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Title: Enhanced Interfacial Stability of Hybrid-Electrolyte Lithium-Sulfur Batteries with a Layer of Multifunctional Polymer with Intrinsic Nanoporosity

Journal Article · · Advanced Functional Materials
 [1]; ORCiD logo [1]
  1. Univ. of Texas, Austin, TX (United States). Materials Science & Engineering Program and Texas Materials Institute

We report that the use of lithium-ion conductive solid electrolytes offers a promising approach to address the polysulfide-shuttle and the lithium-dendrite problems in lithium-sulfur (Li-S) batteries. One critical issue with the development of solid-electrolyte Li-S batteries is the electrode-electrolyte interfaces. We present herein a strategic approach by employing a thin layer of a polymer with intrinsic nanoporosity (PIN) on a Li+-ion conductive solid electrolyte, which significantly enhances the ionic interfaces between the electrodes and the solid electrolyte. Among the various types of Li+-ion solid electrolytes, NASICON-type Li1+xAlxTi2-x(PO4)3 (LATP) offers advantages in terms of Li+-ion conductivity, stability in ambient environment, and practical viability. However, LATP is susceptible to reaction with both the Li-metal anode and polysulfides in Li-S batteries due to the presence of easily reducible Ti4+ ions in it. The coating with a thin layer of PIN presented in this study overcomes the above issues. At the negative-electrode side, the PIN layer prevents the direct contact of Li-metal with the LATP solid electrolyte, circumventing the reduction of LATP by Li metal. Lastly, at the positive electrode side, the PIN layer prevents the migration of polysulfides to the surface of LATP, preventing the reduction of LATP by polysulfides.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0005397
OSTI ID:
1598245
Alternate ID(s):
OSTI ID: 1483149
Journal Information:
Advanced Functional Materials, Vol. 29, Issue 3; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

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