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Title: Designing solid-liquid interphases for sodium batteries

Secondary batteries based on earth-abundant sodium metal anodes are desirable for both stationary and portable electrical energy storage. Room-temperature sodium metal batteries are impractical today because morphological instability during recharge drives rough, dendritic electrodeposition. Chemical instability of liquid electrolytes also leads to premature cell failure as a result of parasitic reactions with the anode. Here we use joint density-functional theoretical analysis to show that the surface diffusion barrier for sodium ion transport is a sensitive function of the chemistry of solid–electrolyte interphase. In particular, we find that a sodium bromide interphase presents an exceptionally low energy barrier to ion transport, comparable to that of metallic magnesium. We evaluate this prediction by means of electrochemical measurements and direct visualization studies. These experiments reveal an approximately three-fold reduction in activation energy for ion transport at a sodium bromide interphase. Direct visualization of sodium electrodeposition confirms large improvements in stability of sodium deposition at sodium bromide-rich interphases.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [1] ;  [1] ;  [1] ;  [5] ;  [2] ;  [1]
  1. Cornell Univ., Ithaca, NY (United States). School of Chemical and Biomolecular Engineering
  2. Cornell Univ., Ithaca, NY (United States). Dept. of Physics
  3. Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics
  4. Cornell Univ., Ithaca, NY (United States). Dept. of Materials Science and Engineering
  5. Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics; Cornell Univ., Ithaca, NY (United States). Kavli Inst. at Cornell for Nanoscale Science
Publication Date:
Grant/Contract Number:
AR0000750; DMR-1120296; DMR-1654596
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Batteries; Surface patterning
OSTI Identifier:
1417017

Choudhury, Snehashis, Wei, Shuya, Ozhabes, Yalcin, Gunceler, Deniz, Zachman, Michael J., Tu, Zhengyuan, Shin, Jung Hwan, Nath, Pooja, Agrawal, Akanksha, Kourkoutis, Lena F., Arias, Tomas A., and Archer, Lynden A.. Designing solid-liquid interphases for sodium batteries. United States: N. p., Web. doi:10.1038/s41467-017-00742-x.
Choudhury, Snehashis, Wei, Shuya, Ozhabes, Yalcin, Gunceler, Deniz, Zachman, Michael J., Tu, Zhengyuan, Shin, Jung Hwan, Nath, Pooja, Agrawal, Akanksha, Kourkoutis, Lena F., Arias, Tomas A., & Archer, Lynden A.. Designing solid-liquid interphases for sodium batteries. United States. doi:10.1038/s41467-017-00742-x.
Choudhury, Snehashis, Wei, Shuya, Ozhabes, Yalcin, Gunceler, Deniz, Zachman, Michael J., Tu, Zhengyuan, Shin, Jung Hwan, Nath, Pooja, Agrawal, Akanksha, Kourkoutis, Lena F., Arias, Tomas A., and Archer, Lynden A.. 2017. "Designing solid-liquid interphases for sodium batteries". United States. doi:10.1038/s41467-017-00742-x. https://www.osti.gov/servlets/purl/1417017.
@article{osti_1417017,
title = {Designing solid-liquid interphases for sodium batteries},
author = {Choudhury, Snehashis and Wei, Shuya and Ozhabes, Yalcin and Gunceler, Deniz and Zachman, Michael J. and Tu, Zhengyuan and Shin, Jung Hwan and Nath, Pooja and Agrawal, Akanksha and Kourkoutis, Lena F. and Arias, Tomas A. and Archer, Lynden A.},
abstractNote = {Secondary batteries based on earth-abundant sodium metal anodes are desirable for both stationary and portable electrical energy storage. Room-temperature sodium metal batteries are impractical today because morphological instability during recharge drives rough, dendritic electrodeposition. Chemical instability of liquid electrolytes also leads to premature cell failure as a result of parasitic reactions with the anode. Here we use joint density-functional theoretical analysis to show that the surface diffusion barrier for sodium ion transport is a sensitive function of the chemistry of solid–electrolyte interphase. In particular, we find that a sodium bromide interphase presents an exceptionally low energy barrier to ion transport, comparable to that of metallic magnesium. We evaluate this prediction by means of electrochemical measurements and direct visualization studies. These experiments reveal an approximately three-fold reduction in activation energy for ion transport at a sodium bromide interphase. Direct visualization of sodium electrodeposition confirms large improvements in stability of sodium deposition at sodium bromide-rich interphases.},
doi = {10.1038/s41467-017-00742-x},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {2017},
month = {10}
}

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