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Title: Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries

Abstract

Strong demand for higher energy batteries for extended range electric vehicles has driven battery technology development toward Li metal batteries. One limitation of Li metal batteries is cycle life. At odds are the amount of electrolyte to fulfill high energy and the amount needed to achieve long cycle life. Here we employ an electrochemical model and design of experiment to understand impacts on cycle life and failure as electrolyte content is reduced to levels needed to achieve reasonably high specific energy. With lean electrolyte, a gap exists in achieving long cycle life with a reduction by a factor of 6.5 when electrolyte amount is reduced from 37.0?g Ah-1 to 6.0?g Ah-1. Two primary failure routes are identified with differences between lean and high electrolyte quantities. The results suggest that reporting and performing experiments for high energy cell designs requires that amount of electrolyte be considered a critical parameter.

Authors:
 [1];  [1];  [2]; ORCiD logo [3];  [3];  [1];  [3];  [1];  [1]
  1. BATTELLE ENERGY ALLIANCE, LLC
  2. Idaho National Laboratory
  3. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1572692
Report Number(s):
PNNL-SA-148307
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 407
Country of Publication:
United States
Language:
English

Citation Formats

Nagpure, Shrikant, Tanim, Tanvir, Dufek, Eric, Viswanathan, Vilayanur V., Crawford, Aladsair J., Wood, Sean, Xiao, Jie, Dickerson, Charles, and Liaw, Boryann. Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries. United States: N. p., 2018. Web. doi:10.1016/j.jpowsour.2018.10.060.
Nagpure, Shrikant, Tanim, Tanvir, Dufek, Eric, Viswanathan, Vilayanur V., Crawford, Aladsair J., Wood, Sean, Xiao, Jie, Dickerson, Charles, & Liaw, Boryann. Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries. United States. doi:10.1016/j.jpowsour.2018.10.060.
Nagpure, Shrikant, Tanim, Tanvir, Dufek, Eric, Viswanathan, Vilayanur V., Crawford, Aladsair J., Wood, Sean, Xiao, Jie, Dickerson, Charles, and Liaw, Boryann. Sat . "Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries". United States. doi:10.1016/j.jpowsour.2018.10.060.
@article{osti_1572692,
title = {Impacts of lean electrolyte on cycle life for rechargeable Li metal batteries},
author = {Nagpure, Shrikant and Tanim, Tanvir and Dufek, Eric and Viswanathan, Vilayanur V. and Crawford, Aladsair J. and Wood, Sean and Xiao, Jie and Dickerson, Charles and Liaw, Boryann},
abstractNote = {Strong demand for higher energy batteries for extended range electric vehicles has driven battery technology development toward Li metal batteries. One limitation of Li metal batteries is cycle life. At odds are the amount of electrolyte to fulfill high energy and the amount needed to achieve long cycle life. Here we employ an electrochemical model and design of experiment to understand impacts on cycle life and failure as electrolyte content is reduced to levels needed to achieve reasonably high specific energy. With lean electrolyte, a gap exists in achieving long cycle life with a reduction by a factor of 6.5 when electrolyte amount is reduced from 37.0?g Ah-1 to 6.0?g Ah-1. Two primary failure routes are identified with differences between lean and high electrolyte quantities. The results suggest that reporting and performing experiments for high energy cell designs requires that amount of electrolyte be considered a critical parameter.},
doi = {10.1016/j.jpowsour.2018.10.060},
journal = {Journal of Power Sources},
number = ,
volume = 407,
place = {United States},
year = {2018},
month = {12}
}