Metal-Organic Framework Separator as a Polyselenide Filter for High-Performance Lithium-Selenium Batteries

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Authors/Editors


Strategic Research Themes


Publication Details

Author listHossain M.A., Tulaphol S., Thapa A.K., Rahaman M.S., Jasinski J.B., Wang H., Sunkara M.K., Syzdek J., Ozdemir O.K., Ornstein J.M., Sathitsuksanoh N.

PublisherAmerican Chemical Society

Publication year2021

Volume number4

Issue number12

Start page13450

End page13460

Number of pages11

ISSN25740962

eISSN2574-0962

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85119955573&doi=10.1021%2facsaem.1c01806&partnerID=40&md5=91998fc0b61ce1d581530741a93f9065

LanguagesEnglish-Great Britain (EN-GB)


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Abstract

Rapid self-discharge, poor cycling stability, and low Coulombic efficiency from polyselenide shuttling have retarded practical applications of lithium-selenium batteries. Here, we show that a cation-selective PCN separator of PCN-250(Fe) metal-organic frameworks coated on a porous polypropylene membrane suppresses polyselenide shuttle and enhances lithium-ion transport in lithium-selenium batteries. The Lewis acid sites of this PCN separator acted as selective barriers that immobilized polyselenides and provided uniform and stable lithium nucleation and growth during cycling. Lithium-selenium cells with the PCN separator had a stable and reversible electrochemical performance with a high discharge capacity of 423 mAh/g at C/5 and a Coulombic efficiency of >98% for 500 cycles. This work provides a guide for developing high-performance lithium-selenium batteries by a cation-selective separator strategy. This PCN separator can be applied to alkali-metal and alkali-metal chalcogenide battery systems.


Keywords

batterieslithium-seleniumpolyselenidesshuttle effectTFSI anions


Last updated on 2023-17-10 at 07:36