Conductive and corrosion behaviors of silver-doped carbon-coated stainless steel as PEMFC bipolar plates

被引:15
作者
Liu, Ming [1 ]
Xu, Hong-feng [1 ]
Fu, Jie [1 ]
Tian, Ying [1 ]
机构
[1] Dalian Jiaotong Univ, Coll Environm & Chem Engn, Dalian 116028, Peoples R China
基金
中国国家自然科学基金;
关键词
proton exchange membrane fuel cells; bipolar plates; stainless steel; silver; carbon; spraying; corrosion; SIMULATED ANODE; FILM;
D O I
10.1007/s12613-016-1299-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ni-Cr enrichment on stainless steel SS316L resulting from chemical activation enabled the deposition of carbon by spraying a stable suspension of carbon nanoparticles; trace Ag was deposited in situ to prepare a thin continuous Ag-doped carbon film on a porous carbon-coated SS316L substrate. The corrosion resistance of this film in 0.5 mol center dot L-1 H2SO4 solution containing 5 ppm F- at 80A degrees C was investigated using polarization tests. The results showed that the surface treatment of the SS316L strongly affected the adhesion of the carbon coating to the stainless steel. Compared to the bare SS316L, the Ag-doped carbon-coated SS316L bipolar plate was remarkably more stable in both the anode and cathode environments of proton exchange membrane fuel cell (PEMFC) and the interface contact resistance between the specimen and Toray 060 carbon paper was reduced from 333.0 m Omega A center dot cm(2) to 21.6 m Omega A center dot cm(2) at a compaction pressure of 1.2 MPa.
引用
收藏
页码:844 / 849
页数:6
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