LiF-Induced Stable Solid Electrolyte Interphase for a Wide Temperature SnO2-Based Anode Extensible to-50 degrees C

时间:2021-09-16作者:浏览量:228


LiF-Induced Stable Solid Electrolyte Interphase for a Wide Temperature SnO2-Based Anode Extensible to-50 degrees C

作者:Tan, L (Tan, Liang)[ 1,2 ] ; Lan, XX (Lan, Xuexia)[ 1 ] ; Chen, JW (Chen, Jinwei)[ 1 ] ; Zhang, HY (Zhang, Hanyin)[ 1 ] ; Hu, RZ (Hu, Renzong)[ 1 ] ; Zhu, M (Zhu, Min)[ 1 ]

 

ADVANCED ENERGY MATERIALS

 

文献号: 2101855

 

DOI: 10.1002/aenm.202101855

 

Early access icon在线发表日期: SEP 2021

文献类型:Article; Early Access

 

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摘要

Lithium-ion batteries (LIBs) suffer dramatic energy reduction, and are even unable to safely charge below -10 degrees C, due to sluggish Li+ transport kinetics in the anode, electrolyte and solid electrolyte interphase (SEI), as well as large overpotential which causes Li plating on the anode surface. Herein, a SnO2-LiF-graphite (SLG) composite anode is developed for wide temperature application. The SLG with a propylene carbonate electrolyte delivers a stable capacity of more than 900 mA h g(-1) at 60 degrees C with 100 mA g(-1), maintaining 823.9 mA h g(-1) at -10 degrees C. When matched with a tetrahydrofuran-based electrolyte, the SLG delivers stable capacities of 780.4 mA h g(-1) at -40 degrees C and 637.2 mA h g(-1) at -50 degrees C, respectively. It is demonstrated that the LiF-induced inorganic-rich SEI maintains the nanostructure of the active Sn, and that their interfaces with the electrolyte are highly stable. Furthermore, the formation of alpha-Sn with higher Li+ diffusion kinetics results in a very small overpotential (approximate to 0.18 V) of lithiation for SLG from 30 degrees C to -50 degrees C. This work shows that LiF-modified SnO2 anodes matched with suitable electrolytes can qualify the LIBs for a safe and long-life at wide temperature, which is helpful to further promote these batteries for low-temperature applications.

 

关键词

作者关键词:Li-ion batteries; low temperature charging; overpotential; tin oxides

 

KeyWords Plus:REVERSIBLE CONVERSION REACTION; ION BATTERIES; CRITICAL SIZE; ALPHA-SN; LITHIUM; PERFORMANCE; NANOPARTICLES; NANOFIBERS; EFFICIENCY; BEHAVIOR

 

作者信息

通讯作者地址:

 

South China University of Technology South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.

通讯作者地址: Hu, RZ; Zhu, M (通讯作者)

 

显示更多       South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.

地址:

 

显示更多       [ 1 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China

显示更多       [ 2 ] Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China

电子邮件地址:msrenzonghu@scut.edu.cn; memzhu@scut.edu.cn

 

基金资助致谢

基金资助机构显示详情       授权号

National Natural Science Foundation of China (NSFC)

 

52071144

51621001

51822104

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出版商

WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY

 

期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Energy & Fuels; Materials Science; Physics

 

Web of Science 类别:Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter