Towards developing a backing layer for proton exchange membrane electrolyzers

JOURNAL OF POWER SOURCES

卷:311

Article

Lettenmeier, P.¹  Kolb, S.¹  Burggraf, F.¹  Gago, A. S.¹  Friedrich, K. A.^1,2 

[1] German Aerosp Ctr, Inst Engn Thermodynam, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Energy Storage, Keplerstr 7, D-70174 Stuttgart, Germany

关键词: Backing layer;    MPL;    PEM electrolyzer;    PEM electrolysis;    Current collector;    Titanium;   

DOI  :  10.1016/j.jpowsour.2016.01.100

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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