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Zhang S, Liu X, Jia C, Sun Z, Jiang H, Jia Z, Wu G. Integration of Multiple Heterointerfaces in a Hierarchical 0D@2D@1D Structure for Lightweight, Flexible, and Hydrophobic Multifunctional Electromagnetic Protective Fabrics. NANO-MICRO LETTERS 2023; 15:204. [PMID: 37624447 PMCID: PMC10457279 DOI: 10.1007/s40820-023-01179-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023]
Abstract
The development of wearable multifunctional electromagnetic protective fabrics with multifunctional, low cost, and high efficiency remains a challenge. Here, inspired by the unique flower branch shape of "Thunberg's meadowsweet" in nature, a nanofibrous composite membrane with hierarchical structure was constructed. Integrating sophisticated 0D@2D@1D hierarchical structures with multiple heterointerfaces can fully unleash the multifunctional application potential of composite membrane. The targeted induction method was used to precisely regulate the formation site and morphology of the metal-organic framework precursor, and intelligently integrate multiple heterostructures to enhance dielectric polarization, which improves the impedance matching and loss mechanisms of the electromagnetic wave absorbing materials. Due to the synergistic enhancement of electrospinning-derived carbon nanofiber "stems", MOF-derived carbon nanosheet "petals" and transition metal selenide nano-particle "stamens", the CoxSey/NiSe@CNSs@CNFs (CNCC) composite membrane obtains a minimum reflection loss value (RLmin) of -68.40 dB at 2.6 mm and a maximum effective absorption bandwidth (EAB) of 8.88 GHz at a thin thickness of 2.0 mm with a filling amount of only 5 wt%. In addition, the multi-component and hierarchical heterostructure endow the fibrous membrane with excellent flexibility, water resistance, thermal management, and other multifunctional properties. This work provides unique perspectives for the precise design and rational application of multifunctional fabrics.
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Affiliation(s)
- Shuo Zhang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Xuehua Liu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Chenyu Jia
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Zhengshuo Sun
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Haowen Jiang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China
| | - Zirui Jia
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, People's Republic of China.
| | - Guanglei Wu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China.
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Tito GS, Abolanle AS, Kuvarega AT, Mamba BB, Feleni U. Nickel Selenide Quantum dot Reactor for Electro‐oxidation of Nevirapine in Wastewater. ChemistrySelect 2022. [DOI: 10.1002/slct.202202294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ginny S. Tito
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1710 Johannesburg South Africa
| | - Adekunle S. Abolanle
- Obafemi Awolowo University Department of Chemistry Ibadan Road 220005, lle-lfe Osun Nigeria
| | - Alex T. Kuvarega
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1710 Johannesburg South Africa
| | - Bhekie B. Mamba
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1710 Johannesburg South Africa
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1710 Johannesburg South Africa
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Poorahong S, Harding DJ, Keawmorakot S, Siaj M. Free standing bimetallic nickel cobalt selenide nanosheets as three-dimensional electrocatalyst for water splitting. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115568] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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4
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Maurya O, Khaladkar S, Horn MR, Sinha B, Deshmukh R, Wang H, Kim T, Dubal DP, Kalekar A. Emergence of Ni-Based Chalcogenides (S and Se) for Clean Energy Conversion and Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100361. [PMID: 34019738 DOI: 10.1002/smll.202100361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/13/2021] [Indexed: 06/12/2023]
Abstract
Nickel chalcogenide (S and Se) based nanostructures intrigued scientists for some time as materials for energy conversion and storage systems. Interest in these materials is due to their good electrochemical stability, eco-friendly nature, and low cost. The present review compiles recent progress in the area of nickel-(S and Se)-based materials by providing a comprehensive summary of their structural and chemical features and performance. Improving properties of the materials, such as electrical conductivity and surface characteristics (surface area and morphology), through strategies like nano-structuring and hybridization, are systematically discussed. The interaction of the materials with electrolytes, other electro-active materials, and inactive components are analyzed to understand their effects on the performance of energy conversion and storage devices. Finally, outstanding challenges and possible solutions are briefly presented with some perspectives toward the future development of these materials for energy-oriented devices with high performance.
