Stabilized lithium metal anode by an efficient coating for high-performance Li-S batteries
2020-01
Source PublicationENERGY STORAGE MATERIALS
ISSN2405-8297
Volume24Pages:329-335
Status已发表
DOI10.1016/j.ensm.2019.07.042
Abstract

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.

KeywordLi-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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Indexed BySCI ; SCIE ; EI
Funding ProjectChina Postdoctoral Science Foundation[2017M621574]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000500484000032
PublisherELSEVIER
EI KeywordsLithium sulfur batteries
WOS KeywordLIQUID ; LAYER ; ELECTRODEPOSITION ; INTERLAYER
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104525
Collection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
Corresponding AuthorLiu, Wei
Affiliation
ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
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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