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Zhang H, Li X, Zhang N, Li D, Cheng J, Yang J, Deng P, Yin Y, Zhou W, Tang D. Enhanced Hydrogen-Ion Storage Performance of Molybdenum Trioxide Nanoribbons Doped by Oxygen Vacancies. ACS APPLIED MATERIALS & INTERFACES 2025; 17:25684-25692. [PMID: 40238347 DOI: 10.1021/acsami.5c01903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2025]
Abstract
Hydrogen ion has been extensively studied as a charge carrier in electrochemical energy storage devices due to its minimal ionic radius and abundant reserves. Among various candidate materials, molybdenum trioxide (MoO3) stands out as a promising electrode material owing to its excellent chemical stability and ultrahigh theoretical storage capacity. However, its practical application is hindered by a narrow potential window as a hydrogen-ion electrode and a low operating voltage caused by aqueous electrolyte decomposition. In this study, MoO3 nanoribbons with significant number of oxygen vacancies were synthesized via a simple hydrothermal method, which exhibit notable backward shift in the hydrogen evolution potential, three-proton intercalation/deintercalation process, and then a very noticeable enhancement in hydrogen-ion storage capacity during electrochemical testing in the aqueous electrolyte. It was also found that tungsten(W) doping in a specific amount can enrich the oxygen vacancies in MoO3 nanoribbons and then further enhance their hydrogen-ion storage performance. Remarkably, the W-doped MoO3 nanoribbons with a nominal molar ratio of 3% demonstrate an exceptional specific capacity of 390.8 mA h/g at a current density of 100 C (40 A/g). This study might highlight the significant impact of oxygen vacancy and tungsten(W) doping on the microstructures and electrochemical properties of MoO3 nanoribbons and provide valuable insights for the design and development of high-performance electrode materials for hydrogen-ion batteries.
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Affiliation(s)
- Hanyang Zhang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Xianhui Li
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Nenghui Zhang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Dong Li
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Jiaxin Cheng
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Jia Yang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Pufan Deng
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Yanling Yin
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Weichang Zhou
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
| | - Dongsheng Tang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, P. R. China
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Zhou X, Wang T, Liu Q, Zhang Y, Deng J, Lei Z. Structural water and composing with graphene synergistically boosting electrochemical lithium-storage performance of hydrated tungsten oxides. J Colloid Interface Sci 2025; 682:298-310. [PMID: 39626574 DOI: 10.1016/j.jcis.2024.11.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2024] [Revised: 11/19/2024] [Accepted: 11/27/2024] [Indexed: 01/15/2025]
Abstract
Transition metal oxide materials have received widespread attention as high-performance anode materials for lithium-ion batteries. However, serious issues including poor electrical conductivity, significant volume change, and low cycling stability limit their wide implementation. Herein, both bare hydrated tungsten oxides (WO3·nH2O, n = 0, 0.33 and 1) and their composites with reduced graphene oxide (rGO) were successfully synthesized by regulating solvent ratio through a facile one-step solvothermal method using tungsten chloride and graphene oxide (GO) as raw materials. The phase components, microstructures, interface interaction effects, electrochemical properties and reaction mechanism and kinetics were investigated in detail by both physical and electrochemical characterizations and theoretical calculations. It was demonstrated that, moderate amount of structural water molecule in WO3·nH2O can greatly boost lithium-ion migration and provide additional active sites for lithium storage. Attributed to the synergistic effect of moderate structural water, conductive rGO and its strong electrostatic interactions with WO3·0.33H2O, the as-synthesized WO3·0.33H2O/rGO composite delivered superior electrochemical performance for lithium storage, including an ultrahigh reversible capacity of 916.4 mAh/g at 200 mA g-1 and extraordinary capacity retention of 82 % after 200 cycles (750.2 mAh/g), showing promising alternative anode material for LIBs. These findings provide a novel strategy to improve electrochemical performance of electrode materials for reversible batteries.
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Affiliation(s)
- Xiaozhong Zhou
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China.
| | - Tianxiang Wang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Qiang Liu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Yan Zhang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Jiangwei Deng
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Ziqiang Lei
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
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Talin AA, Meyer J, Li J, Huang M, Schwacke M, Chung HW, Xu L, Fuller EJ, Li Y, Yildiz B. Electrochemical Random-Access Memory: Progress, Perspectives, and Opportunities. Chem Rev 2025; 125:1962-2008. [PMID: 39960411 DOI: 10.1021/acs.chemrev.4c00512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2025]
Abstract
Non-von Neumann computing using neuromorphic systems based on analogue synaptic and neuronal elements has emerged as a potential solution to tackle the growing need for more efficient data processing, but progress toward practical systems has been stymied due to a lack of materials and devices with the appropriate attributes. Recently, solid state electrochemical ion-insertion, also known as electrochemical random access memory (ECRAM) has emerged as a promising approach to realize the needed device characteristics. ECRAM is a three terminal device that operates by tuning electronic conductance in functional materials through solid-state electrochemical redox reactions. This mechanism can be considered as a gate-controlled bulk modulation of dopants and/or phases in the channel. Early work demonstrating that ECRAM can achieve nearly ideal analogue synaptic characteristics has sparked tremendous interest in this approach. More recently, the realization that electrochemical ion insertion can be used to tune the electronic properties of many types of materials including transition metal oxides, layered two-dimensional materials, organic and coordination polymers, and that the changes in conductance can span orders of magnitude has further attracted interest in ECRAM as the basis for analogue synaptic elements for inference accelerators as well as for dynamical devices that can emulate a wide range of neuronal characteristics for implementation in analogue spiking neural networks. At its core, ECRAM shares many fundamental aspects with rechargeable batteries, where ion insertion materials are used extensively for their ability to reversibly store charge and energy. Computing applications, however, present drastically different requirements: systems will require many millions of devices, scaled down to tens of nanometers, all while achieving reliable electronic-state tuning at scaled-up rates and endurances, and with minimal energy dissipation and noise. In this review, we discuss the history, basic concepts, recent progress, as well as the challenges and opportunities for different types of ECRAM, broadly grouped by their primary mobile ionic charge carrier, including Li, protons, and oxygen vacancies.
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Affiliation(s)
- A Alec Talin
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Jordan Meyer
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jingxian Li
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mantao Huang
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Miranda Schwacke
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Heejung W Chung
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Longlong Xu
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Elliot J Fuller
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Yiyang Li
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Bilge Yildiz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Suchea MP, Tudose IV, Romanitan C, Pachiu C, Popescu M, Mouratis K, Manica M, Antohe S, Couris S, Zisopol DG, Ionescu ON, Koudoumas E. Study of evolution for 3D structured surface with nano-balls and walls-like features with thickness variation for WO 3 thin films made by spray deposition. Sci Rep 2025; 15:4275. [PMID: 39905144 PMCID: PMC11794606 DOI: 10.1038/s41598-025-88121-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2024] [Accepted: 01/24/2025] [Indexed: 02/06/2025] Open
Abstract
The present work regards a unique yet study of 3D structured surface evolution of nano-balls and walls-like features with thickness variation, for tungsten oxide (WO3) thin films made by spray deposition. Since in most optoelectronic applications the surface morphology and structure play a crucial role and WO3 is one of the most studied and used metal oxide semiconductors in a significant variety of optoelectronic applications, a detailed study of recently observed and reported unique 3D complex architecture of WO3 coatings fabricated by spray pyrolysis (starting from different precursors) is of great importance for further development of thin film coatings and devices. In this scope, two different series of WO3 of 11 samples with different thicknesses each, starting from two tungsten peroxide precursor concentrations (0.05 M and 0.1 M) were fabricated by spray pyrolysis and thoroughly characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction and Raman spectroscopy. Results suggest that, for the mentioned concentrations, the main structural differences affect mostly the surface morphology and slightly the surface texturing. These observations prove the reliability of fabrication of coatings with such surface morphology by spray pyrolysis method and open new perspectives for better sensors, electrochromic or photochromic devices, and more.
