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Uddin J, Abdur R, Hossain MR, Aziz S, Jamal MS, Shaikh MAA, Hossain M. Phase tunable nickel doped Mn 3O 4 nanoparticle synthesis by chemical precipitation: kinetic study on dye degradation. NANOSCALE ADVANCES 2024; 6:902-909. [PMID: 38298591 PMCID: PMC10825921 DOI: 10.1039/d3na00754e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/14/2023] [Indexed: 02/02/2024]
Abstract
Nickel (Ni) doped Mn3O4 nanoparticles (NPs) were synthesized by a quick and facile chemical precipitation technique to investigate their performance in the degradation of methylene blue (MB) in the absence of light. XRD, FESEM, TEM, AAS, XPS, and FT-IR were used for the investigation of the structural, surface morphological, and elemental composition of Ni doped Mn3O4 NPs. XRD confirms the formation of a tetragonal phase structure of pure Mn3O4 and 1% and 3% Ni doped Mn3O4 NPs. However, mixed phases were found in the case of 5 to 10% Ni doped Mn3O4 NPs. Well-defined spherical-shaped morphology was presented through FESEM. Particle sizes decreased linearly (58.50 to 23.68 nm) upon increasing the doping concentration from 0% (pure Mn3O4) to 7% respectively, and then increased (48.62 nm) in the case of 10% doping concentration. TEM further confirmed spherical shaped 32 nm nanoparticles for 7% Ni doped Mn3O4. The elemental composition and oxidation state of the prepared NPs were confirmed by using XPS spectra. Mixed valence Mn2+ and Mn4+ states were found in pure Mn3O4 and 1% and 3% Ni doped Mn3O4 NPs in the ratio of 2MnO-MnO2. In addition, three different oxidation states Mn2+, Mn3+, and Mn4+ were found in 5 to 10% Ni doped Mn3O4 NPs. Moreover, as a dopant Ni exists as Ni2+ and Ni3+ states in all Ni doped Mn3O4 NPs. The synthesized NPs were then applied as potent oxidants for the degradation of MB at pH 3. With the increase of doping concentration to 7%, the degree of degradation was increased to 79% in the first 10 min and finally, it became about 98%. The degradation of MB follows the pseudo-first-order linear kinetics with a degradation rate of 0.0342 min-1.
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Affiliation(s)
- Jasim Uddin
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
| | - Rahim Abdur
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
| | - Md Rifat Hossain
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
| | - Shahin Aziz
- BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka 1205 Bangladesh
| | - Mohammad Shah Jamal
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
| | - Md Aftab Ali Shaikh
- Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
- Department of Chemistry, University of Dhaka Dhaka - 1000 Bangladesh
| | - Mosharof Hossain
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR) Dr Qudrat-i-Khuda Road, Dhanmondi Dhaka - 1205 Bangladesh
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Medany SS, Hefnawy MA, Kamal SM. High-performance spinel NiMn 2O 4 supported carbon felt for effective electrochemical conversion of ethylene glycol and hydrogen evolution applications. Sci Rep 2024; 14:471. [PMID: 38172517 PMCID: PMC10764334 DOI: 10.1038/s41598-023-50950-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/28/2023] [Indexed: 01/05/2024] Open
Abstract
One of the most effective electrocatalysts for electrochemical oxidation reactions is NiMn2O4 spinel oxide. Here, a 3-D porous substrate with good conductivity called carbon felt (CF) is utilized. The composite of NiMn2O4-supported carbon felt was prepared using the facile hydrothermal method. The prepared electrode was characterized by various surface and bulk analyses like powder X-ray diffraction, X-ray photon spectroscopy (XPS), Scanning and transmitted electron microscopy, thermal analysis (DTA), energy dispersive X-ray (EDX), and Brunauer-Emmett-Teller (BET). The activity of NiMn2O4 toward the electrochemical conversion of ethylene glycol at a wide range of concentrations was investigated. The electrode showed a current density of 24 mA cm-2 at a potential of 0.5 V (vs. Ag/AgCl). Furthermore, the ability of the electrode toward hydrogen evaluation in an alkaline medium was performed. Thus, the electrode achieved a current density equal 10 mA cm-2 at an overpotential of 210 mV (vs. RHE), and the provided Tafel slope was 98 mV dec-1.
