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Title: Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions

Abstract

Ion transport–driven instabilities in electrodeposition of metals that lead to morphological instabilities and dendrites are receiving renewed attention because mitigation strategies are needed for improving rechargeability and safety of lithium batteries. The growth rate of these morphological instabilities can be slowed by immobilizing a fraction of anions within the electrolyte to reduce the electric field at the metal electrode. We analyze the role of elastic deformation of the solid electrolyte with immobilized anions and present theory combining the roles of separator elasticity and modified transport to evaluate the factors affecting the stability of planar deposition over a wide range of current densities. Lastly, we find that stable electrodeposition can be easily achieved even at relatively high current densities in electrolytes/separators with moderate polymer-like mechanical moduli, provided a small fraction of anions are immobilized in the separator.

Authors:
 [1];  [2];  [2]
  1. Cornell Univ., Ithaca, NY (United States). Sibley School of Mechanical and Aerospace Engineering
  2. Cornell Univ., Ithaca, NY (United States). Robert Frederick Smith School of Chemical and Biomolecular Engineering
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1466573
Grant/Contract Number:  
SC0001086
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 2; Journal Issue: 7; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Tikekar, Mukul D., Archer, Lynden A., and Koch, Donald L. Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions. United States: N. p., 2016. Web. doi:10.1126/sciadv.1600320.
Tikekar, Mukul D., Archer, Lynden A., & Koch, Donald L. Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions. United States. doi:10.1126/sciadv.1600320.
Tikekar, Mukul D., Archer, Lynden A., and Koch, Donald L. Fri . "Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions". United States. doi:10.1126/sciadv.1600320. https://www.osti.gov/servlets/purl/1466573.
@article{osti_1466573,
title = {Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions},
author = {Tikekar, Mukul D. and Archer, Lynden A. and Koch, Donald L.},
abstractNote = {Ion transport–driven instabilities in electrodeposition of metals that lead to morphological instabilities and dendrites are receiving renewed attention because mitigation strategies are needed for improving rechargeability and safety of lithium batteries. The growth rate of these morphological instabilities can be slowed by immobilizing a fraction of anions within the electrolyte to reduce the electric field at the metal electrode. We analyze the role of elastic deformation of the solid electrolyte with immobilized anions and present theory combining the roles of separator elasticity and modified transport to evaluate the factors affecting the stability of planar deposition over a wide range of current densities. Lastly, we find that stable electrodeposition can be easily achieved even at relatively high current densities in electrolytes/separators with moderate polymer-like mechanical moduli, provided a small fraction of anions are immobilized in the separator.},
doi = {10.1126/sciadv.1600320},
journal = {Science Advances},
issn = {2375-2548},
number = 7,
volume = 2,
place = {United States},
year = {2016},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 27 works
Citation information provided by
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