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Affiliation(s)
- Mirela Petruta Suchea
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania.
- Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece.
| | - Ioan Valentin Tudose
- Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece
- Chemistry Department, University of Crete, Heraklion, Greece
| | - Cosmin Romanitan
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania
| | - Cristina Pachiu
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania
| | - Marian Popescu
- Ronexprim SRL, 5 Cotiturii Street, Bucharest, 010885, Romania
| | - Kyriakos Mouratis
- Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece
- Department of Electrical and Computer Engineering, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece
| | - Marina Manica
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania
- R&D Center for Materials and Electronic & Optoelectronic Devices (MDEO), Faculty of Physics, University of Bucharest, Atomiștilor Street 405, Măgurele, Ilfov, 077125, Romania
| | - Stefan Antohe
- R&D Center for Materials and Electronic & Optoelectronic Devices (MDEO), Faculty of Physics, University of Bucharest, Atomiștilor Street 405, Măgurele, Ilfov, 077125, Romania
- Academy of Romanian Scientists (AOSR), Ilfov Street 3, Bucharest, 050045, Romania
| | - Stelios Couris
- Physics Department, University of Patras, Patras, 26504, Greece
| | - Dragos Gabriel Zisopol
- Mechanical Engineering Department, Petroleum-Gas University of Ploiesti, Ploiesti, 100680, Romania
- Technical Sciences Academy of Romania (ASTR), Dacia Boulevard 26, Bucharest, 030167, Romania
| | - Octavian Narcis Ionescu
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania.
- Automation, Computers and Electronics Department, Petroleum-Gas University of Ploiesti, Ploiesti, 100680, Romania.
| | - Emmanuel Koudoumas
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A, Erou Iancu Nicolae Street, Voluntari-Bucharest, Voluntari, 077190, Romania.
- Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece.
- Department of Electrical and Computer Engineering, School of Engineering, Hellenic Mediterranean University, Heraklion, Crete, 71410, Greece.
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Kedara Shivasharma T, Mendhe AC, Sahu R, Sankapal BR. "Unveiling marigold assembled micro flowers of tungsten oxide towards solid-state flexible pouch and coin cell supercapacitors". J Colloid Interface Sci 2024; 676:739-754. [PMID: 39059280 DOI: 10.1016/j.jcis.2024.07.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/18/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024]
Abstract
Marigold analogues micro flowers of tungsten oxide (WO3) have been grown in thin film form through simple and cost-effective solution chemistry approach on stainless steel substrate. Aqueous precursor involving WO4-2 ions agglomerated as self-sacrificing template growing initially into the nano-petal, followed by self-assembly; leading to marigold analogues micro flower surface architecture. This enthralling morphology motivated us not only to fabricate supercapacitive electrode but also to design complete solid-state supercapacitor devices in dual configurations: flexible pouch cell and coin cell. Interestingly, both devices even in symmetric configuration yields remarkable potential window of 1.82 V when sandwiched by gel inclusive of Li+ ions dispersed in non-conducting polyvinyl alcohol matrix. Solid-state flexible pouch cell and coin cell delivered specific capacitances of 103.98 ± 3.59 and 30.09 ± 1.03 F/g respectively at a scan rate of 5 mV/s. Assembled electrode, coin-cell and flexible pouch-cells have been well assessed in-depth through specific capacitances using cyclic voltammetry and galvanostatic charge discharge, diffusive and capacitive contributions, mechanical bending tests, electrochemical active surface area, and electrochemical impedance analysis. Practical applicability has been demonstrated for designed flexible pouch cell to run small fan and light emitting diode panel whereas coin cell to run light emitting diode panel.
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Affiliation(s)
- T Kedara Shivasharma
- Nano Materials and Device Laboratory, Department of Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur 440 010, M.S., India
| | - Avinash C Mendhe
- Department of Electronics Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, Yongin, Republic of Korea
| | - Rajulal Sahu
- Nano Materials and Device Laboratory, Department of Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur 440 010, M.S., India
| | - Babasaheb R Sankapal
- Nano Materials and Device Laboratory, Department of Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur 440 010, M.S., India.
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6
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Zhang Y, Ding Y, Lan F, Zhang W, Li J, Zhang R. Recent advances in tungsten oxide-based chromogenic materials: photochromism, electrochromism, and gasochromism. NANOSCALE 2024; 16:21279-21293. [PMID: 39480657 DOI: 10.1039/d4nr03781b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2024]
Abstract
As n-type and wide-bandgap semiconductor materials which are widely found in nature, tungsten oxides (WOx) have attracted extensive attention because of their rich phase structures and unique sub-stoichiometric properties. Tungsten oxides have a good chromogenic response to optical, electrical, and gaseous stimuli, in which their phase changes with the change of temperature and ionic embeddedness, accompanied by significant changes in their optical properties. In addition, due to the presence of oxygen defects, the conductivity and adsorption capacity of tungsten oxides for surface substances are enhanced. These properties endow tungsten oxides with promising application potential in the optical and electronic device areas. This paper reviews the structural and optoelectrical properties of tungsten oxide-based chromogenic materials. Then we focus on the working mechanisms, performance indexes, and preparation methods of tungsten oxides in the field of intelligent chromogenic technology, including photochromism, electrochromism, and gasochromism of tungsten oxide-based chromogenic materials. Finally, a conclusion and outlook are provided, which may help to further advance the application of tungsten oxides in the field of smart chromogenic changes.
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Affiliation(s)
- Yaqi Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
- Jiangsu Key Laboratory of New Energy Devices & Interface Science, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Yilin Ding
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Fan Lan
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Wenjing Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Jingfa Li
- Jiangsu Key Laboratory of New Energy Devices & Interface Science, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Rufan Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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7
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Jeevarathinam A, Annamalai A, Ravichandran R, Annamalai K, Elumalai S. Optimizing synergistic effects: creating oxygen vacancies in NiCoWO 4via a solid-state grinding method for improved energy storage performance. Dalton Trans 2024; 53:17948-17962. [PMID: 39432243 DOI: 10.1039/d4dt02118e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2024]
Abstract
To address the escalating demand for electrical energy, developing high-performance electrochemical energy storage materials is crucial. Metal oxides represent promising materials for high-energy-density supercapacitors. Among these materials, transition metal-based tungstates exhibit significantly enhanced electrical conductivity compared to pure oxides. However, their low inherent conductivity, restricted electrochemically active sites, significant volume expansion, lower capacity, and deprived cycling stability undermine their electrochemical properties. Herein, we synthesised an oxygen vacancy-enriched NiCoWO4 electrode by a simple solid-state, solvent-free grinding process using NaBH4. The Ov-NiCoWO4 electrode displays an impressive capacitance of 703.66 F g-1 at 1 A g-1 and exceptional cycling stability with 87% retention over 2000 cycles at 7 A g-1. This excellent performance is attributed to the oxygen vacancy in the Ov-NiCoWO4 material, which increases the electron carrier density, accelerates electron transportation, enhances the active surface area, and boosts the redox reactivity of the material. In the as-prepared real-life supercapacitor configuration of Ov-NiCoWO4//AC, a determined capacitance of 129.10 F g-1 at 1 A g-1 is achieved. Additionally, it exhibits an energy density of 37.699 W h kg-1 with a power density of 724.98 W kg-1, signifying exceptional performance. Furthermore, it maintains an impressive cycle life, retaining approximately 88.5% over 1000 cycles.
