Enhanced dehydrogenation performance of LiBH4 by confinement in porous NiMnO3 microspheres

被引：15
作者：
Xu, Xiaohong [2 ]
Zang, Lei [2 ]
Zhao, Yaran [2 ]
Liu, Yongchang [1 ,2 ]
Wang, Yijing [2 ]
Jiao, Lifang [2 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
[2] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem MOE, Tianjin 300071, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 41期
基金：
中国国家自然科学基金;
关键词：
LiBH4; Nanoconfinement; Synergistic; Destabilization; Porous NiMnO3 nanoparticles; Hydrogen release; HYDROGEN STORAGE PROPERTIES; METAL-ORGANIC FRAMEWORK; CARBON; DESORPTION; NANOCONFINEMENT; RELEASE; CATALYSIS; KINETICS; NI; LIBH4-MG(BH4)(2);
D O I：
10.1016/j.ijhydene.2017.08.088
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The dehydrogenation behavior of LiBH4 has been investigated when confined into porous NiMnO3 microsphere via a wet chemical impregnation method. The confinement of LiBH4 in the pores of NiMnO3 nanoparticles leads to a significant decrease of the onset and the maximum desorption temperatures. The composites begin to release hydrogen at 150 degrees C and the maximum desorption temperature is 300 degrees C, which are much lower compared to the raw LiBH4. Also, the hydrogen release amount is found to be increased. Moreover, the LiBH4@NiMnO3 composites exhibit excellent dehydrogenation kinetics, with 2.8 wt% hydrogen released in 1 h at 300 degrees C. X-ray diffraction and Fourier transform infrared spectroscopy are used to deduce the desorption mechanism of NiMnO3. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：25824 / 25830
页数：7
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