Highly reversible lithium metal batteries enabled by spontaneous alloying anode

被引:0
作者
Liu, Ying [1 ,2 ]
Lin, Li [1 ]
Sun, Yan [1 ]
Zhao, Jianxun [1 ]
Liu, Wanqiang [1 ]
Wang, Fang [1 ,3 ]
机构
[1] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Peoples R China
[2] Changchun Univ Sci & Technol, Chongqing Res Inst, Chongqing 400000, Peoples R China
[3] Changchun Univ Sci & Technol, Zhongshan Inst, Zhongshan 528437, Peoples R China
关键词
Lithium metal batteries; Dendrite; -free; Alloy; Lithiophilic site; Interconnected conductive pathway; ELECTROLYTE; DEPOSITION;
D O I
10.1016/j.jpcs.2024.111871
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Emerging lithium metal batteries are one of the candidates for increasing energy density beyond that of traditional lithium -ion batteries. Whereas, intrinsic dendrites growth is a chronic disease severely hampered the application of lithium metal batteries. Hence, partial alloying electrode (LiAl and LiC alloy) with lithiophilic sites and interconnected ion-electron conductive skeleton is presented through repeated folding -rolling strategy. Electrochemical measurement and in situ optical microscopy demonstrate the effectiveness of alloying anode for inhibiting dendrites growth by uniform Li+ flux distribution. The LixMy composite electrode can delivers ultralong cycle life for more than 800 h with negligible overpotential of similar to 10 mV (1 mA cm(-2), 1 mAh cm(-2)). Moreover, the full cell assembled with LiFePO4 cathode exhibited superior rate performance and cycle stability, even at high current density of 2 A g(-1). The availability and scalable method for modifying lithium metal anode provide an essential pace to promoting lithium metal batteries application.
引用
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页数:8
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