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Affiliation(s)
- Anandhavalli Jeevarathinam
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| | - Arun Annamalai
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| | - Ramya Ravichandran
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| | - Kumaresan Annamalai
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| | - Sundaravadivel Elumalai
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
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Wang K, Bai B, Luo K, Liu J, Ran F, Li Z, Wang J, Li Z, Gao F, Sun W. Stability of Multivalent Ruthenium on CoWO 4 Nanosheets for Improved Electrochemical Water Splitting with Alkaline Electrolyte. CHEMSUSCHEM 2024; 17:e202301952. [PMID: 38380968 DOI: 10.1002/cssc.202301952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 02/22/2024]
Abstract
Engineering low-cost electrocatalysts with desired features is vital to decrease the energy consumption but challenging for superior water splitting. Herein, we development a facile strategy by the addition of multivalence ruthenium (Ru) into the CoWO4/CC system. During the synthesis process, the most of Ru3+ ions were insinuated into the lattice of CoWO4, while the residual Ru3+ ions were reduced to metallic Ru and further attached to the interface between carbon cloth and CoWO4 sheets. The optimal Ru2(M)-CoWO4/CC exhibited superior performance for the HER with an overpotential of 85 mV@10 mA cm-2, which was much better than most of reported electrocatalysts, regarding OER, a low overpotential of 240 mV@10 mA cm-2 was sufficient. In comparison to Ru2(0)-CoWO4/CC with the same Ru mass loading, multivalence Ru2(M)-CoWO4/CC required a lower overpotential for OER and HER, respectively. The Ru2(M)-CoWO4/CC couple showed excellent overall water splitting performance at a cell voltage of 1.48 V@10 mA cm-2 for used as both anodic and cathodic electrocatalysts. Results of the study showed that the electrocatalytic activity of Ru2(M)-CoWO4/CC was attributed to the in-situ transformation of Ru/Co sites, the multivalent Ru ions and the synergistic effect of different metal species stimulated the intrinsic activity of CoWO4/CC.
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Affiliation(s)
- Kai Wang
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Bowen Bai
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Kun Luo
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Jifei Liu
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Feitian Ran
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Zhuoqun Li
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Jing Wang
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Zengpeng Li
- Key Laboratory of Solar Power System Engineering, Jiuquan Vocational and Technical College, Jiuquan, 735000, China
| | - Fengyang Gao
- School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Wanjun Sun
- School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
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9
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Rho YJ, Lee C, Kim M, Ryu WH. Symmetric Catalyst Design Employing Ir Nanoparticles on Black WO 3- x Nanofiber Support for Boosting Water Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401858. [PMID: 38693069 DOI: 10.1002/smll.202401858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/12/2024] [Indexed: 05/03/2024]
Abstract
The efficient evolution of gaseous hydrogen and oxygen from water is required to realize sustainable energy conversion systems. To address the sluggish kinetics of the multielectron transfer reaction, bifunctional catalyst materials for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) should be developed. Herein, a tailored combination of atomically minimized iridium catalysts and highly conductive black WO3- x nanofiber supports are developed for the bifunctional electrolyzer system. Atomic Ir catalysts, particularly those that activate the OER, minimize the utilization of precious metals. The oxygen-deficient black WO3- x NF support, which boosts the HER, offers increased electronic conductivity and favorable nucleation sites for Ir loading. The Ir-black WO3- x NFs exhibit increased double-layer capacitance, a significantly reduced onset potential, lower Tafel slope, and stable cyclability for both the OER and HER, compared to large-sized Ir catalysts loaded on white WO3 nanofibers. This study offers a strategy for developing an optimal catalyst material with suitable supports for high-performance and economical water electrolysis systems for achieving carbon-negative targets.
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Affiliation(s)
- Yeo-Jin Rho
- Department of Chemical and Biological Engineering, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, 04310, Republic of Korea
| | - Changsoo Lee
- Hydrogen Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea
| | - MinJoong Kim
- Hydrogen Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea
| | - Won-Hee Ryu
- Department of Chemical and Biological Engineering, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, 04310, Republic of Korea
- Institute of Advanced Materials and Systems, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, 04310, Republic of Korea
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Rocca T, Gurel A, Schaming D, Limoges B, Balland V. Multivalent-Ion versus Proton Insertion into Nanostructured Electrochromic WO 3 from Mild Aqueous Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38656169 DOI: 10.1021/acsami.4c02152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Mild aqueous electrolytes containing multivalent metal salts are currently scrutinized for the development of ecosustainable energy-related devices. However, the role of soluble multivalent metal ions in the electrochemical reactivity of transition metal oxides is a matter of debate, especially when they are performed in protic aqueous electrolytes. Here, we have compared, by means of (spectro)electrochemistry, the reversible electrochromic reduction of transparent nanostructured γ-WO3 thin films in mild aqueous electrolytes of various chemical composition and pH. This study reveals that reversible proton insertion is the only charge storage mechanism over a large pH range and that it is effective for aqueous electrolytes prepared from either organic (such as acetic acid) or inorganic (such as solvated multivalent cations) Bro̷nsted acids. By refuting charge storage mechanisms relying on the reversible insertion of multivalent metal ions, notably in aqueous electrolytes based on Al3+ ions or a mixture of Al3+ and Zn2+ ions, these fundamental results pave the way for the rational development of electrolytes and active materials for a range of aqueous-based devices, such as the emerging concept of an energy-saving smart window, which we also address in this study.
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Affiliation(s)
- Tom Rocca
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013, Paris 75006 CEDEX 05, France
| | - Ari Gurel
- Université Paris Cité, CNRS, ITODYS, F-75013, Paris 75006 CEDEX 05, France
| | - Delphine Schaming
- Université Paris Cité, CNRS, ITODYS, F-75013, Paris 75006 CEDEX 05, France
| | - Benoît Limoges
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013, Paris 75006 CEDEX 05, France
| | - Véronique Balland
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013, Paris 75006 CEDEX 05, France
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11
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Alonzo SMM, Bentley J, Desai S, Bastakoti BP. Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application. Sci Rep 2023; 13:21732. [PMID: 38066064 PMCID: PMC10709354 DOI: 10.1038/s41598-023-48958-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 12/01/2023] [Indexed: 04/28/2025] Open
Abstract
A hierarchical nanocomposite of carbon microspheres decorated with tungsten oxide (WO3) nanocrystals resulted from the hydrothermal treatment of a precursor solution containing glucose and tungstic acid. The dehydration of glucose molecules formed oligosaccharides, which consequently carbonized, turning into carbon microspheres. The carbon microspheres then acted as a spherical nucleus onto which WO3 nanocrystals grew via heterogeneous nucleation. The reaction product showed a phase junction of orthorhombic and monoclinic WO3, which transitioned to mix-phase of tetragonal and monoclinic WO3 after a subsequent heat treatment at 600 °C in an inert condition. The electrochemical tests showed that incorporating WO3 onto the carbon (WO3/C) resulted in a three-fold increase in the specific capacitance compared to WO3 alone and a high coulombic and energy efficiencies of 98.2% and 92.8%, respectively. The nanocomposite exhibited supercapacitance with both Faradaic and non-Faradaic charge storage mechanisms. Electrochemical impedance spectroscopy showed a lower charge transfer resistance for the composite at Rct = 11.7Ω.
