Tailoring the Mechanical and Electrochemical Properties of an Artificial Interphase for High-Performance Metallic Lithium Anode

被引：64

作者：

Sun, Yipeng ^{[1
,2
]}

Amirmaleki, Maedeh ^{[3
]}

Zhao, Yang ^{[1
]}

Zhao, Changtai ^{[1
]}

Liang, Jianneng ^{[1
]}

Wang, Changhong ^{[1
]}

Adair, Keegan R. ^{[1
]}

Li, Junjie ^{[1
]}

Cui, Teng ^{[3
]}

Wang, Guorui ^{[3
]}

Li, Ruying ^{[1
]}

Filleter, Tobin ^{[3
]}

Cai, Mei ^{[4
]}

Sham, Tsun-Kong ^{[2
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[2] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

[3] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada

[4] Gen Motors R&D Ctr, Warren, MI 48090 USA

来源：

ADVANCED ENERGY MATERIALS | 2020年 / 10卷 / 28期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Li-metal anodes; mechanical properties; rechargeable batteries; solid-electrolyte interphases; thin films; SOLID-ELECTROLYTE INTERPHASE; DENDRITE-FREE; CYCLE LIFE; LAYER; BATTERIES; DEPOSITION; GRAPHENE;

D O I：

10.1002/aenm.202001139

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Lithium metal is regarded as the "Holy Grail" of anode materials due to its low electrochemical potential and high theoretical capacity. Unfortunately, its unstable solid electrolyte interphase (SEI) leads to low Coulombic efficiency (CE) and serious safety issues. Herein, a hybrid nanoscale polymeric protective film with tunable composition and improved stiffness is developed by incorporating aluminum crosslinkers into the polymer chains. The Li plating/stripping process is regulated through the protective coating and the dendrite growth is effectively suppressed. Promisingly, the protected Li can deliver stable performance for more than 350 h with a cycling capacity of 2 mAh cm(-2) without a notable increase in overpotential. Moreover, a stable charge/discharge cycling in Li-O-2 batteries with the protected Li can be maintained for more than 600 h. This work provides guidance on the rational design of electrode interfaces and opens up new opportunities for the fabrication of next-generation energy storage systems.

引用

页数：9

共 44 条

[1]

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