Polymer Zwitterion-Based Artificial Interphase Layers for Stable Lithium Metal Anodes

被引：33

作者：

Jin, Tong ^{[1
]}

Liu, Ming ^{[2
]}

Su, Kai ^{[1
]}

Lu, Yue ^{[1
]}

Cheng, Guang ^{[1
]}

Liu, Yao ^{[2
]}

Li, Nian Wu ^{[1
]}

Yu, Le ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 48期

基金：

中国国家自然科学基金;

关键词：

polymer zwitterion; artificial interphase layers; interfacial engineering; lithium dendrite; lithium metal anodes; SOLID-ELECTROLYTE INTERPHASE; ION-TRANSPORT; BATTERIES; PROGRESS;

D O I：

10.1021/acsami.1c19479

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lithium (Li) metal batteries are promising future rechargeable batteries with high-energy density as the Li metal anode (LMA) possesses a high specific capacity and the lowest potential. However, the commercial application of the LMA has been hindered by a low Coulombic efficiency and dendrite growth, which are related to the unstable interphase with poor Li+ ion transport. Herein, we report novel polymer zwitterion-based artificial interphase layers (AILs) with improved Li+ ion transport and high stability for long-life LMAs. Benefitting from the unique zwitterion effect within the polymer zwitterion-based AILs, a high Li+ ion transference number (0.81) and a good ionic conductivity (0.75 x 10(-4) S cm(-1)) can be realized simultaneously at the interface. By regulating the weight ratio of the sulfonate group and the phosphate group in polymer zwitterion-based AILs, the modified LMA enables long-term Li plating/stripping for 1400 h at 1 mA cm(-2) and stable cycling in a full cell. This interfacial engineering concept could shed light on the development of safe LMAs.

引用

页码：57489 / 57496

页数：8

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