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Affiliation(s)
- Shanna Marie M Alonzo
- Department of Chemistry, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA
| | - John Bentley
- Department of Chemistry, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA
| | - Salil Desai
- Department of Industrial and System Engineering, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA
| | - Bishnu Prasad Bastakoti
- Department of Chemistry, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA.
- Center of Excellence in Product Design and Advanced Manufacturing, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC, 27411, USA.
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12
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Joel C, Biju Bennie R, Jerold Antony A, Vimala Vanthana Abi S. Role of Deep Eutectic Solvent in the surface modification of Yttria based WO3 nanocomposite for application in Nanoarchitectonics. CERAMICS INTERNATIONAL 2023; 49:36189-36198. [DOI: 10.1016/j.ceramint.2023.08.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2025]
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13
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Koiki BA, Arotiba OA. Peroxydisulphate activated FTO-WO 3 nanorods based photoelectrocatalytic degradation of tetracycline: Intermediate products, degradation pathway and ecotoxicity studies. Heliyon 2023; 9:e20882. [PMID: 37876427 PMCID: PMC10590805 DOI: 10.1016/j.heliyon.2023.e20882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/11/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023] Open
Abstract
This work reports sulphate radical assisted photoelectrocatalytic (SR-PEC) degradation of tetracycline using a visible light active fluorine-doped tin oxide - tungsten trioxide nanorods (FTO-WO3 NRs) photoanode. The WO3 NRs were synthesised via the hydrothermal method and then conducted on the FTO glass to form a photoanode. When the photoanode was applied without sulphate radicals for PEC degradation, 10 % of the tetracycline was degraded. Conversely, when 3 mM persulphate was added, the extent of tetracycline degraded was 88 % using the UV-vis spectrophotometer and 99 % using the ultra-performance liquid chromatography mass spectrometer (UPLC-MS) within 90 min at 1.5 V. The mechanism of tetracycline degradation was proposed based on the intermediate products identified using UPLC-MS and the extent of toxicity was evaluated using quantitative structure activity relationship (QSAR) analysis. Trapping experiment revealed that the photogenerated holes, sulphate radicals, and hydroxyl radicals were the oxidants that significantly took part in the degradation of tetracycline. Overall, the electrode was stable and reusable, therefore suggesting the suitability of FTO-WO3 NRs photoanode in the presence of sulphate radicals towards the decontamination of water laden with pharmaceutical pollutants.
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Affiliation(s)
- Babatunde A. Koiki
- Department of Chemical Sciences, University of Johannesburg, South Africa
| | - Omotayo A. Arotiba
- Department of Chemical Sciences, University of Johannesburg, South Africa
- Centre for Nanomaterials Science Research, University of Johannesburg, South Africa
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14
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Lovisa LX, Dos Santos DF, Santiago AAG, Teodoro MD, Bomio MRD, Motta FV. Synthesis of Pr 3+-doped WO 3 particles: correlation between photoluminescent and photocatalytic properties. RSC Adv 2023; 13:25738-25751. [PMID: 37649661 PMCID: PMC10463239 DOI: 10.1039/d3ra05136f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/23/2023] [Indexed: 09/01/2023] Open
Abstract
The WO3 and WO3:Pr3+ particles were successfully synthesized by the co-precipitation method. The XRD analysis with Rietveld refinement revealed the formation of a monoclinic phase for WO3 and for doped samples, this result was later confirmed by Raman spectroscopy studies. The presence of Pr3+ in the WO3 crystalline lattice induced structural and optical changes in the particles, increasing the crystallite size, distorting the clusters (shortening of the W-O bonds), favoring the crystallinity and changing the optical gap. The predominant morphology of the particles of WO3 and WO3:Pr3+ obtained was nanocubes constituted by the superposition of plates of nanometric thicknesses. The photoluminescence of WO3 and WO3:Pr3+ was produced by the existence of surface defects in the particles. The increase in the concentration of Pr3+ promoted an increase in the intensity of PL, due to the increase in the rate of recombination of electron/hole charges. The WO3 sample exhibited emission in the white region due to the adjustment of simultaneous electronic transitions in the blue, green and red regions, characteristic of the broadband spectrum. The interval of the 2.65 eV gap band and the high efficiency in the separation of the photogenerated charges (e-/h+) with the low recombination rate contributed to the photocatalytic degradation of Crystal Violet (CV) by the catalyst. The WO3:4% Pr3+ sample showed the best photocatalytic efficiency, degrading 73% of the CV dye in 80 minutes. This result was associated with a reduction in particle size and density of oxygen vacancies on the material surface.
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Affiliation(s)
- L X Lovisa
- Special Coordination of Materials Engineering, Federal University of Santa Catarina Blumenau Santa Catarina Brazil
| | - D F Dos Santos
- Department of Materials Engineering, LSQM - Laboratory of Chemical Synthesis of Materials, Federal University of Rio Grande do Norte P. O. Box 1524 59078-900 Natal RN Brazil
| | - A A G Santiago
- Department of Materials Engineering, LSQM - Laboratory of Chemical Synthesis of Materials, Federal University of Rio Grande do Norte P. O. Box 1524 59078-900 Natal RN Brazil
| | - M D Teodoro
- Department of Physics, Federal University of São Carlos São Carlos São Paulo 13565-905 Brazil
| | - M R D Bomio
- Department of Materials Engineering, LSQM - Laboratory of Chemical Synthesis of Materials, Federal University of Rio Grande do Norte P. O. Box 1524 59078-900 Natal RN Brazil
| | - F V Motta
- Department of Materials Engineering, LSQM - Laboratory of Chemical Synthesis of Materials, Federal University of Rio Grande do Norte P. O. Box 1524 59078-900 Natal RN Brazil
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Mineo G, Bruno E, Mirabella S. Advances in WO 3-Based Supercapacitors: State-of-the-Art Research and Future Perspectives. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13081418. [PMID: 37111003 PMCID: PMC10142086 DOI: 10.3390/nano13081418] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 06/01/2023]
Abstract
Electrochemical energy storage devices are one of the main protagonists in the ongoing technological advances in the energy field, whereby the development of efficient, sustainable, and durable storage systems aroused a great interest in the scientific community. Batteries, electrical double layer capacitors (EDLC), and pseudocapacitors are characterized in depth in the literature as the most powerful energy storage devices for practical applications. Pseudocapacitors bridge the gap between batteries and EDLCs, thus supplying both high energy and power densities, and transition metal oxide (TMO)-based nanostructures are used for their realization. Among them, WO3 nanostructures inspired the scientific community, thanks to WO3's excellent electrochemical stability, low cost, and abundance in nature. This review analyzes the morphological and electrochemical properties of WO3 nanostructures and their most used synthesis techniques. Moreover, a brief description of the electrochemical characterization methods of electrodes for energy storage, such as Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS) are reported, to better understand the recent advances in WO3-based nanostructures, such as pore WO3 nanostructures, WO3/carbon nanocomposites, and metal-doped WO3 nanostructure-based electrodes for pseudocapacitor applications. This analysis is reported in terms of specific capacitance calculated as a function of current density and scan rate. Then we move to the recent progress made for the design and fabrication of WO3-based symmetric and asymmetric supercapacitors (SSCs and ASCs), thus studying a comparative Ragone plot of the state-of-the-art research.
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Affiliation(s)
- Giacometta Mineo
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università degli Studi di Catania, via S. Sofia 64, 95123 Catania, Italy; (G.M.); (E.B.)
- CNR-IMM, Università di Catania, via S. Sofia 64, 95123 Catania, Italy
| | - Elena Bruno
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università degli Studi di Catania, via S. Sofia 64, 95123 Catania, Italy; (G.M.); (E.B.)
