Structural characteristics and hydrogen storage properties of Sm2Co7

标题

Structural characteristics and hydrogen storage properties of Sm2Co7

作者

作者:Cao, ZJ (Cao, Z. J.)^[1,4 ]; Ouyang, LZ (Ouyang, L. Z.)^[1,4 ]; Wang, H (Wang, H.)^[1,4 ]; Liu, JW (Liu, J. W.)^[1,4 ]; Sun, DL (Sun, D. L.)^[2,4 ]; Zhang, QA (Zhang, Q. A.)^[3,4 ]; Zhu, M (Zhu, M.)^[1,4 ]

期刊信息

摘要

The structural characteristics and hydrogen-storage properties of the Ce2Ni7-type compound Sm2Co7 have been investigated for the first time. This alloy transforms to the beta phase and then the c phase upon hydrogenation. These two phases have been identified as Sm2Co7H2.9 and Sm2Co7H6.4, and their dehydrogenation enthalpies have been measured as 48.5 and 42.0 kJ/mol H-2, respectively. Sm2Co7 shows excellent stability without obvious capacity loss after 50 cycles, and its hydrogenation process follows a three-dimensional-interface-controlled reaction at ambient temperature. (C) 2014 Elsevier B.V. All rights reserved.

关键词

作者关键词:Hydrogen storage; Sm2Co7; Thermodynamics; Kinetics

作者信息

作者信息

通讯作者地址:Ouyang, LZ (通讯作者)

S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China   增强组织信息的名称     Fudan University
	[ 3 ] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Anhui, Peoples R China   增强组织信息的名称     Anhui University of Technology
	[ 4 ] S China Univ Technol, 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; memzhu@scut.edu.cn

出版商

ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND

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