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题名: A comparative study of carbon felt and activated carbon based electrodes for sodium polysulfide/bromine redox flow battery
作者: Zhou, Hantao;  Zhang, Huamin;  Zhao, Ping;  Yi, Baolian
通讯作者: 张华民
关键词: polysulfide/bromine battery ;  carbon felt ;  activated carbon ;  structure-performance relationship ;  energy efficiency
刊名: ELECTROCHIMICA ACTA
发表日期: 2006-09-15
DOI: 10.1016/j.electacta.2006.03.106
卷: 51, 期:28, 页:6304-6312
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 303
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: Carbon felt (CF) and activated carbon (AC) based electrodes for sodium polysulfidelbromine redox flow battery (PSB) were prepared and compared with a laboratory scale PSB flow cell in terms of structure and application performances. The structural properties of the two types of electrodes were characterized by filamentary analog and BET analysis, respectively. Catalyst coating, discharge behavior analysis and thermogravimetric analysis-mass spectrometry (TG-MS) were carried out to make out the different dominant factor in the application performances of the two materials. Compared to AC based electrode (ACE), despite of the relatively low surface area, CF demonstrates almost the same application performances, much more gains in electrochemical activity towards negative half-cell reactions by catalyst coating, and more even discharge voltage curve and stable cycling performance. At current density of 40 mA cm(-2), an average energy efficiency of up to 81% over 50 cycles (about 600 h) has been achieved with cobalt coated CF, but with ACE only 64.7% within 16 cycles, which decreases quickly due to the loss of surface area resulted from sulfur depositing. The difference in structure related to mass transport makes the application performances gap between the two types of materials in PSB. (c) 2006 Elsevier Ltd. All rights reserved.
关键词[WOS]: MASS-TRANSFER ;  PLATINUM-ELECTRODE ;  HYDROSULFIDE IONS ;  FIBER ELECTRODES ;  PERFORMANCE ;  BEHAVIOR ;  KINETICS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000240855100011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97251
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhou, Hantao,Zhang, Huamin,Zhao, Ping,et al. A comparative study of carbon felt and activated carbon based electrodes for sodium polysulfide/bromine redox flow battery[J]. ELECTROCHIMICA ACTA,2006,51(28):6304-6312.
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