- CNR-IMM, Università di Catania, via S. Sofia 64, 95123 Catania, Italy
| | - Salvo Mirabella
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università degli Studi di Catania, via S. Sofia 64, 95123 Catania, Italy; (G.M.); (E.B.)
- CNR-IMM, Università di Catania, via S. Sofia 64, 95123 Catania, Italy
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16
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Wang S, Wang M, Zhang Y, Wang H, Fei H, Liu R, Kong H, Gao R, Zhao S, Liu T, Wang Y, Ni M, Ciucci F, Wang J. Metal Oxide-Supported Metal Catalysts for Electrocatalytic Oxygen Reduction Reaction: Characterization Methods, Modulation Strategies, and Recent Progress. SMALL METHODS 2023:e2201714. [PMID: 37029582 DOI: 10.1002/smtd.202201714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/25/2023] [Indexed: 06/19/2023]
Abstract
The sluggish kinetics of the oxygen reduction reaction (ORR) with complex multielectron transfer steps significantly limits the large-scale application of electrochemical energy devices, including metal-air batteries and fuel cells. Recent years witnessed the development of metal oxide-supported metal catalysts (MOSMCs), covering single atoms, clusters, and nanoparticles. As alternatives to conventional carbon-dispersed metal catalysts, MOSMCs are gaining increasing interest due to their unique electronic configuration and potentially high corrosion resistance. By engineering the metal oxide substrate, supported metal, and their interactions, MOSMCs can be facilely modulated. Significant progress has been made in advancing MOSMCs for ORR, and their further development warrants advanced characterization methods to better understand MOSMCs and precise modulation strategies to boost their functionalities. In this regard, a comprehensive review of MOSMCs for ORR is still lacking despite this fast-developing field. To eliminate this gap, advanced characterization methods are introduced for clarifying MOSMCs experimentally and theoretically, discuss critical methods of boosting their intrinsic activities and number of active sites, and systematically overview the status of MOSMCs based on different metal oxide substrates for ORR. By conveying methods, research status, critical challenges, and perspectives, this review will rationally promote the design of MOSMCs for electrochemical energy devices.
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Affiliation(s)
- Siyuan Wang
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Miao Wang
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Yunze Zhang
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Hongsheng Wang
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Hao Fei
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Ruoqi Liu
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Hui Kong
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Ruijie Gao
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Siyuan Zhao
- Department of Building and Real Estate, Research Institute for Sustainable Urban Development (RISUD) & Research Institute for Smart Energy (RISE), The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Tong Liu
- Department of Building and Real Estate, Research Institute for Sustainable Urban Development (RISUD) & Research Institute for Smart Energy (RISE), The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Yuhao Wang
- Department of Mechanical and Aerospace Engineering, HKUST, New Territories, Hong Kong SAR, 999077, P. R. China
| | - Meng Ni
- Department of Building and Real Estate, Research Institute for Sustainable Urban Development (RISUD) & Research Institute for Smart Energy (RISE), The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Francesco Ciucci
- Department of Mechanical and Aerospace Engineering, HKUST, New Territories, Hong Kong SAR, 999077, P. R. China
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Futian, Shenzhen, 518048, P. R. China
| | - Jian Wang
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
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17
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Yan T, Chen S, Sun W, Liu Y, Pan L, Shi C, Zhang X, Huang ZF, Zou JJ. IrO 2 Nanoparticle-Decorated Ir-Doped W 18O 49 Nanowires with High Mass Specific OER Activity for Proton Exchange Membrane Electrolysis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6912-6922. [PMID: 36718123 DOI: 10.1021/acsami.2c20529] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The oxygen evolution reaction (OER) severely limits the efficiency of proton exchange membrane (PEM) electrolyzers due to slow reaction kinetics. IrO2 is currently a commonly used anode catalyst, but its large-scale application is limited due to its high price and scarce reserves. Herein, we reported a practical strategy to construct an acid OER catalyst where Iridium oxide loading and iridium element bulk doping are realized on the surface and inside of W18O49 nanowires by immersion adsorption, respectively. Specifically, W0.7Ir0.3Oy has an overpotential of 278 mV at 10 mA·cm-2 in 0.1 M HClO4. The mass activity of 714.10 A·gIr-1 at 1.53 V vs. the reversible hydrogen electrode (RHE) is 80 times that of IrO2, and it can run stably for 55 h. In the PEM water electrolyzer device, its mass activity reaches 3563.63 A·gIr-1 at the cell voltage of 2.0 V. This improved catalytic performance is attributed to the following aspects: (1) The electron transport between iridium and tungsten effectively improves the electronic structure of the catalyst; (2) the introduction of iridium into W18O49 by means of elemental bulk doping and nanoparticles supporting for the enhanced conductivity and electrochemically active surface area of the catalyst, resulting in extensive exposure of active sites and increased intrinsic activity; and (3) during the OER process, partial iridium elements in the bulk phase are precipitated, and iridium oxide is formed on the surface to maintain stable activity. This work provides a new idea for designing oxygen evolution catalysts with low iridium content for practical application in PEM electrolyzers.
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Affiliation(s)
- Tianqing Yan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
| | - Shiyi Chen
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
| | - Wendi Sun
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Yuezheng Liu
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Chengxiang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Zhen-Feng Huang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
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Guillén C. Polycrystalline WO 3-x Thin Films Obtained by Reactive DC Sputtering at Room Temperature. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1359. [PMID: 36836989 PMCID: PMC9967610 DOI: 10.3390/ma16041359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Tungsten oxide thin films have applications in various energy-related devices owing to their versatile semiconductor properties, which depend on the oxygen content and crystalline state. The concentration of electrons increases with intrinsic defects such as oxygen vacancies, which create new absorption bands that give rise to colored films. Disorders in the crystal structure produce additional changes in the electrical and optical characteristics. Here, WO3-x thin films are prepared on unheated glass substrates by reactive DC sputtering from a pure metal target, using the discharge power and the oxygen-to-argon pressure ratio as control parameters. A transition from amorphous to polycrystalline state is obtained by increasing the sputtering power and adjusting the oxygen content. The surface roughness is higher and the bandgap energy is lower for polycrystalline layers than for amorphous ones. Moreover, the electrical conductivity and sub-bandgap absorption increase as the oxygen content decreases.
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Affiliation(s)
- Cecilia Guillén
- Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain
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19
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Chen X, van Huis MA. Formation Pathways of Lath-Shaped WO 3 Nanosheets and Elemental W Nanoparticles from Heating of WO 3 Nanocrystals Studied via In Situ TEM. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1291. [PMID: 36770297 PMCID: PMC9920553 DOI: 10.3390/ma16031291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
WO3 is a versatile material occurring in many polymorphs, and is used in nanostructured form in many applications, including photocatalysis, gas sensing, and energy storage. We investigated the thermal evolution of cubic-phase nanocrystals with a size range of 5-25 nm by means of in situ heating in the transmission electron microscope (TEM), and found distinct pathways for the formation of either 2D WO3 nanosheets or elemental W nanoparticles, depending on the initial concentration of deposited WO3 nanoparticles. These pristine particles were stable up to 600 °C, after which coalescence and fusion of the nanocrystals were observed. Typically, the nanocrystals transformed into faceted nanocrystals of elemental body-centered-cubic W after annealing to 900 °C. However, in areas where the concentration of dropcast WO3 nanoparticles was high, at a temperature of 900 °C, considerably larger lath-shaped nanosheets (extending for hundreds of nanometers in length and up to 100 nm in width) were formed that are concluded to be in monoclinic WO3 or WO2.7 phases. These lath-shaped 2D particles, which often curled up from their sides into folded 2D nanosheets, are most likely formed from the smaller nanoparticles through a solid-vapor-solid growth mechanism. The findings of the in situ experiments were confirmed by ex situ experiments performed in a high-vacuum chamber.