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Affiliation(s)
- Oshnik Maurya
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra, 400019, India
| | - Somnath Khaladkar
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra, 400019, India
| | - Michael R Horn
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Bhavesh Sinha
- National Centre for Nanoscience and Nanotechnology, University of Mumbai (NCNNUM), Mumbai, 400098, India
| | - Rajendra Deshmukh
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra, 400019, India
| | - Hongxia Wang
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - TaeYoung Kim
- Department of Materials Science and Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam, 13120, South Korea
| | - Deepak P Dubal
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Archana Kalekar
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra, 400019, India
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Airo MA, Otieno F, Mxakaza L, Ipadeola A, Kadzutu-Sithole RS, Machogo-Phao LFE, Billing C, Moloto M, Moloto N. Probing the stoichiometry dependent catalytic activity of nickel selenide counter electrodes in the redox reaction of iodide/triiodide electrolyte in dye sensitized solar cells. RSC Adv 2020; 10:39509-39520. [PMID: 35515413 PMCID: PMC9057497 DOI: 10.1039/d0ra06150f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/04/2020] [Indexed: 12/28/2022] Open
Abstract
Nickel selenide (Ni x Se y ) systems have received much attention in recent years as potential low cost counter electrodes (CEs) in dye sensitized solar cells (DSSCs). Their electrocatalytic activities are comparable to that of the conventional platinum CE. Despite their achievements, the effect of stoichiometry on their catalytic performance as CEs in DSSCs still remains unclear, hence the motivation for this work. Different stoichiometries of Ni x Se y were synthesized via a colloidal method in oleylamine or oleylamine/oleic acid mixture at the appropriate synthetic temperature and Ni to Se precursor ratio. X-ray diffraction revealed that different stoichiometries of nickel selenide were formed namely, NiSe2, Ni3Se4, Ni0.85Se, NiSe and Ni3Se2. Scanning electron microscopy showed that all the stoichiometries had predominantly spherical-like morphologies. Cyclic voltammetry, electrochemical impedance spectroscopy analysis and the photovoltaic performances of the DSSCs fabricated using the different Ni x Se y CEs revealed that selenium rich stoichiometries performed better than the nickel rich ones. Consequently, the catalytic activity towards the redox reaction of the triiodide/iodide electrolyte and hence the power conversion efficiency (PCE) followed the order of NiSe2 > Ni3Se4 > Ni0.85Se > NiSe > Ni3Se2 with PCE values of 3.31%, 3.25%, 3.17%, 2.35% and 1.52% respectively under ambient conditions.
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Affiliation(s)
- Mildred A Airo
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774.,Department of Chemistry, Vaal University of Technology Private Bag X021 Vanderbijlpark 1900 Republic of South Africa
| | - Francis Otieno
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774.,Department of Physics, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa
| | - Lineo Mxakaza
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774
| | - Adewale Ipadeola
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774
| | - Rudo S Kadzutu-Sithole
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774
| | - Lerato F E Machogo-Phao
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774.,Analytical Services Division, Mintek 200 Malibongwe Drive, Randburg South Africa
| | - Caren Billing
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774
| | - Makwena Moloto
- Department of Chemistry, Vaal University of Technology Private Bag X021 Vanderbijlpark 1900 Republic of South Africa
| | - Nosipho Moloto
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, Wits 2050 Republic of South Africa +27 73 761 0875 +27 11 717 6774
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Tito GS, Abolanle AS, Kuvarega AT, Idris AO, Mamba BB, Feleni U. Nickel Selenide Quantum Dot Applications in Electrocatalysis and Sensors. ELECTROANAL 2020. [DOI: 10.1002/elan.202060341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ginny S. Tito
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1709 Johannesburg South Africa
| | - Adekunle S. Abolanle
- Obafemi Awolowo University Department of Chemistry Ibadan Road 220005 lle-lfe, Osun Nigeria
| | - Alex T. Kuvarega
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1709 Johannesburg South Africa
| | - Azeez O. Idris
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1709 Johannesburg South Africa
