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Wang H, Wang W, Zhang G, Gao X. Research on the performance of modified blue coke in adsorbing hexavalent chromium. Sci Rep 2023; 13:7223. [PMID: 37142630 PMCID: PMC10160119 DOI: 10.1038/s41598-023-34381-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/28/2023] [Indexed: 05/06/2023] Open
Abstract
To solve the issue of hexavalent chromium (Cr(VI)) contamination in water bodies, blue coke powder (LC) was chemically changed using potassium hydroxide to create the modified material (GLC), which was then used to treat a Cr(VI)-containing wastewater solution. The differences between the modified and unmodified blue coke's adsorption characteristics for Cr(VI) were studied, and the impact of pH, starting solution concentration, and adsorption period on the GLC's adsorption performance was investigated. The adsorption behavior of the GLC was analyzed using isothermal adsorption models, kinetic models, and adsorption thermodynamic analysis. The mechanism of Cr(VI) adsorption by the GLC was investigated using characterization techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FE-SEM), X-Ray Diffraction (XRD), and X-Ray Photoelectron Spectroscopy (XPS). With the biggest difference in removal rate at pH = 2, which was 2.42 times that of LC, batch adsorption experiments revealed that, under the same adsorption conditions, the GLC always performed better than LC. With a specific surface area that was three times that of LC and an average pore diameter that was 0.67 times that of LC, GLC had a more porous structure than LC. The alteration significantly increased the number of hydroxyls on the surface of GLC by altering the structural makeup of LC. The ideal pH for removing Cr(VI) was 2, and the ideal GLC adsorbent dosage was 2.0 g/L. Pseudo-second-order kinetic (PSO) model and Redlich-Peterson (RP) model can effectively describe the adsorption behavior of GLC for Cr(VI). Physical and chemical adsorption work together to remove Cr(VI) by GLC in a spontaneous, exothermic, and entropy-increasing process, with oxidation-reduction processes playing a key role. GLC is a potent adsorbent that can be used to remove Cr(VI) from aqueous solutions.
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Affiliation(s)
- Hua Wang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China.
- Shaanxi Provincial Key Laboratory of Clean Utilization of Low-Modified Coal, Yulin University, Yulin, 719000, China.
| | - Wencheng Wang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
| | - Guotao Zhang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
| | - Xuchun Gao
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
- Shaanxi Provincial Key Laboratory of Clean Utilization of Low-Modified Coal, Yulin University, Yulin, 719000, China
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2
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Ding S, Yang C, Yuan J, Li H, Yuan X, Li M. An overview of the preparation and application of counter electrodes for DSSCs. RSC Adv 2023; 13:12309-12319. [PMID: 37091618 PMCID: PMC10114283 DOI: 10.1039/d3ra00926b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 04/06/2023] [Indexed: 04/25/2023] Open
Abstract
Dye-sensitized solar cells (DSSCs) are potential products for the next generation of photovoltaic technology, which is one of the research hotspots in photovoltaics. The counter electrode in DSSCs collects electron in the external circuit and catalyzes the reduction of the redox electrolyte and hole transport in the solid electrolyte. Thus, it undoubtedly has an important impact on the photovoltaic performance, long-term stability, and cost of DSSCs. In this work, the materials of counter electrodes are classified into metals, carbon materials, conductive polymers, and inorganic compounds. The preparation, mechanism, conversion efficiency, and properties of counter electrodes are reviewed.
