High rate and stable cycling of lithium metal anode.
High rate and stable cycling of lithium metal anode.
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DOI:
10.1038/ncomms7362
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发表时间:
2015-02-20
影响因子:
16.6
通讯作者:
Zhang, Ji-Guang
中科院分区:
文献类型:
--
作者:
Qian, Jiangfeng;Henderson, Wesley A.;Xu, Wu;Bhattacharya, Priyanka;Engelhard, Mark;Borodin, Oleg;Zhang, Ji-Guang
Lithium metal is an ideal battery anode. However, dendrite growth and limited Coulombic efficiency during cycling have prevented its practical application in rechargeable batteries. Herein, we report that the use of highly concentrated electrolytes composed of ether solvents and the lithium bis(fluorosulfonyl)imide salt enables the high-rate cycling of a lithium metal anode at high Coulombic efficiency (up to 99.1%) without dendrite growth. With 4 M lithium bis(fluorosulfonyl)imide in 1,2-dimethoxyethane as the electrolyte, a lithium|lithium cell can be cycled at 10 mA cm−2 for more than 6,000 cycles, and a copper|lithium cell can be cycled at 4 mA cm−2 for more than 1,000 cycles with an average Coulombic efficiency of 98.4%. These excellent performances can be attributed to the increased solvent coordination and increased availability of lithium ion concentration in the electrolyte. Further development of this electrolyte may enable practical applications for lithium metal anode in rechargeable batteries. Lithium metal is an ideal anode material for rechargeable batteries, but lithium dendritic growth and limited Columbic efficiency prevent its applications. Here, the authors report the use of highly concentrated electrolytes composed of ether solvents and the salt lithium bis(fluorosulfonyl)imide to enable high-rate cycling of lithium anode.
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影响因子:
3.9
作者:
AURBACH, D;DAROUX, ML;YEAGER, E
通讯作者:
YEAGER, E
影响因子:
3.9
作者:
Li, Lifei;Zhou, Sisi;Huang, Xuejie
通讯作者:
Huang, Xuejie
影响因子:
15
作者:
Ding, Fei;Xu, Wu;Zhang, Ji-Guang
通讯作者:
Zhang, Ji-Guang
影响因子:
3.3
作者:
Henderson, Wesley A.
通讯作者:
Henderson, Wesley A.
影响因子:
8.6
作者:
Henderson, WA;McKenna, F;Frech, R
通讯作者:
Frech, R