| | - Bhekie B. Mamba
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1709 Johannesburg South Africa
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability College of Science Engineering and Technology University of South Africa Florida Campus 1709 Johannesburg South Africa
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7
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Yue C, Yang P, Wang J, Zhao X, Wang Y, Yang L. Facile synthesis and characterization of nano-Pd loaded NiCo microfibers as stable catalysts for hydrogen generation from sodium borohydride. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Jiang QS, Li W, Wu J, Cheng W, Zhu J, Zhu T, Ren S, Zhang Y. Enhanced photovoltaic performance of dye-sensitized solar cells based on electrodeposited sulfur-doped MSex (M=Co, Ni) films. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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An electrodeposited amorphous cobalt sulphide nanobowl array with secondary nanosheets as a multifunctional counter electrode for enhancing the efficiency in a dye-sensitized solar cell. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Kuo FY, Lin FS, Yeh MH, Fan MS, Hsiao LY, Lin JJ, Jeng RJ, Ho KC. Synthesis of Surfactant-Free and Morphology-Controllable Vanadium Diselenide for Efficient Counter Electrodes in Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25090-25099. [PMID: 31117438 DOI: 10.1021/acsami.9b03328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, a transition-metal selenide, vanadium diselenide (VSe2), with various morphologies was synthesized by employing a surfactant-free hydrothermal method under varied temperature conditions (190-220 °C). Although the physical properties of VSe2 have been studied before, only limited morphological change or application were explored. This study, for the first time, applied VSe2 as the electrocatalytic counter electrode (CE) in dye-sensitized solar cells (DSSCs) and showed an attractive cell efficiency. The mechanism of forming the tunable VSe2 morphologies is proposed. The evaluation of solar cell efficiency shows the correlation between morphology and electrocatalytic properties. It was further shown that VSe2-200 with the cauliflower-like morphology shows the highest cell performance of DSSC with an efficiency of 9.23 ± 0.07% under 1 sun irradiance, superior to that of the Pt-based DSSC (8.48 ± 0.08%). An electrochemical technique equipped with a rotating disk electrode system was introduced to confirm the high electrocatalytic performance with this particular morphology. The optimized VSe2 demonstrated good long-term stability with 78% retention after 500 cycles of the consecutive cyclic voltammetry, compared to 60% for the Pt CE. The control in morphology in vanadium diselenide synthesis and its usage in Pt-free CE DSSC have advanced the progress in electrochemistry.
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Affiliation(s)
| | | | - Min-Hsin Yeh
- Department of Chemical Engineering , National Taiwan University of Science and Technology , Taipei 10607 , Taiwan
| | | | | | - Jiang-Jen Lin
- Department of Materials Science and Engineering , National Chung Hsing University , Taichung 40227 , Taiwan
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Murugadoss V, Panneerselvam P, Yan C, Guo Z, Angaiah S. A simple one-step hydrothermal synthesis of cobalt nickel selenide/graphene nanohybrid as an advanced platinum free counter electrode for dye sensitized solar cell. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.142] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Bifacial quasi-solid-state dye-sensitized solar cell with metal selenide M0.85Se (M = Co, Ni) as counter electrode. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.232] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Sultana UK, O'Mullane AP. Electrochemically Fabricated Ni−P, Ni−S and Ni−Se Materials for Overall Water Splitting: Investigating the Concept of Bifunctional Electrocatalysis. ChemElectroChem 2019. [DOI: 10.1002/celc.201801731] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ummul K. Sultana
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) Brisbane QLD 4001 Australia
| | - Anthony P. O'Mullane
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology (QUT) Brisbane QLD 4001 Australia
