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虎门体育官方登录入口网:标题

Enhanced Hydrogen Generation Properties of MgH2-Based Hydrides by Breaking the Magnesium Hydroxide Passivation Layer

虎门体育官方登录入口网:作者

作者:Ouyang, LZ (Ouyang, Liuzhang)^[1,2,3 ]; Ma, ML (Ma, Miaolian)^[1,2 ]; Huang, MH (Huang, Minghong)^[1,2 ]; Duan, RM (Duan, Ruoming)^[1,2 ]; Wang, H (Wang, Hui)^[1,2,3 ]; Sun, LX (Sun, Lixian)^[4 ]; Zhu, M (Zhu, Min)^[1,2,3 ]

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

Due to its relatively low cost, high hydrogen yield, and environmentally friendly hydrolysis byproducts, magnesium hydride (MgH2) appears to be an attractive candidate for hydrogen generation. However, the hydrolysis reaction of MgH2 is rapidly inhibited by the formation of a magnesium hydroxide passivation layer. To improve the hydrolysis properties of MgH2-based hydrides we investigated three different approaches: ball milling, synthesis of MgH2-based composites, and tuning of the solution composition. We demonstrate that the formation of a composite system, such as the MgH2/LaH3 composite, through ball milling and in situ synthesis, can improve the hydrolysis properties of MgH2 in pure water. Furthermore, the addition of Ni to the MgH2/LaH3 composite resulted in the synthesis of LaH3/MgH2/Ni composites. The LaH3/MgH2/Ni composites exhibited a higher hydrolysis rate120 mL/(gmin) of H-2 in the first 5 minthan the MgH2/LaH3 composite95 mL/(gmin)without the formation of the magnesium hydroxide passivation layer. Moreover, the yield rate was controlled by manipulation of the particle size via ball milling. The hydrolysis of MgH2 was also improved by optimizing the solution. The MgH2 produced 1711.2 mL/g of H-2 in 10 min at 298 K in the 27.1% ammonium chloride solution, and the hydrolytic conversion rate reached the value of 99.5%.

虎门体育官方登录入口网:关键词

作者关键词:MgH2-based hydride; hydrolysis; hydrogen generation; composites

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 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 ] 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
	[ 3 ] S China Univ Technol, China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 4 ] Guangxi Collaborat Innovat Ctr Struct & Property, Guilin 541004, Peoples R China

电子邮件地址:meouyang@scut.edu.cn; miaolianma@163.com; h.minghong@mail.scut.edu.cn; meduanrm@gmail.con; mehwang@scut.edu.cn; lxsun@dicp.ac.cn; memzhu@scut.edu.cn

虎门体育官方登录入口网:出版商

MDPI AG, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND

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