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Affiliation(s)
- Xiaodan Chen
- Soft Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Electron Microscopy Center, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Marijn A. van Huis
- Soft Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Electron Microscopy Center, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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20
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Partially carbonized tungsten oxide as electrode material for asymmetric supercapacitors. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05196-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Abebe EM, Ujihara M. Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications. ACS OMEGA 2022; 7:17161-17174. [PMID: 35647438 PMCID: PMC9134227 DOI: 10.1021/acsomega.2c00826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Complex oxides and hydroxides of Ni, Co, and Mn from a precursor mixture were electrochemically deposited on both a cathode and an anode. On the Ni foam cathode, the complex metal hydroxides precipitated as nanolayers at -0.9 V. Simultaneously, the metal ions were oxidized and deposited as blocks on the Ni foam anode. While the concentrations of Ni(NO3)2 and Mn(NO3)2 were constant (80 mM for Ni2+ and 40 mM for Mn2+, respectively), the concentration of Co(NO3)2 was varied from 20 to 120 mM, which affected the morphology and electrochemical properties of the electrode: a Co:Ni:Mn molar ratio resulted in the highest specific capacitance (at a scan rate of 5 mV s-1, 1800 F g-1 for the cathode material and 720 F g-1 for the anode material). This cathode material was assembled into symmetric supercapacitors, which demonstrated an excellent energy density of 39 Wh kg-1 at a power density of 1300 W kg-1 and a high capacitance retention of 90% after 3000 charge/discharge cycles. This high electrochemical performance was attributed to the optimized ratio of metal oxides, and this simple preparation strategy can be applied to other nanocomposites of complex metal oxides/hydroxides with desired characteristics for various applications.
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Xu L, Wang L, Chen H, Wang X, Chen F, Lyu B, Hang W, Zhao W, Yuan J. Effects of pH Values and H2O2 Concentrations on the Chemical Enhanced Shear Dilatancy Polishing of Tungsten. MICROMACHINES 2022; 13:mi13050762. [PMID: 35630229 PMCID: PMC9146294 DOI: 10.3390/mi13050762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 11/25/2022]
Abstract
In order to obtain tungsten with great surface qualities and high polishing efficiency, a novel method of chemical enhanced shear dilatancy polishing (C-SDP) was proposed. The effects of pH values and H2O2 concentrations on the polishing performance of tungsten C-SDP were studied. In addition, the corrosion behaviors of tungsten in solutions with different pH values and H2O2 concentrations were analyzed by electrochemical experiments, and the valence states of elements on the tungsten surface were analyzed by XPS. The results showed that both pH values and H2O2 concentrations had significant effects on tungsten C-SDP. With the pH values increasing from 7 to 12, the MRR increased from 6.69 µm/h to 13.67 µm/h. The optimal surface quality was obtained at pH = 9, the surface roughness (Ra) reached 2.35 nm, and the corresponding MRR was 9.71 µm/h. The MRR increased from 9.71 µm/h to 34.95 µm/h with the H2O2 concentrations increasing from 0 to 2 vol.%. When the concentration of H2O2 was 1 vol.%, the Ra of tungsten reached the lowest value, which was 1.87 nm, and the MRR was 26.46 µm/h. This reveals that C-SDP technology is a novel ultra-precision machining method that can achieve great surface qualities and polishing efficiency of tungsten.
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Affiliation(s)
- Liang Xu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
| | - Lin Wang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
| | - Hongyu Chen
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
- Correspondence:
| | - Xu Wang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Fangyuan Chen
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
| | - Binghai Lyu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Wei Hang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Wenhong Zhao
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
| | - Julong Yuan
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; (L.X.); (L.W.); (X.W.); (F.C.); (B.L.); (W.H.); (W.Z.); (J.Y.)
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
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Epifani M. Mechanistic Insights into WO 3 Sensing and Related Perspectives. SENSORS (BASEL, SWITZERLAND) 2022; 22:2247. [PMID: 35336421 PMCID: PMC8950964 DOI: 10.3390/s22062247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/04/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
Tungsten trioxide (WO3) is taking on an increasing level of importance as an active material for chemoresistive sensors. However, many different issues have to be considered when trying to understand the sensing properties of WO3 in order to rationally design sensing devices. In this review, several key points are critically summarized. After a quick review of the sensing results, showing the most timely trends, the complex system of crystallographic WO3 phase transitions is considered, with reference to the phases possibly involved in gas sensing. Appropriate attention is given to related investigations of first principles, since they have been shown to be a solid support for understanding the physical properties of crucially important systems. Then, the surface properties of WO3 are considered from both an experimental and first principles point of view, with reference to the paramount importance of oxygen vacancies. Finally, the few investigations of the sensing mechanisms of WO3 are discussed, showing a promising convergence between the proposed hypotheses and several experimental and theoretical studies presented in the previous sections.
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Affiliation(s)
- Mauro Epifani
- Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy
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24
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Dhilip Kumar R, Nagarani S, Sethuraman V, Andra S, Dhinakaran V. Investigations of conducting polymers, carbon materials, oxide and sulfide materials for supercapacitor applications: a review. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02124-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Steady-state voltammetric characterization and simulation-aided study of the mass transfer enhancement at conical W/WO2 ultramicroelectrodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Wang L, Li D, Zhou Y, Fu S, Peng Y, Yin Y, Wang W, Zhou W, Tang D. Optimization of hydrogen-ion storage performance of tungsten trioxide nanowires by niobium doping. NANOTECHNOLOGY 2021; 33:105403. [PMID: 34847544 DOI: 10.1088/1361-6528/ac3e8e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/30/2021] [Indexed: 06/13/2023]
Abstract
The transport and storage of ions within solid state structures is a fundamental limitation for fabricate more advanced electrochemical energy storage, memristor, and electrochromic devices. Crystallographic shear structure can be induced in the tungsten bronze structures composed of corner-sharing WO6octahedra by the addition of edge-sharing NbO6octahedra, which might provide more storage sites and more convenient transport channels for external ions such as hydrogen ions and alkali metal ions. Here, we show that Nb2O5·15WO3nanowires (Nb/W = 0.008) with long length-diameter ratio, smooth surface, and uniform diameter have been successfully synthesized by a simple hydrothermal method. The Nb2O5·15WO3nanowires do exhibit more advantages over h-WO3nanowires in electrochemical hydrogen ion storage such as smaller polarization, larger capacity (71 mAh g-1, at 10C, 1C = 100 mA g-1), better cycle performance (remain at 99% of the initial capacity after 200 cycles at 100C) and faster H+ions diffusion kinetics. It might be the crystallographic shear structure induced by Nb doping that does result in the marked improvement in the hydrogen-ion storage performance of WO3. Therefore, complex niobium tungsten oxide nanowires might offer great promise for the next generation of electrochemical energy and information storage devices.
