阳极
电解质
材料科学
枝晶(数学)
电化学
金属
表面改性
化学工程
沉积(地质)
阴极
电流密度
无机化学
电极
冶金
化学
物理化学
工程类
几何学
沉积物
古生物学
物理
生物
数学
量子力学
作者
Juhye Song,Jaehwan Chun,Ayoung Kim,Hojae Jung,Hyun Jong Kim,Young Jun Kim,Goojin Jeong,Hansu Kim
标识
DOI:10.1021/acsami.8b08731
摘要
Dendritic growth of a Li metal anode during cycling is one of major issues to be addressed for practical application of Li metal rechargeable batteries. Herein, we demonstrate that surface modification of Li metal with a Na-containing SO2 electrolyte can be an effective way to prevent dendritic Li growth during cell operation. The surface-modified Li metal anode exhibited no dendritic deposits even under a high areal capacity (5 mA h cm–2) and a high current density (3 mA cm–2), whereas the unmodified anode showed typical filamentary Li deposition. The surface-modified Li metal anode also demonstrated significantly enhanced electrochemical performance, which could be attributed to the newly formed Na-containing inorganic surface layer that exhibits uniform and dense properties. Consequently, surface modification with a Na-containing SO2 inorganic electrolyte is suggested as one of the most effective ways to realize a highly stable Li metal anode with dendrite-free Li deposition for Li metal-based rechargeable batteries.
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