Highly Stable and Ultrahigh-Rate Li Metal Anode Enabled by Fluorinated Carbon Fibers
2021-01
发表期刊SMALL (IF:13.0[JCR-2023],13.5[5-Year])
ISSN1613-6810
发表状态已发表
DOI10.1002/smll.202006002
摘要

The advanced energy storage of an Li metal substituted for graphite anode can provide a significant enhancement in a battery's energy density. Nevertheless, the practical implementation of metallic Li has seriously been fettered by the notorious Li dendrite growth and the huge volumetric variation of Li metal inducing poor cycling performance and safety concerns. In this regard, constructing a robust SEI layer combined with a 3D host to stabilize the Li metal is strongly in demand. Herein, a highly stable hosted Li with an LiF dominated SEI has successfully been achieved through metal-free fluorinated carbon fibers (FCF) with strong lithiophilicity. The metal-free design is cost-effective and can retain the energy density of the Li metal, minimizing the unnecessary energy sacrifice from the extra high gravimetric density lithiophilic sites. The FCF hosted Li delivers a promoted high Coulombic efficiency, homogeneous Li deposition, and ultrahigh rate stable cycling over 1000 cycles at 20 mA cm(-2) with a much lower voltage polarization (approximate to 220 mV). Moreover, half cells coupled with LiNi0.8Co0.1Mn0.1O2, sulfur or even thick LiCoO2 cathode demonstrate superior rate performances and enhanced cycling stability even under a lean electrolyte. This work proves the feasibility of FCF hosted Li for practical usage and provides a novel approach toward cost-effective and high performance lithium metal batteries.

关键词anodes batteries energy storage fluorination Li metal
收录类别SCI ; SCIE ; EI
语种英语
资助项目National Natural Science Foundation of China[51671135][51971146][51971147][21905174] ; Shanghai Sailing Program[18YF1416800] ; Program of Shanghai Subject Chief Scientist[17XD1403000] ; Innovation Program of Shanghai Municipal Education Commission[2019-01-07-00-07-E00015]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号WOS:000603149800001
出版者WILEY-V C H VERLAG GMBH
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/124929
专题物质科学与技术学院_PI研究组_于奕组
通讯作者Huang, Yizhong; Zheng, Shiyou
作者单位
1.Univ Shanghai Sci & Technol, Sch Mat Sci Engn, Shanghai 200093, Peoples R China
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
3.Nanyang Technol Univ, Sch Mat Sci Engn, Singapore 639798, Singapore
推荐引用方式
GB/T 7714
Xia, Shuixin,Zhang, Xun,Luo, Lingli,et al. Highly Stable and Ultrahigh-Rate Li Metal Anode Enabled by Fluorinated Carbon Fibers[J]. SMALL,2021.
APA Xia, Shuixin.,Zhang, Xun.,Luo, Lingli.,Pang, Yuepeng.,Yang, Junhe.,...&Zheng, Shiyou.(2021).Highly Stable and Ultrahigh-Rate Li Metal Anode Enabled by Fluorinated Carbon Fibers.SMALL.
MLA Xia, Shuixin,et al."Highly Stable and Ultrahigh-Rate Li Metal Anode Enabled by Fluorinated Carbon Fibers".SMALL (2021).
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