Lithium aluminum hydride Li3AlH6: new insight into the anode material for liquid-state lithium-ion batteries
Chu Liang,
Zhangze Ye,
Yaxiong Yang,
Huilong Jing,
Haihuang Wu,
Yanxia Liu,
Xiaoyu Zhang,
Zhihe Liu,
Hongge Pan
Affiliations
Chu Liang
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China; School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Corresponding author. Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China.
Zhangze Ye
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China
Yaxiong Yang
Institute of Science and Technology for New Energy Xi'an Technological University Xi'an 710021, China
Huilong Jing
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China
Haihuang Wu
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China
Yanxia Liu
Institute of Science and Technology for New Energy Xi'an Technological University Xi'an 710021, China
Xiaoyu Zhang
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China; Corresponding author. Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute at Deqing, Zhejiang University of Technology, Hangzhou 310014, China.
Zhihe Liu
Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4, Singapore 117585, Singapore
Hongge Pan
Zhejiang Carbon Neutral Innovation Institute & Moganshan Institute of ZJUT at Deqing, Zhejiang University of Technology, Hangzhou 310014, China; Institute of Science and Technology for New Energy Xi'an Technological University Xi'an 710021, China; School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
Metal hydrides have been demonstrated as one of the promising high-capacity anode materials for Li-ion batteries. Herein, we report the electrochemical properties and lithium storage mechanism of a Li-rich complex metal hydride (Li3AlH6). Li3AlH6 exhibits a lithiation capacity of ∼1729 mAh/g with a plateau potential of ∼0.33 V vs. Li+/Li at the first discharge cycle. Experimental results demonstrate that Li3AlH6 is converted into LiH and LiAl in the initial electrochemical lithiation process. In addition, Li3AlH6 also possesses a good cycling stability that 71 % of the second discharge capacity is retained after 20 cycles. More importantly, the cycling performance of Li3AlH6 can be improved to 100 cycles via adjusting electrolyte composition. This study provides a new approach for developing the lithium storage properties of anode materials for Li-ion batteries.
