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Title: Lithium Metal Electrode — Understanding Its Unique Characteristics and Functions

Abstract

Lithium metal electrode (LME) is attractive for the next generation of commercial high-energy rechargeable lithium battery (RLB) design and development. As a light element with a very reducing electrochemical potential, Li metal certainly has the unique characteristics that also present challenges for its application in RLBs. To overcome technical barriers with LME such as the dendrite formation that causes uneven current distributions, excessive SEI formation that consumes Li inventory, and formation of inactive Li metal in granular forms that induces safety hazards, more fundamental understanding of the unique characteristics of LME and its impact on functions in performance in RLBs is critical. Here, we present some recent work based on temporally-correlated reactive molecular dynamics simulations to understand the Li deposition and the associated nucleation and growth process on the LME or graphitic electrode surfaces. Such a study provides some intriguing perspectives on how Li reacts with electrolytes on LME and conventional graphitic electrodes in the RLB operation. Such an insight could help improving our strategy to deal with LME problems and provide functional improvements for LME’s application in RLBs. This presentation is dedicated to Professor Robert Huggins for his life-long teaching of the fundamentals on solid state ionics and itsmore » implications in understanding the electrochemical behavior of Li in RLB applications.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Idaho National Laboratory
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Vehicle Technology Office
OSTI Identifier:
1604657
Report Number(s):
INL/CON-19-53477-Rev002
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: The 236th Electrochemical Society Meeting, Atlanta, GA, 10/13/2019 - 10/17/2019
Country of Publication:
United States
Language:
English
Subject:
25 - ENERGY STORAGE; Rechargeable lithium batteries; Lithium metal electrode

Citation Formats

Liaw, Boryann, Dufek, Eric J, and Pawar, Gorakh M. Lithium Metal Electrode — Understanding Its Unique Characteristics and Functions. United States: N. p., 2020. Web.
Liaw, Boryann, Dufek, Eric J, & Pawar, Gorakh M. Lithium Metal Electrode — Understanding Its Unique Characteristics and Functions. United States.
Liaw, Boryann, Dufek, Eric J, and Pawar, Gorakh M. Wed . "Lithium Metal Electrode — Understanding Its Unique Characteristics and Functions". United States. https://www.osti.gov/servlets/purl/1604657.
@article{osti_1604657,
title = {Lithium Metal Electrode — Understanding Its Unique Characteristics and Functions},
author = {Liaw, Boryann and Dufek, Eric J and Pawar, Gorakh M},
abstractNote = {Lithium metal electrode (LME) is attractive for the next generation of commercial high-energy rechargeable lithium battery (RLB) design and development. As a light element with a very reducing electrochemical potential, Li metal certainly has the unique characteristics that also present challenges for its application in RLBs. To overcome technical barriers with LME such as the dendrite formation that causes uneven current distributions, excessive SEI formation that consumes Li inventory, and formation of inactive Li metal in granular forms that induces safety hazards, more fundamental understanding of the unique characteristics of LME and its impact on functions in performance in RLBs is critical. Here, we present some recent work based on temporally-correlated reactive molecular dynamics simulations to understand the Li deposition and the associated nucleation and growth process on the LME or graphitic electrode surfaces. Such a study provides some intriguing perspectives on how Li reacts with electrolytes on LME and conventional graphitic electrodes in the RLB operation. Such an insight could help improving our strategy to deal with LME problems and provide functional improvements for LME’s application in RLBs. This presentation is dedicated to Professor Robert Huggins for his life-long teaching of the fundamentals on solid state ionics and its implications in understanding the electrochemical behavior of Li in RLB applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {3}
}

Conference:
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