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A Review on the Advancement of Ternary Alloy Counter Electrodes for Use in Dye-Sensitised Solar Cells. METALS 2018. [DOI: 10.3390/met8121080] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A dye-sensitised solar cell (DSSC) counter electrode (CE) plays a vital role in catalysing the conversion of triiodide ( I 3 − ) to iodide ions ( I − ), thereby ensuring the completion of the repetitive cycle of electricity generation. The platinum CE, despite being the standard counter electrode in DSSCs, has drawbacks of platinum’s rarity and high cost. Platinum is an excellent redox catalyst, and consequently, it is the most sought-after metal for catalytic conversions. The huge demand for platinum in the automotive industry for vehicular catalytic converters, the pharmaceutical industry, and in oil refining, as well as other industries, has driven its price to unprecedented levels. The prohibitive price of platinum has caused newer thin film technologies, such as the DSSC which depends on the platinum CE, to be cost-ineffective, thus meaning they cannot compete with the better-established silicon-based solar cells. These problems have stagnated the development of the DSSC, which in turn has dampened larger commercialisation prospects for this thin film technology. With this in mind, this review paper focuses on recent progress in the research and development of alternative cost-effective materials to replace Pt-based CEs. Ternary alloys are amongst the possible alternatives that have been explored, yielding varied results. Alloys, especially ternary sulphides, selenides, and oxides, are attractive as alternatives as they are cheap and are easily fabricated. Ternary alloys also have a synergistic effect produced by the coexistence of two metal ions in a crystal structure, which is believed to induce greater catalytic capability, thus making them ideal cost-effective materials to replace the Pt CE in DSSCs. This review intends to highlight the performance of ternary alloy counter electrodes through the analysis of charge transfer resistance and power conversion efficiencies. Focus is also given to the restrictions and impediments to the attainment of higher power conversion efficiency in alternative CEs. The advances in fabrication of simple ternary alloys, as well as more advanced hierarchical nanostructured counter electrodes, are discussed here in detail. Results obtained to date indicate that the efficiencies of ternary alloy counter electrodes are still below that of the platinum counter electrode, and hence more research is required to enhance their efficiencies.
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Zhen W, Ning X, Wang M, Wu Y, Lu G. Enhancing hydrogen generation via fabricating peroxide decomposition layer over NiSe/MnO2-CdS catalyst. J Catal 2018. [DOI: 10.1016/j.jcat.2018.09.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Ou J, Gong C, Wang M, Xiang J, Liu J. Highly efficient ZIF-8/graphene oxide derived N-doped carbon sheets as counter electrode for dye-sensitized solar cells. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.08.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Hollow NiCo2Se4 microspheres composed of nanoparticles as multifunctional electrocatalysts for unassisted artificial photosynthesis. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Chen T, Li S, Gui P, Wen J, Fu X, Fang G. Bifunctional bamboo-like CoSe 2 arrays for high-performance asymmetric supercapacitor and electrocatalytic oxygen evolution. NANOTECHNOLOGY 2018; 29:205401. [PMID: 29469814 DOI: 10.1088/1361-6528/aab19b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bifunctional bamboo-like CoSe2 arrays are synthesized by thermal annealing of Co(CO3)0.5OH grown on carbon cloth in Se atmosphere. The CoSe2 arrays obtained have excellent electrical conductivity, larger electrochemical active surface areas, and can directly serve as a binder-free electrode for supercapacitors and the oxygen evolution reaction (OER). When tested as a supercapacitor electrode, the CoSe2 delivers a higher specific capacitance (544.6 F g-1 at current density of 1 mA cm-2) compared with CoO (308.2 F g-1) or Co3O4 (201.4 F g-1). In addition, the CoSe2 electrode possesses excellent cycling stability. An asymmetric supercapacitor (ASC) is also assembled based on bamboo-like CoSe2 as a positive electrode and active carbon as a negative electrode in a 3.0 M KOH aqueous electrolyte. Owing to the unique stucture and good electrochemical performance of bamboo-like CoSe2, the as-assembled ACS can achieve a maximum operating voltage window of 1.7 V, a high energy density of 20.2 Wh kg-1 at a power density of 144.1 W kg-1, and an outstanding cyclic stability. As the catalyst for the OER, the CoSe2 exhibits a lower potential of 1.55 V (versus RHE) at current density of 10 mA cm-2, a smaller Tafel slope of 62.5 mV dec-1 and an also outstanding stability.
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Affiliation(s)
- Tian Chen
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, 430072, People's Republic of China
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