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Affiliation(s)
- Liushun Wang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Dong Li
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Yulan Zhou
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Shaohua Fu
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Yuehua Peng
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Yanling Yin
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Weike Wang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Weichang Zhou
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Dongsheng Tang
- Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
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27
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Migas DB, Filonov AB, Skorodumova NV. Effects of bipolarons on oxidation states, and the electronic and optical properties of W 18O 49. Phys Chem Chem Phys 2021; 23:25824-25829. [PMID: 34762081 DOI: 10.1039/d1cp02634h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
W18O49 has been studied by means of ab initio techniques in the framework of the density functional theory using the onsite Hubbard-U correction applied to the W-d states as well as using the hybrid potential. The existence of bipolarons is found to be an intrinsic feature of this oxide resulting in the presence of different oxidation states of W atoms (W6+ and W5+) and in the co-existence of localized and delocalized electrons. We also discuss possible switching from the W6+ to W5+ and from the W5+ to W4+ oxidation states in the presence of an O vacancy. It appears that O vacancy formation does not cause any additional charge localization at W sites but solely contributes to delocalized electrons. The calculated absorption and reflection coefficients manifest a transparency window in the visible region. At the same time, sizable absorption, occurring due to the presence of free carriers, is detected in the far and mid infrared regions. Additionally, in the near infrared region we confirm and explain an experimentally observed shielding effect originating from transitions involving the localized bipolaronic states.
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Affiliation(s)
- D B Migas
- Belarusian State University of Informatics and Radioelectronics, P. Browki 6, Minsk 220013, Belarus. .,National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe shosse 31, Moscow 115409, Russia
| | - A B Filonov
- Belarusian State University of Informatics and Radioelectronics, P. Browki 6, Minsk 220013, Belarus.
| | - N V Skorodumova
- Multiscale Materials Modelling, Department of Materials and Engineering, Royal Institute of Technology (KTH), Stockholm SE-10044, Sweden.,Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, SE-75121, Sweden
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Boateng E, Thind SS, Chen S, Chen A. Synthesis and electrochemical studies of WO
3
‐based nanomaterials for environmental, energy and gas sensing applications. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Emmanuel Boateng
- Department of Chemistry Electrochemical Technology Centre University of Guelph Guelph Ontario Canada
| | - Sapanbir S. Thind
- Department of Chemistry Lakehead University Thunder Bay Ontario Canada
| | - Shuai Chen
- Department of Chemistry Electrochemical Technology Centre University of Guelph Guelph Ontario Canada
| | - Aicheng Chen
- Department of Chemistry Electrochemical Technology Centre University of Guelph Guelph Ontario Canada
- Department of Chemistry Lakehead University Thunder Bay Ontario Canada
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Kim GY, Yoon KR, Shin K, Jung JW, Henkelman G, Ryu WH. Black Tungsten Oxide Nanofiber as a Robust Support for Metal Catalysts: High Catalyst Loading for Electrochemical Oxygen Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103755. [PMID: 34716657 DOI: 10.1002/smll.202103755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Black valve metal oxides with low oxygen vacancies are identified to be promising for various industrial applications, such as in gas sensing, photocatalysis, and rechargeable batteries, owing to their high reducibility and stability, as well as considerable fractions of low-valent metal species and oxygen vacancies in their lattices. Herein, the nanofiber (NF) of black oxygen-deficient tungsten trioxide (WO3- x ) is presented as a versatile and robust support for the direct growth of a platinum catalyst for oxygen reduction reaction (ORR). The nonstoichiometric, poorly crystallized black WO3- x NFs are prepared by electrospinning the W precursor into NFs followed by their low-temperature (650 °C) reductive calcination. The black WO3- x NFs have adequate electrical conductivity owing to their decreased bandgap and amorphous structure. Remarkably, the oxygen-deficient surface (surface O/W = 2.44) facilitates the growth of small Pt nanoparticles, which resist aggregation, as confirmed by structural characterization and computational analysis. The Pt-loaded black WO3- x NFs outperform the Pt-loaded crystalline white WO3- x NFs in both the electrochemical ORR activity and the accelerated durability test. This study can inspire the use of oxygen-deficient metal oxides as supports for other electrocatalysts, and can further increase the versatility of oxygen-deficient metal oxides.
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Affiliation(s)
- Ga-Yoon Kim
- Department of Chemical and Biological Engineering, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, 04310, Republic of Korea
| | - Ki Ro Yoon
- Advanced Textile R&D Department, Korea Institute of Industrial Technology (KITECH) 143, Hanggaul-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, 15588, Republic of Korea
| | - Kihyun Shin
- Department of Chemistry and the Oden Institute of Computational Engineering and Sciences, University of Texas at Austin, 100 E 24th Street A5300, Austin, TX, 78712, USA
| | - Ji-Won Jung
- School of Materials Science and Engineering, University of Ulsan, 14, Techno saneop-ro 55 beon-gil, Nam-gu, Ulsan, 44776, Republic of Korea
| | - Graeme Henkelman
- Department of Chemistry and the Oden Institute of Computational Engineering and Sciences, University of Texas at Austin, 100 E 24th Street A5300, Austin, TX, 78712, USA
| | - Won-Hee Ryu
- Department of Chemical and Biological Engineering, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, 04310, Republic of Korea
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30
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Dören R, Hartmann J, Leibauer B, Panthöfer M, Mondeshki M, Tremel W. Magneli-type tungsten oxide nanorods as catalysts for the selective oxidation of organic sulfides. Dalton Trans 2021; 50:14027-14037. [PMID: 34546270 DOI: 10.1039/d1dt02243a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective oxidation of thioethers is an important reaction to obtain sulfoxides as synthetic intermediates for applications in the chemical industry, medicinal chemistry and biology or the destruction of warfare agents. The reduced Magneli-type tungsten oxide WO3-x possesses a unique oxidase-like activity which facilitates the oxidation of thioethers to the corresponding sulfoxides. More than 90% of the model system methylphenylsulfide could be converted to the sulfoxide with a selectivity of 98% at room temperature within 30 minutes, whereas oxidation to the corresponding sulfone was on a time scale of days. The concentration of the catalyst had a significant impact on the reaction rate. Reasonable catalytic effects were also observed for the selective oxidation of various organic sulfides with different substituents. The WO3-x nanocatalysts could be recycled at least 5 times without decrease in activity. We propose a metal oxide-catalyzed route based on the clean oxidant hydrogen peroxide. Compared to other molecular or enzyme catalysts the WO3-x system is a more robust redox-nanocatalyst, which is not susceptible to decomposition or denaturation under standard conditions. The unique oxidase-like activity of WO3-x can be used for a wide range of applications in synthetic, environmental or medicinal chemistry.
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Affiliation(s)
- René Dören
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Jens Hartmann
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Benjamin Leibauer
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Martin Panthöfer
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Mihail Mondeshki
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Wolfgang Tremel
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
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Bentley J, Desai S, Bastakoti BP. Porous Tungsten Oxide: Recent Advances in Design, Synthesis, and Applications. Chemistry 2021; 27:9241-9252. [PMID: 33913196 DOI: 10.1002/chem.202100649] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Indexed: 11/10/2022]
Abstract
Tungsten oxide (WO3 ) has received ever more attention and has been highly researched over the last decade due to its being a low-cost transition metal semiconductor with tunable, yet widely stable, band gaps. This minireview briefly highlights the challenges in the design and synthesis of porous WO3 including methods, precursors, solvent effects, crystal phases, and surface activities of the porous WO3 base material. These topics are explored while also drawing a connection of how the morphology and crystal phase affect the band gap. The shifts in band gap not only impact the optical properties of tungsten but also allow tuning to operate on different energy levels, which makes WO3 highly desirable in many applications such as supercapacitors, batteries, solar cells, catalysts, sensors, smart windows, and bioapplications.