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Affiliation(s)
- Shuang Ding
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 Liaoning China
| | - Chaoqiao Yang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 Liaoning China
| | - Jie Yuan
- School of Chemistry and Materials Engineering, Liupanshui Normal University Liupanshui 553004 Guizhou China
| | - Huijin Li
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 Liaoning China
| | - Xianli Yuan
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 Liaoning China
| | - Min Li
- School of Chemistry and Materials Engineering, Liupanshui Normal University Liupanshui 553004 Guizhou China
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Jiang Y, Di J, Ma Y, Fu S, Dong Y, Yuan B. Adsorption mechanism of phosphorus on biomass ash modified with lanthanum immobilized by chitosan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:63915-63931. [PMID: 37059955 DOI: 10.1007/s11356-023-26841-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 04/03/2023] [Indexed: 04/16/2023]
Abstract
The immobilized lanthanum-modified biomass ash gel ball (CS-La-BA) was prepared with lanthanum chloride, biomass ash, and chitosan to remove phosphorus from water. CS-La-BA was characterized by several analytical techniques. SEM-EDS results showed that CS-La-BA has a well-developed pore structure and abundant adsorption sites. The surface area of BET is 75.46 m2/g and the pore size is mostly at 1.84 nm, indicating that it is a composite porous material with abundant microporous structure. The presence of La on biomass ash and the charge property of CS-La-BA were determined by XRD and zeta potential, and the adsorption mechanism of CS-La-BA on phosphate, including precipitation, electrostatic adsorption, ligand exchange, and complexation mechanism, was revealed by FTIR and XPS. The effects of pH, temperature, adsorbent dosage, initial phosphorus concentration, adsorption time, and coexisting ions on the phosphorus uptake performance of CS-La-BA were discussed. The adsorption experiment results show that the phosphorus removal rate of CS-La-BA can reach 95.6%. Even after six desorption and regeneration experiments, the phosphorus removal rate still reaches 68.13%, which indicates that CS-La-BA has good phosphorus adsorption performance and desorption and regeneration capacity. The phosphorus adsorption process of CS-La-BA conforms to the Freundlich isotherm adsorption equation and general-order kinetic model. The internal diffusion of the adsorption process is dominant, and the maximum adsorption capacity is 31.73 mg/g (25 ℃). Thermodynamic experiments show that the adsorption process of phosphorus by CS-La-BA is a spontaneous entropy increase process.
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Affiliation(s)
- Yangyang Jiang
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China
| | - Junzhen Di
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China.
| | - Yiming Ma
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China
| | - Saiou Fu
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China
| | - Yanrong Dong
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China
| | - Bofu Yuan
- School of Civil Engineering, Liaoning University of Engineering and Technology, Liaoning Province, Fuxin, 123000, China
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Feng M, Wang W, Hu Z, Fan C, Zhao X, Wang P, Li H, Yang L, Wang X, Liu Z. Engineering chemical-bonded Ti 3C 2 MXene@carbon composite films with 3D transportation channels for promoting lithium-ion storage in hybrid capacitors. SCIENCE CHINA MATERIALS 2022; 66:944-954. [PMID: 36937247 PMCID: PMC10015531 DOI: 10.1007/s40843-022-2268-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 09/21/2022] [Indexed: 06/18/2023]
Abstract
UNLABELLED Lithium-ion capacitors (LICs) are promising energy storage devices because they feature the high energy density of lithium-ion batteries and the high power density of supercapacitors. However, the mismatch of electrochemical reaction kinetics between the anode and cathode in LICs makes exploring anode materials with fast ion diffusion and electron transfer channels an urgent task. Herein, the two-dimensional (2D) Ti3C2 MXene with controllable terminal groups was introduced into 1D carbon nanofibers to form a 3D conductive network by the electrospinning strategy. In such Ti3C2 MXene and carbon matrix composites (named KTi-400@CNFs), the 2D nanosheet structure endows Ti3C2 MXene with more active sites for Li+ ion storage, and the carbon framework is favorable to the conductivity of the composites. Impressively, Ti-O-C bonds are formed at the interface between Ti3C2 MXene and the carbon framework. Such chemical bonding in the composites builds a bridge for rapid electron transportation and quick ion diffusion in the longitudinal direction from layer to layer. As a result, the optimized KTi-400@CNFs composites maintain a good capacity of 235 mA h g-1 for 500 cycles at a current density of 5 A g-1. The LIC consisting of the KTi-400@CNFs//AC configuration achieves high energy density (114.3 W h kg-1) and high power density (12.8 kW kg-1). This paper provides guidance for designing 2D materials and the KTi-400@CNFs composites with such a unique structure and superior electrochemical performance have great potential in the next-generation energy storage fields. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material is available for this article at 10.1007/s40843-022-2268-9 and is accessible for authorized users.