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Affiliation(s)
- Shymaa S Medany
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt.
| | - Mahmoud A Hefnawy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt.
| | - Soha M Kamal
- Applied Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 52511, Egypt
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Shahanas T, Harichandran G. PEG mediated NiMn 2O 4 nanomaterials as a nano catalyst for peroxidase mimetic activity and photocatalytic degradation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123212. [PMID: 37523851 DOI: 10.1016/j.saa.2023.123212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/02/2023]
Abstract
Artificial peroxidases have garnered a lot of attention owing to their tremendous superiority over their natural counterparts. Here, NiMn2O4 nanoparticles have been successfully prepared through PEG assisted hydrothermal method. The varied PEG concentrations significantly altered the morphology and particle size of the synthesizedmaterials. We demonstrate the improved peroxide-like assay of different NiMn2O4 nanoparticles for the first time. Among them, Ni4 nanoparticles exhibit good peroxidase-like activity by generating the oxidation of chromogenic substrate 3, 3', 5, 5'-tetramethylbenzidine (TMB) in the presence of H2O2 and a blue color charge transfer product with an absorption maximum is positioned at 652 nm. These observations led to the development of a method for assessingH2O2 that can be read visually and photometrically. The Ni4 nanoparticles show enhanced kinetics compared to the natural enzyme horse radish peroxidase (HRP) with a lower Km (0.168 mM) value. Additionally, this Ni4 nanosphere applies as a visible light photocatalyst for the degradation of methylene blue (MB) and rhodamine B (Rh B) dyes under visible-light irradiation. Under optimized conditions, the degradationrates of MB and Rh B are 68 and 80.7 %, respectively, after 210 min, and recyclable efficiency is about 99 % for Rh B photocatalytic degradation in the first test and 98 % for five cycles, and about 98 % for MB photocatalytic degradation in the first test and 97 % for five cycles.
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Affiliation(s)
- T Shahanas
- Department of Polymer Science, University of Madras, Guindy Campus, Chennai 600 025, India
| | - G Harichandran
- Department of Polymer Science, University of Madras, Guindy Campus, Chennai 600 025, India.
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Ahmed A, Verma S, Mahajan P, Sundramoorthy AK, Arya S. Upcycling of surgical facemasks into carbon based thin film electrode for supercapacitor technology. Sci Rep 2023; 13:12146. [PMID: 37500641 PMCID: PMC10374911 DOI: 10.1038/s41598-023-37499-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/22/2023] [Indexed: 07/29/2023] Open
Abstract
Polypropylene (PP), a commonly used plastic, is used for making the outer layers of a surgical face mask. In 2020, around 3 billion surgical face masks were disposed into the environment, causing a huge threat to wildlife, aquatic life, and ecosystems. In this work, we have reported the sulfonation technique for stabilizing the surgical face masks and their conversion into carbon nanoparticles for application as a supercapacitor electrode. The electrode is fabricated by preparing a slurry paste of carbon nanoparticles and pasting it on a conductive wearable fabric. To investigate the performance of the carbon thin film electrode, electrochemical techniques are employed. The Cyclic Voltammetry (CV) analysis performed at different scan rates in a 6 molar KOH electrolyte reveals that the carbon thin film acts as a positive electrode. At 4 A g-1, the electrode shows a specific capacitance of 366.22 F g-1 and 100% retention of specific capacitance for 8000 cycles. A two-electrode asymmetric device is fabricated using carbon thin film as the positive electrode, NiO thin film as the negative electrode, and a KOH separator between two electrodes. The device shows a specific capacitance of 113.73 F g-1 at 1.3 A g-1 and glows a red LED for 6 min. This work is a step towards upcycling the waste produced from surgical face masks used during the COVID-19 pandemic and its application for energy storage.
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Affiliation(s)
- Aamir Ahmed
- Department of Physics, University of Jammu, Jammu, Jammu and Kashmir, 180006, India
| | - Sonali Verma
- Department of Physics, University of Jammu, Jammu, Jammu and Kashmir, 180006, India
| | - Prerna Mahajan
- Department of Physics, University of Jammu, Jammu, Jammu and Kashmir, 180006, India
| | - Ashok K Sundramoorthy
- Centre for Nano-Biosensors, Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, 600077, India
| | - Sandeep Arya
- Department of Physics, University of Jammu, Jammu, Jammu and Kashmir, 180006, India.
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Sarkar DK, Selvanathan V, Mottakin M, Hasan AKM, Islam MA, Almohamadi H, Alharthi NH, Akhtaruzzaman M. Phytochemical-assisted green synthesis of CuFeO x nano-rose electrocatalysts for oxygen evolution reaction in alkaline media. RSC Adv 2023; 13:19130-19139. [PMID: 37362330 PMCID: PMC10288342 DOI: 10.1039/d3ra02512h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
This study represents a green synthesis method for fabricating an oxygen evolution reaction (OER) electrode by depositing two-dimensional CuFeOx on nickel foam (NF). Two-dimensional CuFeOx was deposited on NF using in situ hydrothermal synthesis in the presence of Aloe vera extract. This phytochemical-assisted synthesis of CuFeOx resulted in a unique nano-rose-like morphology (petal diameter 30-70 nm), which significantly improved the electrochemical surface area of the electrode. The synthesized electrode was analyzed for its OER electrocatalytic activity and it was observed that using 75% Aloe vera extract in the phytochemical-assisted synthesis of CuFeOx resulted in improved OER electrocatalytic performance by attaining an overpotential of 310 mV for 50 mA cm-2 and 410 mV for 100 mA cm-2. The electrode also sustained robust stability throughout the 50 h of chronopotentiometry studies under alkaline electrolyte conditions, demonstrating its potential as an efficient OER electrode material. This study highlights the promising use of Aloe vera extract as a green and cost-effective way to synthesize efficient OER electrode materials.
