A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell

doi:10.1016/j.jpowsour.2018.03.037

GIEC OpenIR

	A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell
	Wei, Lin 1; Yuan, Xianxia 2; Jiang, Fangming1
	2018-05-01
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	385 页码:130-140
通讯作者	Jiang, Fangming(fm_jiang2000@yahoo.com)
摘要	In the membraneless direct methanol redox fuel cell (DMRFC), three-dimensional electrodes contribute to the reduction of methanol crossover and the open separator design lowers the system cost and extends its service life. In order to better understand the mechanisms of this configuration and further optimize its performance, the development of a three-dimensional numerical model is reported in this work. The governing equations of the multi-physics field are solved based on computational fluid dynamics methodology, and the influence of the CO2 gas is taken into consideration through the effective diffusivities. The numerical results are in good agreement with experimental data, and the deviation observed for cases of large current density may be related to the single-phase assumption made. The three-dimensional electrode is found to be effective in controlling methanol crossover in its multi-layer structure, while it also increases the flow resistance for the discharging products. It is found that the current density distribution is affected by both the electronic conductivity and the concentration of reactants, and the temperature rise can be primarily attributed to the current density distribution. The sensitivity and reliability of the model are analyzed through the investigation of the effects of cell parameters, including porosity values of gas diffusion layers and catalyst layers, methanol concentration and CO2 volume fraction, on the polarization characteristics.
关键词	Direct methanol fuel cell Redox couple Membraneless Fuel cell modeling
DOI	10.1016/j.jpowsour.2018.03.037
关键词[WOS]	FEED DIRECT METHANOL ; FLOWING-ELECTROLYTE ; WATER TRANSPORT ; OPERATION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21476138] ; National Natural Science Foundation of China[21776176] ; Natural Science Foundation of Guangdong Province[2017A000310186] ; Natural Science Foundation of Guangdong Province[2015A030308019] ; Natural Science Foundation of Guangdong Province[2016A030313172]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000430779400016
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/23393
专题	中国科学院广州能源研究所
通讯作者	Jiang, Fangming
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Shanghai Jiao Tong Univ, Dept Chem Engn, Shanghai 200240, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wei, Lin,Yuan, Xianxia,Jiang, Fangming. A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell[J]. JOURNAL OF POWER SOURCES,2018,385:130-140.
APA	Wei, Lin,Yuan, Xianxia,&Jiang, Fangming.(2018).A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell.JOURNAL OF POWER SOURCES,385,130-140.
MLA	Wei, Lin,et al."A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell".JOURNAL OF POWER SOURCES 385(2018):130-140.