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Affiliation(s)
- Min Feng
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Wanli Wang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Zhaowei Hu
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Cheng Fan
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Xiaoran Zhao
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Peng Wang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Huifang Li
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
| | - Lei Yang
- Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, Qingdao University, Qingdao, 266071 China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 China
| | - Xiaojun Wang
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071 China
| | - Zhiming Liu
- College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science & Technology, Qingdao, 266061 China
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5
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Recent advances in morphology, aperture control, functional control and electrochemical sensors applications of carbon nanofibers. Anal Biochem 2022; 656:114882. [PMID: 36063917 DOI: 10.1016/j.ab.2022.114882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/21/2022] [Accepted: 08/29/2022] [Indexed: 01/13/2023]
Abstract
Among many nanomaterials, electrospun carbon nanofibers (CNFs) have become one of the hot spots in nanoscience research because of their interesting physicochemical and biological properties such as large specific surface area, easy functionalization and biocompatibility. Polyacrylonitrile(PAN) has also become the most widely used precursor fiber for CNF manufacturing. In this paper, the latest advances in the synthesis of CNF by electrospinning were reviewed, including using template method, heat treatment, coaxial spinning technology to control the morphology and aperture, as well as the functionalization of electrospinning doped with chemical substances such as heteroatoms, nanoparticles (NPs), carbon nanotubes (CNTs) and grapheme (Gr), in order to further expand its application scope. The application of electrospun CNFs as electrochemical sensing platform for toxic and harmful substances in food and environment was also briefly introduced.
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Lee U, Yang G, Park S. Improvement of Mesoporosity on Supercapacitive Performance of Activated Carbons Derived From Coffee Grounds. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ui‐Won Lee
- Department of Chemistry Inha University Incheon 22212 Republic of Korea
| | - Guijun Yang
- Department of Chemistry Inha University Incheon 22212 Republic of Korea
| | - Soo‐Jin Park
- Department of Chemistry Inha University Incheon 22212 Republic of Korea
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7
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Tong F, Guo J, Pan Y, Liu H, Lv Y, Wu X, Jia D, Zhao X, Hou S. Coaxial spinning fabricated high nitrogen-doped porous carbon walnut anchored on carbon fibers as anodic material with boosted lithium storage performance. J Colloid Interface Sci 2021; 586:371-380. [PMID: 33162046 DOI: 10.1016/j.jcis.2020.10.100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/18/2020] [Accepted: 10/24/2020] [Indexed: 11/18/2022]
Abstract
Commercial graphite with low theoretical capacity cannot meet the ever-increasing requirement demands of lithium-ion batteries (LIBs) caused by the rapid development of electric devices. Rationally designed carbon-based nanomaterials can provide a wide range of possibilities to meet the growing requirements of energy storage. Hence, the porous walnut anchored on carbon fibers with reasonable pore structure, N-self doping (10.2 at%) and novel structure and morphology is designed via interaction of inner layer polyethylene oxide and outer layer polyacrylonitrile and polyvinylpyrrolidone during pyrolysis of the obtained precursor, which is fabricated by coaxial electrospinning. As an electrode material, the as-made sample shows a high discharge capacity of 965.3 mA h g-1 at 0.2 A g-1 in the first cycle, retains a capacity of 819.7 mA h g-1 after 500 cycles, and displays excellent cycling stability (475.2 mA h g-1 at 1 A g-1 after 1000 cycles). Moreover, the capacity of the electrode material still keeps 260.5 mA h g-1 at 5 A g-1 after 1000 cycles. Therefore, the obtained sample has a bright application prospect as a high performance anode material for LIBs. Besides, this design idea paves the way for situ N-enriched carbon material with novel structure and morphology by coaxial electrospinning.
