Three-dimensional carbon material as stable host for dendrite-free lithium metal anodes

被引：34

作者：

Xu, Ying ^{[1
,2
]}

Wang, Liping ^{[3
]}

Jia, Weishang ^{[3
]}

Yu, Yanan ^{[1
]}

Zhang, Ruya ^{[1
]}

Li, Tao ^{[1
,2
]}

Fu, Xianbiao ^{[1
,2
]}

Niu, Xiaobin ^{[3
]}

Li, Jingze ^{[3
]}

Kang, Yijin ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[2] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA

[3] Univ Elect Sci & Technol China, Sch Mat & Energy, Chengdu 610054, Sichuan, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2019年 / 301卷

基金：

中国国家自然科学基金;

关键词：

3-D carbon materials; Dendrite; Lithium metal anodes; CURRENT-DENSITY; PERFORMANCE; NUCLEATION; NITRATE; GROWTH; OXIDE;

D O I：

10.1016/j.electacta.2019.01.114

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

For its low redox potential (-3.04 V vs. SHE) and the high theoretical specific capacity (3860 mA h g(-1)), lithium metal is regarded as one of the most promising anode materials for next-generation batteries. However, the poor cycling performances and serious safety hazards caused by the inhomogeneous lithium deposition severely hinder the practical applications of Li metal batteries. Here, we introduce 3-D carbon materials which are subsequently in-situ transformed into LiC6 as electrode scaffold. Such lithiophilic 3-D structure with a high specific surface area enables dendrite-free deposition of Li metal, resulting in a high coulombic efficiency up to 97% after 300 cycles. We propose that besides 3-D structure, LiC6 intermediate may be responsible for the dendrite-free growth of Li, offering a potential new strategy to design high performance anodes for Li metal batteries. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：251 / 257

页数：7

共 37 条

[1] ELECTROCHEMICAL ASPECTS OF THE GENERATION OF RAMIFIED METALLIC ELECTRODEPOSITS [J].