A Permselective Coating Protects Lithium Anode toward a Practical Lithium-Sulfur Battery

被引：70

作者：

Han, Zhiyuan ^{[1
]}

Ren, Hong-Rui ^{[1
,2
]}

Huang, Zhijia ^{[1
]}

Zhang, Yunbo ^{[1
]}

Gu, Sichen ^{[1
]}

Zhang, Chen ^{[1
]}

Liu, Wenhua ^{[1
]}

Yang, Jinlong ^{[2
]}

Zhou, Guangmin ^{[1
]}

Yang, Quan-Hong ^{[3
,4
,5
]}

Lv, Wei ^{[1
]}

机构：

[1] Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China

[2] Shenzhen Univ, Coll Mat Sci & Engn, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China

[3] Tianjin Univ, Nanoyang Grp, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

[4] Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China

[5] Haihe Lab Sustainable Chem Transformat, Tianjin 300192, Peoples R China

来源：

ACS NANO | 2023年 / 17卷 / 05期

基金：

中国国家自然科学基金;

关键词：

lithium metal batteries; hybrid protective layer; selective permeability; lithium polysulfide shuttling; corrosion-resistant layer; MIXED CARBONATE/LIPF6 ELECTROLYTE; METAL ANODE;

D O I：

10.1021/acsnano.2c10047

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lithium metal is a desirable anode for high-energy density lithium-sulfur (Li-S) batteries. However, its reliability is severely limited by dendrite growth and side reactions with polysulfides, which are yet challenging to solve simultaneously. Herein, we report a protective layer that works the same way as the ion-permselective cell membrane, yielding a corrosion-resistant and dendrite-free Li metal anode specially for Li-S batteries. A self limited assembly of octadecylamine together with Al3+ ions on a Li metal anode surface produces a dense, stable yet thin layer with ionic conductive Al-Li alloy uniformly embedded in it, which prevents the passage of polysulfides but regulates the penetrated Li ion flux for uniform Li deposition. As a result, the assembled batteries show excellent cycling stability even with a high sulfur loaded cathode, suggesting a straightforward but promising strategy to stabilize highly active anodes for practical applications.

引用

页码：4453 / 4462

页数：10

共 38 条

[1] Vulcanization and crosslinking in elastomers [J].