Nickel boride alloys as catalysts for successive hydrogen generation from sodium borohydride solution  

作　　者：吴川 白莹 吴锋 王国庆 

机构地区：[1]School of Chemical Engineering and the Environment,Beijing Institute of Technology [2]National Development Center for High Technology Green Materials,Beijing 100081,China

出　　处：《中国有色金属学会会刊：英文版》2007年第A02期1002-1005,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project (2002CB211800) supported by the National Basic Research Program of China;project (000Y05-21) supported by the Excellent Young Scholar Research Fund of Beijing Institute of Technology;project (20060542012) supported by the Teaching & Research Fund of Beijing Institute of Technology;project(20071D1600300396) supported by the Beijing Excellent Talent Support Program

摘　　要：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%.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 diffi＇actometry （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%.

关 键 词：质子交换膜燃料电池 产氢能力 镍硼合金 催化剂 

分 类 号：TG146.15[一般工业技术—材料科学与工程]