LiAlH4 as a Microlighter on the Fluorographite Surface Triggering the Dehydrogenation of Mg(BH4)(2): Toward More than 7 wt % Hydrogen Release below 70 degrees C
作者:Zheng, JG (Zheng, Jiaguang)[ 1 ] ; Cheng, H (Cheng, Hao)[ 1 ] ; Wang, XC (Wang, Xuancheng)[ 1 ] ; Chen, M (Chen, Man)[ 1 ] ; Xiao, XZ (Xiao, Xuezhang)[ 1,2,3 ] ; Chen, LX (Chen, Lixin)[ 2 ]
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ACS APPLIED ENERGY MATERIALS
卷: 3 期: 3 页: 3033-3041
DOI: 10.1021/acsaem.0c00134
出版年: MAR 23 2020
文献类型:Article
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摘要
Mg(BH4)(2) is one of the most promising hydrides for hydrogen storage. Herein, the dehydrogenation properties of Mg(BH4)(2) are significantly improved by LiAlH4 and fluorographite (FGi) addition. The metathesis reaction between Mg(BH4)(2) and LiAlH4 has been strongly hindered by FGi, and a novel chocolate cookie structure is observed that Mg(BH4)(2) and LiAlH4 particles scatter uniformly on the FGi surface. An unexpected hydrogen desorption capacity of 7.12 wt % is discovered in the Mg(BH4)(2)LiAlH4-30FGi composite at a temperature as low as 68.2 degrees C. More encouragingly, the rapid dehydrogenation process can be fully accomplished in seconds, indicating an ultrafast hydrogen desorption kinetic behavior. Further investigations find that the remarkably enhanced dehydrogenation behavior is attributed to the interaction between FGi and the two hydrides, which greatly reduces the enthalpy change of the dehydrogenation reaction. This investigation reveals that the LiAlH4 can act as a microlighter to trigger the dehydrogenation of Mg(BH4)(2) at low temperature.
关键词
作者关键词:Mg(BH4)(2); LiAlH4; fluorographite; dehydrogenation; reactant destabilization
KeyWords Plus:STORAGE PROPERTIES; COMPLEX HYDRIDES; DESORPTION; KINETICS; NANOPARTICLES; ENHANCEMENT; BOROHYDRIDE; STABILITY; COMPOSITE
作者信息
通讯作者地址: Xiao, XZ (通讯作者)
显示更多Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China.
通讯作者地址: Xiao, XZ (通讯作者)
Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310013, Peoples R China.
通讯作者地址: Xiao, XZ (通讯作者)
显示更多South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.
地址:
显示更多[ 1 ] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[ 2 ] Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310013, Peoples R China
显示更多[ 3 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址:xzxiao@zju.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Key R&D Program of China
2018YFB1502104
National Natural Science Foundation of China
51671173
Open Fund of the Guangdong Provincial Key Laboratory of Advance Energy Storage Materials
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出版商
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Energy & Fuels; Materials Science
Web of Science 类别:Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary