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

Journal Article · · Journal of Power Sources

Rechargeable lithium batteries hold the promise of significantly increasing specific energy above the current state-of-the-art for Li-ion batteries. One of the key limitations with the Li metal systems is the overall cycle life. This work describes efforts to better understand the link between cycle life and evaluating advanced battery materials in conditions which more closely align with high energy cell designs. Combining a single particle model to design cells which are feasible for attaining 300 Wh kg-1 with electrochemical evaluation of coin cells with reduced electrolyte volumes found that there is a significant gap when comparing performance for lean electrolyte conditions versus flooded conditions. Reducing the amount of electrolyte from 37 g Ah-1 to 6 g Ah-1, using a well performing electrolyte for Li metal, reduced the cycle life by over a factor of 7 while also changing the overall failure mode. Combined these results suggest that greater attention needs to be used when evaluating electrolytes and materials for high specific energy cells.

Research Organization:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1498783
Alternate ID(s):
OSTI ID: 1636546
Report Number(s):
INL/JOU-17-44244-Rev000
Journal Information:
Journal of Power Sources, Vol. 407, Issue C; ISSN 0378-7753
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (9)

A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal February 2020
Communication—Implications of Local Current Density Variations on Lithium Plating Affected by Cathode Particle Size journal January 2019
Pathways for practical high-energy long-cycling lithium metal batteries journal February 2019
A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal January 2020
Commercialization of Lithium Battery Technologies for Electric Vehicles journal June 2019
Improving Lithium‐Metal Battery Performance under the Conditions of Lean Electrolyte through MoS 2 Coating journal January 2020
Innenrücktitelbild: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. 8/2020) journal January 2020
Inside Back Cover: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. Int. Ed. 8/2020) journal February 2020
Cover Feature: Improving Lithium‐Metal Battery Performance under the Conditions of Lean Electrolyte through MoS 2 Coating (ChemElectroChem 4/2020) journal January 2020

Figures / Tables (10)


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