Stabilized lithium metal anode by an efficient coating for high-performance Li-S batteries
2020-01
发表期刊ENERGY STORAGE MATERIALS
ISSN2405-8297
卷号24页码:329-335
发表状态已发表
DOI10.1016/j.ensm.2019.07.042
摘要

Lithium-sulfur batteries (LSBs) are one of the most promising energy storage candidates substituted for traditional Li-ion batteries due to their high energy density and natural abundance of sulfur. However, Li metal anode is prone to react with soluble polysulfide produced during the charge/discharge process, leading to the loss of active materials, corrosion of Li metal and fast cell capacity decay. Besides, Li metal anode is also confronted with Li dendrite growth related serious safety concerns. Here, a conformal thin layer of Sn is coated on Li metal surface, which could protect Li metal anode from the parasitic reactions, accommodate the huge volume change and suppress dendritic lithium growth. The symmetric cell using Li foil with Sn coating demonstrates excellent cycling performance with low voltage polarization and uniform, dense and dendrite-free electrodeposited Li metal. In addition, LSBs with Sn coated Li metal anode shows a high specific capacity (1423.7 mAh g(-1) at 0.2 C), good rate performance and stable cycling performance with a high Coulombic efficiency of similar to 99.5% for 500 cycles at 2 C. The superior electrochemical performances are mainly attributed to the Sn protective layer which could enable the fast Li+ transport at the electrode/electrolyte interface, the suppression of Li dendrite growth and the effective minimization of active sulfur loss. This work provides a novel approach and a significant step towards costeffective, large-scalable and long-cycling stable LSBs.

关键词Li-S battery Conformal Sn coating High cycling stability High rate Anodes Coatings Corrosion Cost effectiveness Lithium compounds Lithium-ion batteries TinCoulombic efficiency Cycling performance Cycling stability Electrochemical performance Electrode/electrolyte interfaces High energy densities High specific capacity
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收录类别SCI ; SCIE ; EI
资助项目China Postdoctoral Science Foundation[2017M621574]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:000500484000032
出版者ELSEVIER
EI主题词Lithium sulfur batteries
WOS关键词LIQUID ; LAYER ; ELECTRODEPOSITION ; INTERLAYER
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104525
专题物质科学与技术学院_PI研究组_刘巍组
物质科学与技术学院_PI研究组_于奕组
物质科学与技术学院_硕士生
通讯作者Liu, Wei
作者单位
ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
第一作者的第一单位物质科学与技术学院
推荐引用方式
GB/T 7714
Xia, Shuixin,Zhang, Xun,Liang, Chao,et al. Stabilized lithium metal anode by an efficient coating for high-performance Li-S batteries[J]. ENERGY STORAGE MATERIALS,2020,24:329-335.
APA Xia, Shuixin,Zhang, Xun,Liang, Chao,Yu, Yi,&Liu, Wei.(2020).Stabilized lithium metal anode by an efficient coating for high-performance Li-S batteries.ENERGY STORAGE MATERIALS,24,329-335.
MLA Xia, Shuixin,et al."Stabilized lithium metal anode by an efficient coating for high-performance Li-S batteries".ENERGY STORAGE MATERIALS 24(2020):329-335.
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