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虎门体育官方登录入口网:标题

Fully Reversible De/hydriding of Mg Base Solid Solutions with Reduced Reaction Enthalpy and Enhanced Kinetics

虎门体育官方登录入口网:作者

作者:Wang, H (Wang, Hui)^[1 ]; Zhong, HC (Zhong, Haichang)^[2 ]; Ouyang, LZ (Ouyang, Liuzhang)^[1 ]; Liu, JW (Liu, Jiangwen)^[3 ]; Sun, DL (Sun, Dalin)^[4 ]; Zhang, QA (Zhang, Qingan)^[5 ]; Zhu, M (Zhu, Min)^[1 ]

虎门体育官方登录入口网:期刊信息

虎门体育官方登录入口网:摘要

This paper presents a new approach to tune the de/hydriciing thermodynamic properties of Mg via forming reversible Mg base solid solutions in the Mg-In and Mg-In-Al systems by mechanical milling. The effect of solubility of In and Al on the reversible formation of solid solution structure and hydrogen storage properties were investigated. It is found that although the solute atoms unavoidably are rejected upon hydriding, the hydrogenated products of MgH2 and intermediate Mg In compound could fully transform back to solid solution after dehydrogenation. In the hydricling of Mg(In, Al) ternary solid solution, Al would get dissolved into Mg In compound rather than forming free Al like the Mg(Al) binary solid solution. Therefore, the presence of In improves the dehydriding reversibility of Mg(Al) solid solution, and the reversible Al concentration could be increased up to the 8 at. %, which is just the solubility limit of Al in Mg by mechanical milling. The reversible phase transformation is responsible for the reduction in the desorption enthalpy of MgH2, being 12 kJ/(mol.H-2) reduction for the alloy Mg0.9In0.1 relative to the desorption enthalpy of pure MgH2. Further, the hydrogen sorption kinetics of Mg(In) solid solutions are enhanced. Comparatively, both the thermodynamic destabilizing effect and the kinetic enhancing effect due to the Al dissolving are inferior to those due to the In dissolving. This work demonstrates a feasible way to improve the thermodynamics and kinetics of Mg base hydrogen storage alloys through traditional metallurgical method.

虎门体育官方登录入口网:关键词

KeyWords Plus:HYDROGEN STORAGE PROPERTIES; RECENT PROGRESS; AL ALLOYS; MAGNESIUM; HYDRIDE; DESTABILIZATION; NANOPARTICLES; DESORPTION; BEHAVIOR; SORPTION

虎门体育官方登录入口网:作者信息

作者信息

通讯作者地址:Zhu, M (通讯作者)

S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, 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 510640, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] Xiamen Univ Technol, Dept Mat Sci & Engn, Xiamen 361024, Peoples R China   增强组织信息的名称     Xiamen University of Technology
	[ 3 ] Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China
	[ 4 ] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China   增强组织信息的名称     Fudan University
	[ 5 ] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China   增强组织信息的名称     Anhui University of Technology

电子邮件地址:memzhu@scut.edu.cn

虎门体育官方登录入口网:出版商

AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA

虎门体育官方登录入口网:类别分类