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Affiliation(s)
- John Bentley
- Department of Chemistry, North Carolina A&T State University, 1601 E. Market St, Greensboro, NC, 27411, USA
| | - Salil Desai
- Department of Industrial and System Engineering, North Carolina A&T State University, 1601 E. Market St, Greensboro, NC, 27411, USA
| | - Bishnu Prasad Bastakoti
- Department of Chemistry, North Carolina A&T State University, 1601 E. Market St, Greensboro, NC, 27411, USA
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Scarfiello R, Prontera CT, Pugliese M, Bianco GV, Bruno G, Nobile C, Carallo S, Fiore A, Sibillano T, Giannini C, Giannuzzi R, Carbone L, Gigli G, Maiorano V. Electrochromic evaluation of airbrushed water-dispersible W 18O 49nanorods obtained by microwave-assisted synthesis. NANOTECHNOLOGY 2021; 32:215709. [PMID: 33126233 DOI: 10.1088/1361-6528/abc641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
Motivated by the technological relevance of tungsten oxide nanostructures as valuable materials for energy saving technology, electrochemical and electrochromic characteristics of greener processed nanostructured W18O49-based electrodes are discussed in this work. For the purpose, microwave-assisted water-dispersible W18O49nanorods have been synthesized and processed into nanostructured electrodes. An airbrushing technique has been adopted as a cost-effective large-area scalable methodology to deposit the W18O49nanorods onto conductive glass. This approach preserves the morphological and crystallographic habit of native nanorods and allows highly homogeneous transparent coating where good electronic coupling between nanowires is ensured by a mild thermal treatment (250 °C, 30 min). Morphological and structural characteristics of active material were investigated from the synthesis to the nanocrystal deposition process by transmission and scanning electron microscopy, x-ray diffraction, atomic force microscopy and Raman spectroscopy. The as-obtained nanostructured film exhibited good reversible electrochemical features through several intercalation-deintercalation cycles. The electrochromic properties were evaluated on the basis of spectro-electrochemical measurements and showed significant optical contrast in the near-infrared region and high coloration efficiency at 550 nm.
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Affiliation(s)
- Riccardo Scarfiello
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Carmela Tania Prontera
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Marco Pugliese
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Valerio Bianco
- CNR NANOTEC, Institute of Nanotechnology, Dipartimento di Chimica, Università di Bari, via Orabona, 4, 70126 Bari, Italy
| | - Giovanni Bruno
- CNR NANOTEC, Institute of Nanotechnology, Dipartimento di Chimica, Università di Bari, via Orabona, 4, 70126 Bari, Italy
| | - Concetta Nobile
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Sonia Carallo
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | | | - Teresa Sibillano
- IC-CNR, Institute of Crystallography, via Amendola 122/O, I-70126 Bari, Italy
| | - Cinzia Giannini
- IC-CNR, Institute of Crystallography, via Amendola 122/O, I-70126 Bari, Italy
| | - Roberto Giannuzzi
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Luigi Carbone
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Gigli
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
| | - Vincenzo Maiorano
- CNR NANOTEC, Institute of Nanotechnology, c/o Campus Ecotecne, via Monteroni, 73100 Lecce, Italy
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Ahmed R, Nabi G, Khalid NR, Ali F, Tanveer M. Controlled synthesis and enhanced electrochemical performance of tungsten doped NiO nano-sheets for supercapacitors. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01729-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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High-rate quasi-solid-state hybrid supercapacitor of hierarchical flowers of hydrated tungsten oxide nanosheets. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137389] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gupta SP, Nishad HH, Chakane SD, Gosavi SW, Late DJ, Walke PS. Phase transformation in tungsten oxide nanoplates as a function of post-annealing temperature and its electrochemical influence on energy storage. NANOSCALE ADVANCES 2020; 2:4689-4701. [PMID: 36132928 PMCID: PMC9416815 DOI: 10.1039/d0na00423e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/05/2020] [Indexed: 05/27/2023]
Abstract
The morphology and crystal structure of electrode materials have an enormous impact on their electrochemical properties for employment in supercapacitors for various applications. In this study, the transformations of the crystal structure of WO3·H2O nanoplates were conducted by post-annealing at 200 °C and 400 °C. The morphological and structural evolution of the electrodes was studied via FEG-SEM, HRTEM, FTIR, XRD, and Raman spectroscopy. The phase transition and enhanced degree of crystallinity were observed with increasing temperature. The orthorhombic structures of the hydrate WO3·H2O (W80), the mixed-phase with mesoporous structure (W200), and finally the monoclinic phase of WO3 structures (W400) were achieved at annealing temperatures of 80 °C, 200 °C, and 400 °C respectively. The electrochemical performance of electrode W200 showed the highest specific capacitance of 606 F g-1 as compared to electrode W80 (361 F g-1), and was two-fold greater than electrode W400 (302 F g-1) at a current density of 1 A g-1. Moreover, electrode W200 exhibited excellent cyclic stability of 89% at an ultrahigh scan rate of 100 mV s-1 after 4000 cycles. The results highlight that the mixed-phase WO3 nanoplates would make a suitable electrode material for supercapacitors with desired electrochemical features.
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Affiliation(s)
- Shobhnath P Gupta
- National Centre for Nanoscience's and Nanotechnology, University of Mumbai Mumbai-400098 India +91 8380832183
| | - Harishchandra H Nishad
- National Centre for Nanoscience's and Nanotechnology, University of Mumbai Mumbai-400098 India +91 8380832183
| | - Sanjay D Chakane
- Department of Physics, Arts, Science and Commerce College Indapur, Affiliated to Savitribai Phule Pune University Pune-413106 India
| | - Suresh W Gosavi
- Department of Physics, Savitribai Phule Pune University Pune-411007 India
| | - Dattatray J Late
- Centre for Nanoscience and Nanotechnology, Amity University Mumbai-410206 India
| | - Pravin S Walke
- National Centre for Nanoscience's and Nanotechnology, University of Mumbai Mumbai-400098 India +91 8380832183
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Verma S, Sinha-Ray S, Sinha-Ray S. Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review. Polymers (Basel) 2020; 12:polym12010238. [PMID: 31963805 PMCID: PMC7023546 DOI: 10.3390/polym12010238] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 01/19/2023] Open
Abstract
With the per capita growth of energy demand, there is a significant need for alternative and sustainable energy resources. Efficient electrochemical catalysis will play an important role in sustaining that need, and nanomaterials will play a crucial role, owing to their high surface area to volume ratio. Electrospun nanofiber is one of the most promising alternatives for producing such nanostructures. A section of key nano-electrocatalysts comprise of transition metals (TMs) and their derivatives, like oxides, sulfides, phosphides and carbides, etc., as well as their 1D composites with carbonaceous elements, like carbon nanotubes (CNTs) and carbon nanofiber (CNF), to utilize the fruits of TMs’ electronic structure, their inherent catalytic capability and the carbon counterparts’ stability, and electrical conductivity. In this work, we will discuss about such TM derivatives, mostly TM-based ceramics, grown on the CNF substrates via electrospinning. We will discuss about manufacturing methods, and their electrochemical catalysis performances in regards to energy conversion processes, dealing mostly with water splitting, the metal–air battery fuel cell, etc. This review will help to understand the recent evolution, challenges and future scopes related to electrospun transition metal derivative-based CNFs as electrocatalysts.
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Affiliation(s)
- Sahil Verma
- School of Engineering, Indian Institute of Technology Mandi, Mandi HP 175075, India;
| | - Sumit Sinha-Ray
- School of Engineering, Indian Institute of Technology Mandi, Mandi HP 175075, India;
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA
- Correspondence: (S.S.-R.); (S.S.-R.)
| | - Suman Sinha-Ray
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA
- Corporate Innovation Center, United States Gypsum, Libertyville, IL 60048, USA
- Correspondence: (S.S.-R.); (S.S.-R.)
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