Spherical Li Deposited inside 3D Cu Skeleton as Anode with Ultrastable Performance

被引：130

作者：

Wang, Yanyan ^{[1
]}

Wang, Zhijie ^{[1
]}

Lei, Danni ^{[1
,2
]}

Lv, Wei ^{[1
]}

Zhao, Qiang ^{[1
,2
]}

Ni, Bin ^{[1
,2
]}

Liu, Yong ^{[3
]}

Li, Baohua ^{[1
]}

Kang, Feiyu ^{[1
,2
]}

He, Yan-Bing ^{[1
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Engn Lab Next Generat Power & Energy Storage Batt, Shenzhen 518055, Peoples R China

[2] Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China

[3] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 24期

基金：

中国国家自然科学基金;

关键词：

3D Cu skeleton; current collector; Li metal anodes; high Coulombic efficiency; spherical Li; powder-sintering method; LITHIUM METAL ANODE; RECHARGEABLE BATTERIES; CURRENT COLLECTOR; NANOWIRE NETWORK; DENDRITIC GROWTH; IN-SITU; CELLS; MECHANISMS;

D O I：

10.1021/acsami.8b04881

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous current collectors are conducive to enhance the property of Li metal anode. Unfortunately, congestion in diffusion path during plating process damages the effects of current collectors. Herein, we developed a 3D Cu skeleton with open micrometer-sized pores by NaCl-assisted powder-sintering method. The unobstructed pores of 3D Cu skeleton help to reduce congestion during plating, thus most of Li deposited inside the current collector. Besides, the large smooth surface promotes the deposition of Li with smooth spherical shape, which mitigating Li dendrite growth. As a result, better safety and rechargeability of Li metal anode were achieved in this design.

引用

页码：20244 / 20249

页数：6

共 27 条

[1] A short review of failure mechanisms of lithium metal and lithiated graphite anodes in liquid electrolyte solutions [J].