Fuel cell performances at optimized Nafion and Ru85Se 15 loadings in cathode catalyst layer

CORC > 厦门大学 > 材料学院－已发表论文

	Fuel cell performances at optimized Nafion and Ru85Se 15 loadings in cathode catalyst layer
	Zheng, Qiaoming ; Cheng, Xu ; Jao, Ting-Chu ; Weng, Fang-Bo ; Su, Ay ; Chiang, Yu-C ; Cheng X(程璇)
刊名	http://dx.doi.org/10.1016/j.jpowsour.2011.11.011
	2012
关键词	Catalysts Cathodes Citric acid Electrochemical electrodes Fuel cells Gas fuel purification Optimization Ruthenium Scanning electron microscopy Selenium Ultrasonic testing
英文摘要	The citric acid treated carbon supported Ru85Se15 catalysts are synthesized by microwave assisted polyol method at the optimal solution pH = 7. The catalyst coated membrane method with ultrasonic-spray technique is employed to prepare electrodes without hot press step. The cell performances with different Nafion contents and Ru loads in the cathode catalyst layer are systematically examined in both H2/air and H 2/O2 fuel cells at 65 掳C under ambient pressure. The surface morphologies of membrane electrode assemblies and the interfacial characteristics of single cells are studied using scanning electron microscopy and electrochemical impedance spectroscopy, respectively. The Nafion content is optimized to be 33% when the catalyst loadings are lower than 0.8 and 0.6 mg Ru cm-2 in the H2/air and H2/O2 fuel cells, respectively, but reduced to 20% at the higher Ru loads. The maximum peak power densities of 190 mW cm-2 at 620 mA cm-2 and 400 mW cm-2 at 1430 mA cm-2 are achieved in the H2/air and H2/O2 fuel cells, respectively, with 0.27 mg Ru cm-2 and 33% Nafion. The best catalyst utilizations are obtained at 0.14 mg Ru cm-2 with 33% Nafion, resulting in the maximum peak power densities per unit mass Ru of 917 and 2460 mW mg-1 in the H 2/air and H2/O2 fuel cells, respectively. 漏 2011 Published by Elsevier B.V. All rights reserved.
语种	英语
出版者	Elsevier
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87384]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Zheng, Qiaoming,Cheng, Xu,Jao, Ting-Chu,et al. Fuel cell performances at optimized Nafion and Ru85Se 15 loadings in cathode catalyst layer[J]. http://dx.doi.org/10.1016/j.jpowsour.2011.11.011,2012.
APA	Zheng, Qiaoming.,Cheng, Xu.,Jao, Ting-Chu.,Weng, Fang-Bo.,Su, Ay.,...&程璇.(2012).Fuel cell performances at optimized Nafion and Ru85Se 15 loadings in cathode catalyst layer.http://dx.doi.org/10.1016/j.jpowsour.2011.11.011.
MLA	Zheng, Qiaoming,et al."Fuel cell performances at optimized Nafion and Ru85Se 15 loadings in cathode catalyst layer".http://dx.doi.org/10.1016/j.jpowsour.2011.11.011 (2012).