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Affiliation(s)
- D K Sarkar
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Department of Applied Chemistry and Chemical Engineering, Rajshahi University Rajshahi-6205 Bangladesh
| | - V Selvanathan
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University) Jalan Ikram-Uniten Kajang 43000 Selangor Malaysia
| | - M Mottakin
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Department of Applied Chemistry and Chemical Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University Gopalganj-8100 Bangladesh
| | - A K Mahmud Hasan
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
| | - Md Ariful Islam
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
| | - Hamad Almohamadi
- Department of Chemical Engineering, Faculty of Engineering, Islamic University of Madinah Madinah Saudi Arabia
| | - Nabeel H Alharthi
- Department of Mechanical Engineering, Faculty of Engineering, Islamic University of Madinah Madinah Saudi Arabia
- Department of Mechanical Engineering, College of Engineering, King Saud University Riyadh 11421 Saudi Arabia
| | - Md Akhtaruzzaman
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Graduate School of Pure and Applied Sciences, University of Tsukuba Tsukuba Ibaraki 305-8573 Japan
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Nolly C, Ikpo CO, Ndipingwi MM, Ekwere P, Iwuoha EI. Pseudocapacitive Effects of Multi-Walled Carbon Nanotubes-Functionalised Spinel Copper Manganese Oxide. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3514. [PMID: 36234643 PMCID: PMC9565235 DOI: 10.3390/nano12193514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Spinel copper manganese oxide nanoparticles combined with acid-treated multi-walled carbon nanotubes (CuMn2O4/MWCNTs) were used in the development of electrodes for pseudocapacitor applications. The CuMn2O4/MWCNTs preparation involved initial synthesis of Mn3O4 and CuMn2O4 precursors followed by an energy efficient reflux growth method for the CuMn2O4/MWCNTs. The CuMn2O4/MWCNTs in a three-electrode cell assembly and in 3 M LiOH aqueous electrolyte exhibited a specific capacitance of 1652.91 F g-1 at 0.5 A g-1 current load. Similar investigation in 3 M KOH aqueous electrolyte delivered a specific capacitance of 653.41 F g-1 at 0.5 A g-1 current load. Stability studies showed that after 6000 cycles, the CuMn2O4/MWCNTs electrode exhibited a higher capacitance retention (88%) in LiOH than in KOH (64%). The higher capacitance retention and cycling stability with a Coulombic efficiency of 99.6% observed in the LiOH is an indication of a better charge storage behaviour in this electrolyte than in the KOH electrolyte with a Coulombic efficiency of 97.3%. This superior performance in the LiOH electrolyte than in the KOH electrolyte is attributed to an intercalation/de-intercalation mechanism which occurs more easily in the LiOH electrolyte than in the KOH electrolyte.
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Synergistic effect of two complexing agents on the hydrothermal synthesis of self-supported ZnNiCo oxide as electrode material in supercapacitors. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Electrospun Nickel Manganite (NiMn 2O 4) Nanocrystalline Fibers for Humidity and Temperature Sensing. SENSORS 2021; 21:s21134357. [PMID: 34202332 PMCID: PMC8271516 DOI: 10.3390/s21134357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/18/2021] [Accepted: 06/20/2021] [Indexed: 11/25/2022]
Abstract
Nickel manganite nanocrystalline fibers were obtained by electrospinning and subsequent calcination at 400 °C. As-spun fibers were characterized by TG/DTA, Scanning Electron Microscopy and FT-IR spectroscopy analysis. X-ray diffraction and FT-IR spectroscopy analysis confirmed the formation of nickel manganite with a cubic spinel structure, while N2 physisorption at 77 K enabled determination of the BET specific surface area as 25.3 m2/g and (BJH) mesopore volume as 21.5 m2/g. The material constant (B) of the nanocrystalline nickel manganite fibers applied by drop-casting on test interdigitated electrodes on alumina substrate, dried at room temperature, was determined as 4379 K in the 20–50 °C temperature range and a temperature sensitivity of −4.95%/K at room temperature (25 °C). The change of impedance with relative humidity was monitored at 25 and 50 °C for a relative humidity (RH) change of 40 to 90% in the 42 Hzπ1 MHz frequency range. At 100 Hz and 25 °C, the sensitivity of 327.36 ± 80.12 kΩ/%RH was determined, showing that nickel manganite obtained by electrospinning has potential as a multifunctional material for combined humidity and temperature sensing.
