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

doi:10.1016/j.jpowsour.2018.03.037

	A three-dimensional non-isothermal model for a membraneless direct methanol redox fuel cell
	Wei, Lin 2; Yuan, Xianxia 1; Jiang, Fangming 2
刊名	JOURNAL OF POWER SOURCES
	2018-05-01
卷号	385 页码:130-140
关键词	Direct methanol fuel cell Redox couple Membraneless Fuel cell modeling
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2018.03.037
通讯作者	Jiang, Fangming(fm_jiang2000@yahoo.com)
英文摘要	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.
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关键词	FEED DIRECT METHANOL ; FLOWING-ELECTROLYTE ; WATER TRANSPORT ; OPERATION
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000430779400016
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/23392]
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.Shanghai Jiao Tong Univ, Dept Chem Engn, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
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.