Durability of the Li 1+ x Ti 2– x Al x (PO 4 ) 3 Solid Electrolyte in Lithium–Sulfur Batteries
Abstract
Adoption of cells with a solid-state electrolyte is a promising solution for eliminating the polysulfide shuttle problem in Li-S batteries. Among the various known lithium-ion conducting solid electrolytes, the sodium superionic conductor (NASICON)-type Li1+xTi2-xAlx(PO4)3 offers the advantage of good stability under ambient conditions and in contact with air. Accordingly, we present here a comprehensive assessment of the durability of Li1+xTi2-xAlx(PO4)3 in contact with polysulfide solution and in Li-S cells. Because of its high reduction potential (2.5 V vs Li/Li+), Li1+xTi2-xAlx(PO4)3 gets lithiated in contact with lithium polysulfide solution and Li2CO3 is formed on the particle surface, blocking the interfacial lithium-ion transport between the liquid and solid-state electrolytes. After the lithium insertion into the NASICON framework, the crystal expands in an anisotropic way, weakening the crystal bonds, causing fissures and resultant cracks in the ceramic, corroding the grain boundaries by polysulfide solution, and leaving unfavorable pores. The assembly of pores creates a gateway for polysulfide diffusion from the cathode side to the anode side, causing an abrupt decline in cell performance. Therefore, the solid-state electrolytes need to have good chemical compatibility with both the electrode and electrolyte, long-term stability under harsh chemical environment, and highly stable grain boundaries.
- Authors:
-
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Publication Date:
- Research Org.:
- Ceramatic, Inc. (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1337430
- Alternate Identifier(s):
- OSTI ID: 1424036
- Grant/Contract Number:
- AR0000377
- Resource Type:
- Published Article
- Journal Name:
- ACS Energy Letters
- Additional Journal Information:
- Journal Name: ACS Energy Letters Journal Volume: 1 Journal Issue: 6; Journal ID: ISSN 2380-8195
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE
Citation Formats
Wang, Shaofei, Ding, Yu, Zhou, Guangmin, Yu, Guihua, and Manthiram, Arumugam. Durability of the Li 1+ x Ti 2– x Al x (PO 4 ) 3 Solid Electrolyte in Lithium–Sulfur Batteries. United States: N. p., 2016.
Web. doi:10.1021/acsenergylett.6b00481.
Wang, Shaofei, Ding, Yu, Zhou, Guangmin, Yu, Guihua, & Manthiram, Arumugam. Durability of the Li 1+ x Ti 2– x Al x (PO 4 ) 3 Solid Electrolyte in Lithium–Sulfur Batteries. United States. https://doi.org/10.1021/acsenergylett.6b00481
Wang, Shaofei, Ding, Yu, Zhou, Guangmin, Yu, Guihua, and Manthiram, Arumugam. Fri .
"Durability of the Li 1+ x Ti 2– x Al x (PO 4 ) 3 Solid Electrolyte in Lithium–Sulfur Batteries". United States. https://doi.org/10.1021/acsenergylett.6b00481.
@article{osti_1337430,
title = {Durability of the Li 1+ x Ti 2– x Al x (PO 4 ) 3 Solid Electrolyte in Lithium–Sulfur Batteries},
author = {Wang, Shaofei and Ding, Yu and Zhou, Guangmin and Yu, Guihua and Manthiram, Arumugam},
abstractNote = {Adoption of cells with a solid-state electrolyte is a promising solution for eliminating the polysulfide shuttle problem in Li-S batteries. Among the various known lithium-ion conducting solid electrolytes, the sodium superionic conductor (NASICON)-type Li1+xTi2-xAlx(PO4)3 offers the advantage of good stability under ambient conditions and in contact with air. Accordingly, we present here a comprehensive assessment of the durability of Li1+xTi2-xAlx(PO4)3 in contact with polysulfide solution and in Li-S cells. Because of its high reduction potential (2.5 V vs Li/Li+), Li1+xTi2-xAlx(PO4)3 gets lithiated in contact with lithium polysulfide solution and Li2CO3 is formed on the particle surface, blocking the interfacial lithium-ion transport between the liquid and solid-state electrolytes. After the lithium insertion into the NASICON framework, the crystal expands in an anisotropic way, weakening the crystal bonds, causing fissures and resultant cracks in the ceramic, corroding the grain boundaries by polysulfide solution, and leaving unfavorable pores. The assembly of pores creates a gateway for polysulfide diffusion from the cathode side to the anode side, causing an abrupt decline in cell performance. Therefore, the solid-state electrolytes need to have good chemical compatibility with both the electrode and electrolyte, long-term stability under harsh chemical environment, and highly stable grain boundaries.},
doi = {10.1021/acsenergylett.6b00481},
journal = {ACS Energy Letters},
number = 6,
volume = 1,
place = {United States},
year = {Fri Nov 04 00:00:00 EDT 2016},
month = {Fri Nov 04 00:00:00 EDT 2016}
}
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https://doi.org/10.1021/acsenergylett.6b00481
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Works referencing / citing this record:
Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application
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