Promoted hydrogen release from 3LiBH(4)/MnF2 composite by doping LiNH2: Elimination of diborane release and reduction of decomposition temperature

作者：Song, Yun; Fang, Fang; Li, Yongtao; Zhao, Qiyang; Sun, Dalin^*; Zhang, Qingan; Ouyang, Liuzhang; Zhu, Min

来源：International Journal of Hydrogen Energy, 2012, 37(23): 18074-18079.

DOI：10.1016/j.ijhydene.2012.09.029

• Hydrogen storage
• Transition metal borohydride
• Doping
• Decomposition

The evolution of diborane accompanying H-2 release during the decomposition of transition metal borohydrides reduces the purity of evolved hydrogen and results in capacity loss during cycling. To solve the problem, a small amount of LiNH2 is doped into a 3LiBH(4)/MnF2 composite and the decomposition properties are investigated. The results show that after doping LiNH2, the formation of diborane during decomposition is effectively suppressed meanwhile the decomposition temperature is significantly reduced. Around 5 wt.% pure hydrogen can be released at 95-140 degrees C from 5 wt.% LiNH2-doped 3LiBH(4)/MnF2 composite. These improvements in the decomposition performance are mainly attributed to the prevention of the formation of B-H-B bonds

• 出版日期2012-12
• 单位复旦大学; 华南理工大学; 安徽工业大学