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Affiliation(s)
- Fenglian Tong
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
| | - Jixi Guo
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China..
| | - Yanliang Pan
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
| | - Huibiao Liu
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yan Lv
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
| | - Xueyan Wu
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
| | - Dianzeng Jia
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China..
| | - Xiaojuan Zhao
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
| | - Shengchao Hou
- Key Laboratory of Energy Materials Chemistry, Ministry of Education; Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China
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8
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Nie G, Zhao X, Luan Y, Jiang J, Kou Z, Wang J. Key issues facing electrospun carbon nanofibers in energy applications: on-going approaches and challenges. NANOSCALE 2020; 12:13225-13248. [PMID: 32555910 DOI: 10.1039/d0nr03425h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Electrospun carbon nanofibers (CNFs), with one-dimensional (1D) morphology, tunable size, mechanical flexibility, and functionalities by themselves and those that can be added onto them, have witnessed the intensive development and extensive applications in energy storage and conversion, such as supercapacitors, batteries, and fuel cells. However, conventional solid CNFs often suffer from a rather poor electrical conductivity and low specific surface area, compared with the graphene and carbon nanotube counterparts. A well-engineered porous structure in CNFs increases their surface areas and reactivity, but there is a delicate balance between the level and type of pores and mechanical robustness. In addition, CNFs by themselves often show unsatisfactory electrochemical performance in energy storage and conversion, where, to endow them with high and durable activity, one effective approach is to dope CNFs with certain heteroatoms. Up to now, various activation strategies have been proposed and some of them have demonstrated great success in addressing these key issues. In this review, we focus on the recent advances in the issue-oriented schemes for activating the electrospun CNFs in terms of enhancing the conductivity, modulating pore configuration, doping with heteroatoms, and reinforcing mechanical strength, in close reference to their applications in supercapacitors. The basic scientific principles involved in these activation processes and their effectiveness in boosting the electrochemical performance of CNFs are examined. Finally, some of the on-going challenges and future perspectives in engineering CNFs for better performance are highlighted.
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Affiliation(s)
- Guangdi Nie
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles and Clothing, Qingdao University, Qingdao, 266071, P. R. China
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Kim KH, Shin DY, Ahn HJ. Ecklonia cava based mesoporous activated carbon for high-rate energy storage devices. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.01.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Strategies to Hierarchical Porosity in Carbon Nanofiber Webs for Electrochemical Applications. SURFACES 2019. [DOI: 10.3390/surfaces2010013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Morphology and porosity are crucial aspects for designing electrodes with facile transport of electrons, ions and matter, which is a key parameter for electrochemical energy storage and conversion. Carbon nanofibers (CNFs) prepared by electrospinning are attractive for their high aspect ratio, inter-fiber macroporosity and their use as self-standing electrodes. The present work compares several strategies to induce intra-fiber micro-mesoporosity in self-standing CNF webs prepared by electrospinning polyacrylonitrile (PAN). Two main strategies were investigated, namely i) a templating method based on the addition of a porogen (polymethyl methacrylate, polyvinylpyrrolidone, Nafion® or ZnCl2) in the electrospinning solution of PAN, or ii) the activation in ammonia of previously formed CNF webs. The key result of this study is that open intra-fiber porosity could be achieved only when the strategies i) and ii) were combined. When each approach was applied separately, only closed intra-fiber porosity or no intra-fiber porosity was observed. In contrast, when both strategies were used in combination all CNF webs showed high mass-specific areas in the range of 325 to 1083 m2·g−1. Selected webs were also characterized for their carbon structure and electrical conductivity. The best compromise between high porosity and high electrical conductivity was identified as the fibrous web electrospun from PAN and polyvinylpyrrolidone.
