Catalytic effect of ScCl3 on the dehydrogenation properties of LiAlH4

作者:Cao, ZJ (Cao, Zhijie)^[1 ]; Ma, XB (Ma, Xiaobo)^[1 ]; Wang, HL (Wang, Hailong)^[1 ]; Ouyang, LZ (Ouyang, Liuzhang)^[2 ]

(T)he dehydrogenation properties and catalytic mechanism of ScCl3-doped LiAlH4 have been studied in detail. After milling for 10 min, hydrogen evolution from 5 mol% ScCl3-doped LiAlH4 starts at similar to 90 degrees C, superior than that of raw LiAlH4 (similar to 144 degrees C) and as-milled LiAlH4 (similar to 124 degrees C). Moreover, this composite can release a hydrogen capacity of 3.6 wt% within 180 min at 150 degrees C, much higher than that of as-received LiAlH4 (1.8 wt% H-2) and as-milled LiAlH4 (2.8 wt% H-2) under the same condition. Results show that the catalytic effect of ScCl3 comes from the reaction product ScH2 between LiAlH4 and ScCl3, which can act as the catalyst for facilitating the dehydrogenation of LiAlH4. (C) 2018 Elsevier B.V. All rights reserved.

作者关键词:Hydrogen storage; Complex hydrides; LiAlH4; Kinetics

KeyWords Plus:HYDROGEN STORAGE PROPERTIES; TI-DOPED LIALH4; THERMAL-DECOMPOSITION; ALUMINUM HYDRIDES; NANOPARTICLES; PERFORMANCE; DESORPTION; ADDITIVES; NANOPOWDER; COMPOSITE

通讯作者地址:Ouyang, LZ (通讯作者)

South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] Ningxia Univ, Sch Phys & Elect Elect Engn, Adv Energy Storage Mat & Devices Lab, Yinchuan 750021, Peoples R China   增强组织信息的名称     Ningxia University
	[ 2 ] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology

电子邮件地址:meouyang@scut.edu.cn

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