电解质
阳极
相间
电化学
材料科学
化学工程
锂(药物)
氧气
电池(电)
枝晶(数学)
金属
无机化学
化学
电极
冶金
有机化学
物理化学
工程类
内分泌学
功率(物理)
物理
生物
医学
量子力学
遗传学
数学
几何学
作者
Ping Xu,Xiaodong Lin,Zongqiang Sun,Kaixuan Li,Wenjie Dou,Qing Hou,Zijun Zhou,Jiawei Yan,Mingsen Zheng,Ruming Yuan,Quanfeng Dong
标识
DOI:10.1016/j.jechem.2022.04.025
摘要
Lithium-oxygen (Li-O2) battery is considered as one of the most promising alternatives because of its ultrahigh theoretical energy density. However, their cycling stability is severely restricted by the uncontrollable dendrite growth and serious oxygen corrosion issue on Li surface. Herein, a sulfur-modified Li surface can be successfully constructed via chemical reaction of guanylthiourea (GTU) molecule on Li, which can induce the selectively fast decomposition of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) to form a smooth and stable inorganics-rich solid-electrolyte interphase (IR-SEI) during the subsequent electrochemical process. Such an IR-SEI cannot only offer a highly reversible and stable Li plating/stripping chemistry with dendrite-free property (10 mA cm−2-10 mAh cm−2, > 0.5 years; 3 mA cm−2-3 mAh cm−2, > 1 year) but also endows the Li metal an anti-oxygen corrosion function, thereby significantly improving the cycling stability of Li-O2 batteries. This work provides a new idea for constructing functional solid-electrolyte interphase (SEI) to achieve highly stable Li metal anode.
科研通智能强力驱动
Strongly Powered by AbleSci AI