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Li Q, Mu J, Zhou J, Zhao Y, Zhuo S. Avoiding the use of corrosive activator to produce nitrogen-doped hierarchical porous carbon materials for high-performance supercapacitor electrode. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.11.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Tao K, Lv S, Hai Y, Gong Y. Electrochemical performance of antimony/chlorine-incorporated nickel foam. CrystEngComm 2019. [DOI: 10.1039/c9ce01443h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this paper, an Sb/Cl-incorporated nickel foam (NF) electrode material was grown on acid-pretreated NF by one-step chemical vapor deposition using SbCl3 as the Sb source.
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Affiliation(s)
- Keyu Tao
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- P. R. China
| | - Sen Lv
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- P. R. China
| | - Yang Hai
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- P. R. China
| | - Yun Gong
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- P. R. China
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13
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An GH, Kim H, Ahn HJ. Excavated carbon with embedded Si nanoparticles for ultrafast lithium storage. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.07.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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An GH, Lee DY, Ahn HJ. Hierarchically mesoporous activated carbon prepared from the dissolution of zinc oxide for high-rate electrical double layer capacitors. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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15
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An GH, Kim H, Ahn HJ. Improved Ionic Diffusion through the Mesoporous Carbon Skin on Silicon Nanoparticles Embedded in Carbon for Ultrafast Lithium Storage. ACS APPLIED MATERIALS & INTERFACES 2018; 10:6235-6244. [PMID: 29381857 DOI: 10.1021/acsami.7b15950] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Because of their combined effects of outstanding mechanical stability, high electrical conductivity, and high theoretical capacity, silicon (Si) nanoparticles embedded in carbon are a promising candidate as electrode material for practical utilization in Li-ion batteries (LIBs) to replace the conventional graphite. However, because of the poor ionic diffusion of electrode materials, the low-grade ultrafast cycling performance at high current densities remains a considerable challenge. In the present study, seeking to improve the ionic diffusion, we propose a novel design of mesoporous carbon skin on the Si nanoparticles embedded in carbon by hydrothermal reaction, poly(methyl methacrylate) coating process, and carbonization. The resultant electrode offers a high specific discharge capacity with excellent cycling stability (1140 mA h g-1 at 100 mA g-1 after 100 cycles), superb high-rate performance (969 mA h g-1 at 2000 mA g-1), and outstanding ultrafast cycling stability (532 mA h g-1 at 2000 mA g-1 after 500 cycles). The battery performances are surpassing the previously reported results for carbon and Si composite-based electrodes on LIBs. Therefore, this novel approach provides multiple benefits in terms of the effective accommodation of large volume expansions of the Si nanoparticles, a shorter Li-ion diffusion pathway, and stable electrochemical conditions from a faster ionic diffusion during cycling.
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Affiliation(s)
- Geon-Hyoung An
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 01811, Korea
| | - Hyeonjin Kim
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 01811, Korea
| | - Hyo-Jin Ahn
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 01811, Korea
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16
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Lee DY, An GH, Ahn HJ. High-surface-area tofu based activated porous carbon for electrical double-layer capacitors. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.03.032] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Udomsanti P, Vongsetskul T, Limthongkul P, Tangboriboonrat P, Subannajui K, Tammawat P. Interpenetrating network of titania and carbon ultrafine fibers as hybrid anode materials for high performance sodium-ion batteries. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.156] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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An GH, Lee DY, Ahn HJ. Tunneled Mesoporous Carbon Nanofibers with Embedded ZnO Nanoparticles for Ultrafast Lithium Storage. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12478-12485. [PMID: 28323407 DOI: 10.1021/acsami.7b01286] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carbon and metal oxide composites have received considerable attention as anode materials for Li-ion batteries (LIBs) owing to their excellent cycling stability and high specific capacity based on the chemical and physical stability of carbon and the high theoretical specific capacity of metal oxides. However, efforts to obtain ultrafast cycling stability in carbon and metal oxide composites at high current density for practical applications still face important challenges because of the longer Li-ion diffusion pathway, which leads to poor ultrafast performance during cycling. Here, tunneled mesoporous carbon nanofibers with embedded ZnO nanoparticles (TMCNF/ZnO) are synthesized by electrospinning, carbonization, and postcalcination. The optimized TMCNF/ZnO shows improved electrochemical performance, delivering outstanding ultrafast cycling stability, indicating a higher specific capacity than previously reported ZnO-based anode materials in LIBs. Therefore, the unique architecture of TMCNF/ZnO has potential for use as an anode material in ultrafast LIBs.
