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Activated Charcoal Modified Graphite Felts Using for Positive Electrodes of Vanadium Redox Flow Battery
Yang, Haitao1; Fan, Chuanlin1; Zhu, Qingshan1,2
2017-11-01
发表期刊JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE
ISSN2381-6872
卷号14期号:4页码:041004
摘要

In the present paper, a composite electrode material was developed for vanadium redox flow batteries (VRFBs). Activated charcoal particles were evenly immobilized on the graphite felt (GF) via a sucrose pyrolysis process for the first time. The in site formed pyrolytic carbon is used as the binder, because it is essentially carbon material as well as GF and activated charcoal, which has a natural tendency to realize good adhesion and low contact resistance. The activated charcoal decorated GF electrode (abbreviated as the composite electrode) possesses larger surface area (13.8 m(2) g(-1)), more than two times as GF (6.3 m(2) g(-1)). The oxygen content of composite electrode is also higher (7.0%) than that of GF (4.8%). The composite electrode was demonstrated to lower polarization and increase the reversibility toward the VO2+/VO(2)(+)redox couple according to the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements. The charge-discharge cycling test was conducted with a single VRFB cell. The results indicate that the cell with composite electrode presents higher charge-discharge capacity, larger electrolyte utilization efficiency (EU), and higher energy conversion efficiency (79.1%) compared with that using GF electrode. The increasing electrochemical performances of composite electrodes are mainly ascribed to the high electrochemical activity of activated charcoal particles and increasing superficial area.

关键词Vanadium Redox Flow Battery Composite Electrode Material Activated Charcoal Particles Pyrolytic Carbon Reversibility
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1115/1.4037532
收录类别SCI
语种英语
关键词[WOS]COMPOSITE ELECTRODES ; ELECTROCHEMICAL-BEHAVIOR ; CARBON NANOTUBE ; CELL ; PERFORMANCE ; VO2+/VO2+ ; IMPEDANCE ; GRAPHENE ; CATALYST ; HYBRID
WOS研究方向Electrochemistry ; Energy & Fuels
WOS类目Electrochemistry ; Energy & Fuels
项目资助者National Natural Science Foundation of China(51504231 ; Open Project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization(CNMRCUKF1704) ; 51504232 ; 21325628)
WOS记录号WOS:000415121300004
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23408
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Yang, Haitao,Fan, Chuanlin,Zhu, Qingshan. Activated Charcoal Modified Graphite Felts Using for Positive Electrodes of Vanadium Redox Flow Battery[J]. JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE,2017,14(4):041004.
APA Yang, Haitao,Fan, Chuanlin,&Zhu, Qingshan.(2017).Activated Charcoal Modified Graphite Felts Using for Positive Electrodes of Vanadium Redox Flow Battery.JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE,14(4),041004.
MLA Yang, Haitao,et al."Activated Charcoal Modified Graphite Felts Using for Positive Electrodes of Vanadium Redox Flow Battery".JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE 14.4(2017):041004.
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