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Synthesis and electrochemical performance of antiperovskite-like Li3SI solid electrolyte

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Abstract
Lithium-rich antiperovskite-type (LiRAP) solid electrolytes have received a great deal of attention due to their high mobile ion occupancy rate and narrow activation barrier. Oxide-based LiRAPs are widely studied. However, almost no reports are available on the electrochemical nature of sulfide-based LiRAPs. Here, we prepared the first antiperovskite-like Li3SI - solid solution type solid electrolyte and studied its electrochemical properties. The crystalline nature of the electrolyte was evaluated by powder X-ray diffraction. Electrochemical impedance spectroscopy showed that the Li3SI solid electrolyte exhibited an ionic conductivity of 2.2 x 10-5 S cm-1 at room temperature. The electrochemical stability of the electrolyte was studied with cyclic voltammetry and DC cycle tests, which showed that the proposed electrolyte was stable up to 10 V and >100 h, respectively. An assembled all-solid-state lithium battery using the Li3SI solid electrolyte exhibited an initial discharge capacity of 96.8 mAh g-1 at a current density of 3 mA g-1.
Author(s)
라제시 라자고팔박민호유브라 수브라리안정유진류광선
Issued Date
2021
Type
Article
Keyword
Solid electrolyteSolid solutionAntiperovskiteLi3SILithium battery
DOI
10.1016/j.jelechem.2021.115477
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9639
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_crossref_primary_10_1016_j_jelechem_2021_115477&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Synthesis%20and%20electrochemical%20performance%20of%20antiperovskite-like%20Li3SI%20solid%20electrolyte&offset=0&pcAvailability=true
Publisher
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Location
스위스
Language
영어
ISSN
1572-6657
Citation Volume
895
Citation Number
1
Citation Start Page
1155477
Citation End Page
1155477
Appears in Collections:
Natural Science > Chemistry
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