An artificial Li3PO4 solid electrolyte interphase layer to achieve petal-shaped deposition of lithium

被引：16

作者：

Bai, Maohui ^{[1
,2
]}

Xie, Keyu ^{[2
]}

Hong, Bo ^{[1
]}

Yuan, Kai ^{[2
]}

Li, Zhihao ^{[2
]}

Huang, Zimo ^{[1
]}

Shen, Chao ^{[2
]}

Lai, Yanqing ^{[1
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

[2] Northwestern Polytech Univ Shaanxi Joint Lab Grap, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

SOLID STATE IONICS | 2019年 / 333卷

基金：

国家重点研发计划;

关键词：

Li metal anode; Copper phosphate; Battery; Surfaces; Dendrites; METAL; MATRIX;

D O I：

10.1016/j.ssi.2019.01.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Inhibiting the formation of lithium (Li) dendrites for Li metal anode is of great significance to the practical application of high-energy-density battery systems. Herein, we report an artificial Li3PO4 solid electrolyte interphase (SEI) layer on a Li metal anode (LPO-Li) which fabricated by the spontaneous redox reaction of the Li metal and copper phosphate (Cu-3(PO4)(2)) in tetrahydrofuran (THF) organic solvent at room temperature. This stable Li3PO4 layer can act as a protective layer between the metallic Li and electrolyte to prevent side effects during cycling. The Li metal anode with the Li3PO4 layer can acquire optimize deposition of Li and enable a stable and prolonged cycling without formation of Li dendrites. When matching the LiNi0.6Co0.2Mn0.2O2 (NCM) cathode, the NCM/LPO-Li battery presents an excellent electrochemical performance.

引用

页码：101 / 104

页数：4

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