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Ray A, Saruhan B. Application of Ionic Liquids for Batteries and Supercapacitors. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2942. [PMID: 34072536 PMCID: PMC8197857 DOI: 10.3390/ma14112942] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/23/2021] [Accepted: 05/25/2021] [Indexed: 11/17/2022]
Abstract
Nowadays, the rapid development and demand of high-performance, lightweight, low cost, portable/wearable electronic devices in electrical vehicles, aerospace, medical systems, etc., strongly motivates researchers towards advanced electrochemical energy storage (EES) devices and technologies. The electrolyte is also one of the most significant components of EES devices, such as batteries and supercapacitors. In addition to rapid ion transport and the stable electrochemical performance of electrolytes, great efforts are required to overcome safety issues due to flammability, leakage and thermal instability. A lot of research has already been completed on solid polymer electrolytes, but they are still lagging for practical application. Over the past few decades, ionic liquids (ILs) as electrolytes have been of considerable interest in Li-ion batteries and supercapacitor applications and could be an important way to make breakthroughs for the next-generation EES systems. The high ionic conductivity, low melting point (lower than 100 °C), wide electrochemical potential window (up to 5-6 V vs. Li+/Li), good thermal stability, non-flammability, low volatility due to cation-anion combinations and the promising self-healing ability of ILs make them superior as "green" solvents for industrial EES applications. In this short review, we try to provide an overview of the recent research on ILs electrolytes, their advantages and challenges for next-generation Li-ion battery and supercapacitor applications.
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Affiliation(s)
| | - Bilge Saruhan
- German Aerospace Center (DLR), Department of High-Temperature and Functional Coatings, Institute of Materials Research, 51147 Cologne, Germany;
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Ray A, Korkut D, Saruhan B. Efficient Flexible All-Solid Supercapacitors with Direct Sputter-Grown Needle-Like Mn/MnO x@Graphite-Foil Electrodes and PPC-Embedded Ionic Electrolytes. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1768. [PMID: 32906762 PMCID: PMC7557606 DOI: 10.3390/nano10091768] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 12/20/2022]
Abstract
Recent critical issues regarding next-generation energy storage systems concern the cost-effective production of lightweight, safe and flexible supercapacitors yielding high performances, such as high energy and power densities as well as a long cycle life. Thus, current research efforts are concentrated on the development of high-performance advance electrode materials with high capacitance and excellent stability and solid electrolytes that confer flexibility and safety features. In this work, emphasis is placed on the binder-free, needle-like nanostructured Mn/MnOx layers grown onto graphite-foil deposited by reactive sputtering technique and to the polymer gel embedded ionic electrolytes, which are to be employed as new flexible pseudocapacitive supercapacitor components. Microstructural, morphological and compositional analysis of the layers has been investigated by X-ray diffractometer (XRD), Field Emission Scanning Electron Microscope (FE-SEM) and X-ray photoelectron spectroscopy (XPS). A flexible lightweight symmetric pouch-cell solid-state supercapacitor device is fabricated by sandwiching a PPC-embedded ionic liquid ethyl-methylimidazolium bis (trifluoromethylsulfonyl) imide (EMIM)(TFSI) polymer gel electrolyte (PGE) between two Mn/MnOx@Graphite-foil electrodes and tested to exhibit promising supercapacitive behaviour with a wide stable electrochemical potential window (up to 2.2 V) and long-cycle stability. This pouch-cell supercapacitor device offers a maximum areal capacitance of 11.71 mF/cm2@ 0.03 mA/cm2 with maximum areal energy density (Ea) of 7.87 mWh/cm2 and areal power density (Pa) of 1099.64 mW/cm2, as well as low resistance, flexibility and good cycling stability. This supercapacitor device is also environmentally safe and could be operated under a relatively wide potential window without significant degradation of capacitance performance compared to other reported values. Overall, these rationally designed flexible symmetric all-solid-state supercapacitors signify a new promising and emerging candidate for component integrated storage of renewable energy harvested current.
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Affiliation(s)
- Apurba Ray
- Department of High-Temperature and Functional Coatings, Institute of Materials Research, German Aerospace Center (DLR), 51147 Cologne, Germany; (A.R.); (D.K.)
| | - Delale Korkut
- Department of High-Temperature and Functional Coatings, Institute of Materials Research, German Aerospace Center (DLR), 51147 Cologne, Germany; (A.R.); (D.K.)
- Department of Chemistry, RWTH Aachen University, 52062 Aachen, Germany
| | - Bilge Saruhan
- Department of High-Temperature and Functional Coatings, Institute of Materials Research, German Aerospace Center (DLR), 51147 Cologne, Germany; (A.R.); (D.K.)
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