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Affiliation(s)
- Geon-Hyoung An
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
| | - Do-Young Lee
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
| | - Hyo-Jin Ahn
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
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Wu J, Lan Z, Lin J, Huang M, Huang Y, Fan L, Luo G, Lin Y, Xie Y, Wei Y. Counter electrodes in dye-sensitized solar cells. Chem Soc Rev 2017; 46:5975-6023. [DOI: 10.1039/c6cs00752j] [Citation(s) in RCA: 480] [Impact Index Per Article: 68.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This article panoramically reviews the counter electrodes in dye-sensitized solar cells, which is of great significance for the development of photovoltaic and photoelectric devices.
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20
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Li X, Li X, Zhou J, Dong Y, Xie Z, Cai W, Zhang C. Facile synthesis of hierarchical porous carbon derived from carboxyl graphene oxide/phenolic foam for high performance supercapacitors. RSC Adv 2017. [DOI: 10.1039/c7ra08602d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hierarchical porous carbon materials were prepared using a facile and low-cost method from phenolic resin and carboxyl graphene oxide by foaming and carbonization and exhibited an excellent capacitive performance.
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Affiliation(s)
- Xiaozheng Li
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Xi Li
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Jian Zhou
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Yulin Dong
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Zhizhong Xie
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Weiquan Cai
- School of Chemistry, Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Chaocan Zhang
- School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan 430070
- PR China
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21
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An GH, Lee DY, Lee YJ, Ahn HJ. Ultrafast Lithium Storage Using Antimony-Doped Tin Oxide Nanoparticles Sandwiched between Carbon Nanofibers and a Carbon Skin. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30264-30270. [PMID: 27759368 DOI: 10.1021/acsami.6b10868] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Metal oxides as anode materials for Li-ion batteries (LIBs) are of significant interest to many potential technologies because of their high theoretical capacity value, low price, and environmentally friendly features. In spite of these considerable benefits and ongoing progress in the field, momentous challenges exist, related with structural disintegration due to volume expansion of electrode materials. This leads to rapid capacity decline and must be resolved in order to progress for realistic utilization of LIBs with ultrafast cycling stability. This article proposes a novel architecture of Sb-doped SnO2 nanoparticles sandwiched between carbon nanofiber and carbon skin (CNF/ATO/C) using electrospinning and hydrothermal methods. The CNF/ATO/C exhibits superb electrochemical behavior such as high specific capacity and outstanding cycling stability (705 mA h g-1 after 100 cycles), outstanding high-rate performance (411 mA h g-1 at 2000 mA g-1), and ultrafast cycling stability (347 mA h g-1 at 2000 mA g-1 after 100 cycles), which is high compared to any reported value using SnO2-based anode materials. Thus, this unique architecture furnishes profitable effects, including electroactive sites, structural stability, and electrical conductivity, which can potentially be realizes for ultrafast LIBs.
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Affiliation(s)
- Geon-Hyoung An
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
| | - Do-Young Lee
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
| | - Yu-Jin Lee
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
| | - Hyo-Jin Ahn
- Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea
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22
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An GH, An H, Ahn HJ. Ruthenium nanofibers as efficient counter electrodes for dye-sensitized solar cells. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.06.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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