Electrochemical Characteristics of LaNi4.5Al0.5 Alloy Used as Anodic Catalyst in a Direct Borohydride Fuel Cell

J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (1): 46-50.

• Materials for Sustainable Energy • Previous Articles Next Articles

Electrochemical Characteristics of LaNi^_4.5Al_0.5 Alloy Used as Anodic Catalyst in a Direct Borohydride Fuel Cell

Lianbang Wang, Guobin Wu, Zhenzhen Yang, Yunfang Gao, Xinbiao Mao, Chun'an May

State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China

Received:2008-10-14 Revised:2010-01-05 Online:2011-01-28 Published:2011-01-30
Contact: Lianbang Wang
Supported by:
the Zhejiang Natural Science Foundation (Nos. Y405496 and 2008C14040), and the National Fundamental Research \973" Prophase Project (2007CB216409).

Abstract

Abstract: Fuel cells using borohydride as the fuel have received much attention because of high energy density and theoretical working potential. In this work, LaNi^_4.5Al_0.5 hydrogen storage alloy used as the anodic material has been investigated. It was found that the increasing operation temperature was helpful to the open-circuit potential, the discharge potential and the power density, but showed a negative effect on the utilization of the fuel due to the accelerated hydrogen evolution. The high KOH concentration was favorable for high-rate discharge capability. The adsorption and transformation of hydrogen on LaNi^_4.5Al_0.5 alloy electrode has been observed, but its contribution to the discharge capability during a high-rate discharge was small.

Key words: Fuel cell, Borohydride, Anodic catalyst, Hydrogen storage alloy

Lianbang Wang Guobin Wu Zhenzhen Yang Yunfang Gao Xinbiao Mao Chun'an May. Electrochemical Characteristics of LaNi^_4.5Al_0.5 Alloy Used as Anodic Catalyst in a Direct Borohydride Fuel Cell[J]. J Mater Sci Technol, 2011, 27(1): 46-50.

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Electrochemical Characteristics of LaNi^_4.5Al_0.5 Alloy Used as Anodic Catalyst in a Direct Borohydride Fuel Cell

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