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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Nickel boride alloys as catalysts for successive hydrogen generation from sodium borohydride solution
WU Chuan(吴  川)1, 2, BAI Ying(白  莹)1, 2, WU Feng(吴  锋)1, 2, WANG Guo-qing(王国庆)1, 2

1. School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China;
2. National Development Center for High Technology Green Materials, Beijing 100081, China

Abstract:Nickel boride alloys, Ni-B, were prepared using chemical reduction method by the reaction of metal chloride with sodium borohydride, and heat-treated at various temperatures. The structures of the as-prepared alloys were studied using X-ray diffractometry (XRD), scanning electronic microscopy (SEM) and nitrogen adsorption-desorption analysis. When being adopted as the catalysts for successive hydrogen generation from sodium borohydride solution, the Ni-B alloy treated at 90 ℃ achieves a maximum hydrogen generation rate of 15.4 L/(min∙g), and an average hydrogen generation rate of 13.6 L/min, which can give successive hydrogen supply to a 2.2 kW PEMFC at a hydrogen utilization of 100%.

 

Key words: proton exchange membrane fuel cell; hydrogen generation; Ni-B alloy; catalyst

ISSN 1672-7029
CN 43-1423/U

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