High capacity and efficient dehydrogenation of aluminum hydride:Optimized by highly active TiN nanoparticles with low addition  

作　　者：Shaolei Zhao Qingyun Shi Long Liang Chunmin Zhang Qingshuang Wang Chunli Wang Ying Wang Pai Huang Limin Wang Yong Cheng 

机构地区：[1]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [2]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China [3]School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022,China

出　　处：《Nano Research》2025年第4期610-617,共8页纳米研究(英文版)

基　　金：the National Key Research and Development Program of China(No.2021YFB4000604);Special fund of Scientific and Technological Cooperation Program between Jilin Province and Chinese Academy of Sciences(No.2024SYHZ0030);Jilin Provincial Scientific and Technological Development Program(Nos.20200401039GX,2022021109GX,20230201140GX,and 20230201125GX);Tianjin Scientific and Technological Plan Project(No.23YFYSHZ00260);Youth Innovation Promotion Association CAS(No.2021225);Youth Growth Science and Technology Program of Jilin Province(No.20220508001RC).

摘　　要：Improving the dehydrogenation behavior of aluminum hydride(AlH3)by introducing additives provides a promising avenue in portable hydrogen source applications.However,the challenge remains in the development of highly active additives that facilitate hydrogen storage in composites while maintaining high capacity with a relatively small amount of additive.This work presents the successful synthesis of TiN nanoparticles by nitriding reaction using TiO_(2) as the precursor.The onset dehydrogenation temperature of AlH_(3) could be remarkably reduced to 52.9℃ on account of the catalytic effect of TiN nanoparticles.Furthermore,the composite exhibits a close approximation to the realistic capacity of pure aluminum hydride,with a maximum capacity of 9.9 wt.%.The notable decrease in the apparent dehydrogenation activation energy of AlH_(3) from 130.86 to 86.69 kJ·mol^(-1) after the incorporation of TiN substantiates the pivotal role of multivalent titanium and nitrogen.

关 键 词：aluminum hydride titanium nitride high capacity DEHYDROGENATION low addition 

分 类 号：O643.3[理学—物理化学]