Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells

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	Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells
	Y. J. Ren; C. L. Zeng
	2008
发表期刊	Journal of Power Sources
ISSN	0378-7753
卷号	182 期号:2 页码:524-530
摘要	A bilayer conducting polymer coating composed of an inner layer of polypyrrole (Ppy) with large dode-cylsulfate ionic groups obtained by galvanostatic deposition, and an external polyaniline (Pani) layer with Small SO42- groups obtained by cyclic voltammetric deposition was prepared to protect type 304 stainless steel used for bipolar plates of a proton-exchange membrane fuel cell. The corrosion performance of the bare and coated steel in 0.3 M HCl was examined by electrochemical impedance spectroscopy, polarization and open-circuit potential measurements. The experimental results indicated that both the composite Ppy/Pani coatings and the single Ppy coatings increased the corrosion potential of the bare steel by more than 400mV (saturated calomel electrode), and increased the pitting corrosion potential by more than 500 mV (saturated calomel electrode). The bilayer coatings could reduce the corrosion of the alloy much more effectively than the single Ppy coatings, serving as a physical barrier and providing passivity protection, with acceptable contact resistance. (c) 2008 Elsevier B.V. All rights reserved.
部门归属	[ren, y. j.; zeng, c. l.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;zeng, cl (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;clzeng@imr.ac.cn
关键词	Pemfc Stainless Steel Bipolar Plates Bilayer Conducting Polypyrrole/polyaniline Coatings Hcl Solution Corrosion Electrical Contact Resistance Coated Stainless-steel Polypyrrole Coatings Mild-steel Protection Behavior Pemfc Films Iron
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WOS记录号	WOS:000257599500018
引用统计	被引频次：94[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33063
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Ren,C. L. Zeng. Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells[J]. Journal of Power Sources,2008,182(2):524-530.
APA	Y. J. Ren,&C. L. Zeng.(2008).Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells.Journal of Power Sources,182(2),524-530.
MLA	Y. J. Ren,et al."Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells".Journal of Power Sources 182.2(2008):524-530.