期刊
JOURNAL OF POWER SOURCES
卷 311, 期 -, 页码 153-158出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.01.100
关键词
Backing layer; MPL; PEM electrolyzer; PEM electrolysis; Current collector; Titanium
资金
- German BMWi [0325440A]
Current energy policies require the urgent replacement of fossil energy carriers by carbon neutral ones, such as hydrogen. The backing or micro-porous layer plays an important role in the performance of hydrogen proton exchange membrane (PEM) fuel cells, reducing contact resistance and improving reactant/product management. Such carbon-based coating cannot be used in PEM electrolysis since it oxidizes to CO2 at high voltages. A functional titanium macro-porous layer (MPL) on the current collectors of a PEM electrolyzer is developed by thermal spraying. It improves the contact with the catalyst layers by ca. 20 m Omega cm(2), increasing significantly the efficiency of the device when operating at high current densities. (C) 2016 Elsevier B.V. All rights reserved.
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