Co基合金催化NH3BH3/LiBH4水解制氢性能的研究  

Hydrogen generation by hydrolyzation of NH_3BH_3/LiBH_4 with cobalt-based catalyst

作　　者：亓卫东[1] 杨龙[1] 蔡荣[1] 孙立贤[1] 徐芬[1] 

机构地区：[1]广西信息材料重点实验室,广西新能源材料结构与性能协同创新中心,桂林电子科技大学材料科学与工程学院,广西桂林541004

出　　处：《电源技术》2016年第8期1609-1612,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(U1501242,51371060,51361005,21403267,21373215,51201042,51461010,51201041);广西自然科学基金(2014GXNSFDA118005,2014GXNSFAA118319,2015-GXNSFFA139002,2012GXNSFGA06002);广西信息材料重点实验室开放基金(1210908-217-Z,161002-Z)

摘　　要：使用Na BH_4还原金属盐制备非晶态纳米合金Co-Ni-W-B催化剂,改进NH_3BH_3/Li BH_4复合体系的室温水解放氢性能。使用物理吸附仪、XRD、SEM等对合金催化剂进行了表征。实验表明,通过Co-Ni-W-B的催化,NH_3BH_3/Li BH_4复合体系于室温条件下在10 min内完成放氢。当进一步加入Ni Cl_2,可使该体系在6 min内完成放氢。实验研究了复合催化剂的循环催化性能,并利用质谱仪对复合体系的催化放氢产物进行了检测,发现产物中只有氢气存在,可直接为燃料电池供氢。Co-Ni-W-B amorphous nano-alloy was synthesized via the reduction of saline by NaBH4 for the improvement of hydrolytic dehydrogenation of NH3BH/LiBH4 composites at room temperature. Alloy catalysts were characterized by BET, XRD and SEM. The experimental results show that through the catalytic Co-base alloy, the NH3BH/LiBH4 composite system completes its dehydrogenation within 10 min at room temperature. The system completes its dehydrogenation within 6 min by addition of NiCI2. The cyclic catalytic proper＇des of the composite catalyst were investigated. The gas produced by complex system was tested via a mass spectrometer, finding that only hydrogen is present. It is suitable for direct use of fuel cells.

关 键 词：NH3BH3 LiBH4 纳米非晶合金 制氢 

分 类 号：TM911.4[电气工程—电力电子与电力传动]