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Title: High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries

Abstract

High-voltage (>4.0 V) rechargeable lithium (Li) metal batteries face huge obstacles due to the high reactivity of Li metal with traditional organic carbonate electrolytes. It is generally accepted that ether-based electrolytes are unstable above 4.0 V and thus unsuitable for high voltage applications, despite of their good compatibility with Li metal. Here we report a concentrated ether electrolyte that could be used under high voltage up to 4.5 V with the formation of a unique cathode/electrolyte interphase enriched in LiF, which effectively preserves the cathode crystalline structural integrity. Employing this high concentration ether electrolyte, Li metal batteries with a moderately high cathode loading of 1.5 mAh cm-2 can have a capacity retention of 92% after 500 cycles at 4.3 V and demonstrate nearly 100% cycling efficiency even at 4.5 V.

Authors:
 [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1530609
Report Number(s):
PNNL-SA-134330
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 4; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
Ether, electrolyte, high voltage, stability, lithium battery

Citation Formats

Ren, Xiaodi, Zou, Lianfeng, Jiao, Shuhong, Mei, Donghai, Engelhard, Mark H., Li, Qiuyan, Lee, Hongkyung, Niu, Chaojiang, Adams, Brian DG D., Wang, Chongmin, Liu, Jun, Zhang, Jiguang, and Xu, Wu. High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries. United States: N. p., 2019. Web. doi:10.1021/acsenergylett.9b00381.
Ren, Xiaodi, Zou, Lianfeng, Jiao, Shuhong, Mei, Donghai, Engelhard, Mark H., Li, Qiuyan, Lee, Hongkyung, Niu, Chaojiang, Adams, Brian DG D., Wang, Chongmin, Liu, Jun, Zhang, Jiguang, & Xu, Wu. High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries. United States. doi:10.1021/acsenergylett.9b00381.
Ren, Xiaodi, Zou, Lianfeng, Jiao, Shuhong, Mei, Donghai, Engelhard, Mark H., Li, Qiuyan, Lee, Hongkyung, Niu, Chaojiang, Adams, Brian DG D., Wang, Chongmin, Liu, Jun, Zhang, Jiguang, and Xu, Wu. Fri . "High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries". United States. doi:10.1021/acsenergylett.9b00381.
@article{osti_1530609,
title = {High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries},
author = {Ren, Xiaodi and Zou, Lianfeng and Jiao, Shuhong and Mei, Donghai and Engelhard, Mark H. and Li, Qiuyan and Lee, Hongkyung and Niu, Chaojiang and Adams, Brian DG D. and Wang, Chongmin and Liu, Jun and Zhang, Jiguang and Xu, Wu},
abstractNote = {High-voltage (>4.0 V) rechargeable lithium (Li) metal batteries face huge obstacles due to the high reactivity of Li metal with traditional organic carbonate electrolytes. It is generally accepted that ether-based electrolytes are unstable above 4.0 V and thus unsuitable for high voltage applications, despite of their good compatibility with Li metal. Here we report a concentrated ether electrolyte that could be used under high voltage up to 4.5 V with the formation of a unique cathode/electrolyte interphase enriched in LiF, which effectively preserves the cathode crystalline structural integrity. Employing this high concentration ether electrolyte, Li metal batteries with a moderately high cathode loading of 1.5 mAh cm-2 can have a capacity retention of 92% after 500 cycles at 4.3 V and demonstrate nearly 100% cycling efficiency even at 4.5 V.},
doi = {10.1021/acsenergylett.9b00381},
journal = {ACS Energy Letters},
number = 4,
volume = 4,
place = {United States},
year = {2019},
month = {4}
}