Electrical, mechanical and morphological properties of compressed carbon felt electrodes in vanadium redox flow battery

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题名:	Electrical, mechanical and morphological properties of compressed carbon felt electrodes in vanadium redox flow battery
作者:	傅尹坤;Chang, Tien-Chan;Zhang, Jun-Pu;Fuh, Yiin-Kuen
贡献者:	工學院機械工程學系
关键词:	Applied sciences;Carbon;Clamping;Compressing;Contact resistance;Direct energy conversion and energy accumulation;Electric batteries;Electrical engineering. Electrical power engineering;Electrical power engineering;Electrochemical conversion: primary and secondary batteries, fuel cells;Electrodes;Exact sciences and technology;Intrusion;Vanadium
日期:	2014-01-01
上传时间:	2026-04-23 15:06:02 (UTC+8)
出版者:	Elsevier;Amsterdam: Elsevier BV
摘要:	摘要： Experiments including electrical, mechanical and morphological aspects under compression in the range of 0a40% have been carried out on four potential materials for liquid diffusion layer (LDL) of vanadium redox flow battery (VRB) (including three widely used carbon felt and one recently utilized metal foam) in order to better understand the influence of the fundamental properties on the battery performance. We experimentally demonstrate that the electrical contact resistance is predominately determined by the clamping force. It is observed that increasing the stress applied on the carbon felt, which is of high interest for the durability of the membrane electrode assembly (MEA), has moreover a positive effect on their performance due to the reduced contact resistance. However, a simultaneously reduced porosity is also recorded and possibly detrimental to the mass transport of vanadium electrolyte. Moreover, the intrusion of carbon felts under compression is also characterized. Experimental results show that with the clamping force increases, both the porosity of the carbon felts underneath the rib and channel volume decrease, and this can be mainly attributed to the deformation of the carbon felts and resultant changed of the void volume as well as intrusion. 出版者： Amsterdam: Elsevier BV 出版日期： 2014-01 出處： Journal of Power Sources, 2014-01, Vol.245, p.66-75 資源來源： Elsevier ScienceDirect Journals AutoHoldings 版權： 2015 INIST-CNRS 識別號： ISSN: 0378-7753 識別號： DOI: 10.1016/j.jpowsour.2013.06.018 識別號： CODEN: JPSODZ
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