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Title: Reactivity-Guided Interface Design in Na Metal Solid-State Batteries

Abstract

Solid-state batteries provide substantially increased safety and improved energy density when energy-dense alkali metal anodes are applied. However, most solid-state electrolytes react with alkali metals, causing a continuous increase of the cell impedance. Here, we employ a reactivity-driven strategy to improve the interfacial stability between a Na3SbS4 solid-state electrolyte and sodium metal. First-principles calculations identify a protective hydrate coating for Na3SbS4 that leads to the generation of passivating decomposition products upon contact of the electrolyte with sodium metal. The formation of this protective coating, a newly discovered hydrated phase, is achieved experimentally through exposure of Na3SbS4 to air. The buried interface is characterized using post-operando synchrotron X-ray depth profiling, providing spatially resolved evidence of the multilayered phase distribution in the Na metal symmetric cell consistent with theoretical predictions. We identify hydrates as promising for improving the metal/electrolyte interfacial stability in solid-state batteries and suggest a general strategy of interface design for this purpose.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1506559
Alternate Identifier(s):
OSTI ID: 1604683
Grant/Contract Number:  
3F-31144; AC02-06CH11357; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Joule
Additional Journal Information:
Journal Name: Joule Journal Volume: 3 Journal Issue: 4; Journal ID: ISSN 2542-4351
Publisher:
Elsevier - Cell Press
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; solid-state batteries; metal anode; interfacial stability; first-principles; computation; high-energy density; solid electrolyte; hydrate; coating; synchrotron X-ray diffraction

Citation Formats

Tian, Yaosen, Sun, Yingzhi, Hannah, Daniel C., Xiao, Yihan, Liu, Hao, Chapman, Karena W., Bo, Shou-Hang, and Ceder, Gerbrand. Reactivity-Guided Interface Design in Na Metal Solid-State Batteries. United States: N. p., 2019. Web. doi:10.1016/j.joule.2018.12.019.
Tian, Yaosen, Sun, Yingzhi, Hannah, Daniel C., Xiao, Yihan, Liu, Hao, Chapman, Karena W., Bo, Shou-Hang, & Ceder, Gerbrand. Reactivity-Guided Interface Design in Na Metal Solid-State Batteries. United States. doi:10.1016/j.joule.2018.12.019.
Tian, Yaosen, Sun, Yingzhi, Hannah, Daniel C., Xiao, Yihan, Liu, Hao, Chapman, Karena W., Bo, Shou-Hang, and Ceder, Gerbrand. Mon . "Reactivity-Guided Interface Design in Na Metal Solid-State Batteries". United States. doi:10.1016/j.joule.2018.12.019.
@article{osti_1506559,
title = {Reactivity-Guided Interface Design in Na Metal Solid-State Batteries},
author = {Tian, Yaosen and Sun, Yingzhi and Hannah, Daniel C. and Xiao, Yihan and Liu, Hao and Chapman, Karena W. and Bo, Shou-Hang and Ceder, Gerbrand},
abstractNote = {Solid-state batteries provide substantially increased safety and improved energy density when energy-dense alkali metal anodes are applied. However, most solid-state electrolytes react with alkali metals, causing a continuous increase of the cell impedance. Here, we employ a reactivity-driven strategy to improve the interfacial stability between a Na3SbS4 solid-state electrolyte and sodium metal. First-principles calculations identify a protective hydrate coating for Na3SbS4 that leads to the generation of passivating decomposition products upon contact of the electrolyte with sodium metal. The formation of this protective coating, a newly discovered hydrated phase, is achieved experimentally through exposure of Na3SbS4 to air. The buried interface is characterized using post-operando synchrotron X-ray depth profiling, providing spatially resolved evidence of the multilayered phase distribution in the Na metal symmetric cell consistent with theoretical predictions. We identify hydrates as promising for improving the metal/electrolyte interfacial stability in solid-state batteries and suggest a general strategy of interface design for this purpose.},
doi = {10.1016/j.joule.2018.12.019},
journal = {Joule},
number = 4,
volume = 3,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.joule.2018.12.019

Citation Metrics:
Cited by: 17 works
Citation information provided by
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