Coated Stainless Steel Bipolar Plates for Proton Exchange Membrane Electrolyzers

被引：85

作者：

Lettenmeier, P. ^{[1
]}

Wang, R. ^{[2
]}

Abouatallah, R. ^{[2
]}

Burggraf, F. ^{[1
]}

Gago, A. S. ^{[1
]}

Friedrich, K. A. ^{[1
,3
]}

机构：

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

[2] Hydrogenics Corp, Mississauga, ON L5T 2N6, Canada

[3] Univ Stuttgart, Inst Energy Storage, D-70550 Stuttgart, Germany

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 11期

关键词：

SPE WATER ELECTROLYSIS; HYDROGEN EMBRITTLEMENT; TITANIUM COATINGS; FUEL-CELLS; LOW-COST; CORROSION; PERFORMANCE; SYSTEM; DURABILITY; RESISTANCE;

D O I：

10.1149/2.0141611jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Given its rapid response to fluctuating currents and wide operation range, proton exchange membrane (PEM) water electrolysis is utmost suitable for generation of hydrogen from renewable power. However, it is still hindered by the high cost of the stack components compared to those used in the alkaline technology. In particular, the titanium bipolar plates (BPP) are an issue and the replacement of this metal by stainless steel is a challenge, due to the highly corrosive environment inside PEM electrolyzer stack. Herein, we coat stainless steel BPPs with 50-60 mu m Ti and 1.5 mu m Pt coatings by vacuum plasma spraying (VPS) and magnetron sputtering physical vapor deposition (PVD), respectively. The BPPs are evaluated at constant 1 A cm(-2) for more than 1000 h. The thermally sprayed Ti coatings fully protect the stainless steel substrate during this period of time, and the Pt surface modification allows achieving a cell performance comparable to the baseline. (C) 2016 The Electrochemical Society. All rights reserved.

引用

页码：F3119 / F3124

页数：6

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