Behaviors of a proton exchange membrane electrolyzer under water starvation

	Behaviors of a proton exchange membrane electrolyzer under water starvation
	Sun, Shucheng 1,2; Xiao, Yu 1; Liang, Dong 3; Shao, Zhigang 1; Yu, Hongmei 1; Hou, Ming 1; Yi, Baolian 1
刊名	rsc advances
	2015
卷号	5 期号:19 页码:14506-14513
英文摘要	water starvation could be one of the reasons for proton exchange membrane (pem) water electrolyzer degradation. in this paper, the water starvation phenomena of a unit cell in a pem electrolyzer stack are investigated. the voltage, current density and temperature distribution are investigated in situ with a segmented electrolyzer. the results show that the voltage of the middle and outlet regions is higher than the inlet voltage, which illustrates that water starvation could occur simultaneously in different regions of the electrolyzer. the water stoichiometries have an important effect on the voltage distribution, current density distribution and temperature distribution at 0.5 a cm(-2) and 60 degrees c. the electrochemical impedance spectra of different segments show that the cell resistance and charge transfer resistance gradually increase along the water flow direction when the water stoichiometry is 3. according to the flow regime map, the critical water stoichiometry for electrolysis is further discussed.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	oxygen evolution reaction ; pem fuel-cell ; sodium-ion ; polymer ; degradation ; transport ; electrocatalysts ; reversal
收录类别	SCI
语种	英语
WOS记录号	WOS:000349434600054
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145930]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Sunrise Power Co Ltd, Dalian 116025, Peoples R China
推荐引用方式 GB/T 7714	Sun, Shucheng,Xiao, Yu,Liang, Dong,et al. Behaviors of a proton exchange membrane electrolyzer under water starvation[J]. rsc advances,2015,5(19):14506-14513.
APA	Sun, Shucheng.,Xiao, Yu.,Liang, Dong.,Shao, Zhigang.,Yu, Hongmei.,...&Yi, Baolian.(2015).Behaviors of a proton exchange membrane electrolyzer under water starvation.rsc advances,5(19),14506-14513.
MLA	Sun, Shucheng,et al."Behaviors of a proton exchange membrane electrolyzer under water starvation".rsc advances 5.19(2015):14506-14513.