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Electrochemical performance of the mixed solid electrolyte (100-x) Li3SI-xLi(6)PS(5)Cl (x=0, 10, 20, and 30) for all-solid-state lithium batteries

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Abstract
In this study, solid electrolytes with improved performance are synthesized by mixing Li3SI with an antiperovskite structure that is stable to lithium metal and Li6PS5Cl with high ionic conductivity. (100-x)Li(3)SIxLi(6)PS(5)Cl (x = 0, 10, 20, 30), which is a mixture of two sulfide-based solid electrolytes, is prepared by ball milling. The structural characteristics, surface morphology, and particle size of the electrolyte material are analyzed using physico-chemical characterization technologies, such as high-power X-ray diffraction and field emission scanning electron microscopy. Electrochemical impedance spectroscopy is used to calculate the ionic conductivity of the mixed solid electrolyte. The ionic conductivity of 80Li(3)SI-20Li(6)PS(5)Cl, which exhibits the best all-solid-state lithium battery performance, is 5.84 x 10(-4) S cm(-1). In addition, 80Li(3)SI-20Li(6)PS(5)Cl shows excellent stability against lithium metal. The 2032-type coin cell composed of fabricated Li-In/80Li(3)SI-20Li(6)PS(5)Cl/NCM811 composites shows a superior capacity of 165 mAh g(-1) in the initial cycle. This study provides high ionic conductivity and excellent electrochemical performance through the mixing of two kinds of solid electrolyte materials to obtain a promising solid electrolyte.
Author(s)
박민호라제시 라자고팔류광선
Issued Date
2021
Type
Article
Keyword
All-solid-state lithium batterySolid electrolyteSulfide electrolyteLi3SILi6PS5Cl
DOI
10.1016/j.jpowsour.2021.230031
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9632
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_crossref_primary_10_1016_j_jpowsour_2021_230031&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Electrochemical%20performance%20of%20the%20mixed%20solid%20electrolyte%20(100-x)%20Li3SI-xLi(6)PS(5)Cl%20(x%3D0,%2010,%2020,%20and%2030)%20for%20all-solid-state%20lithium%20b&offset=0&pcAvailability=true
Publisher
JOURNAL OF POWER SOURCES
Location
네덜란드
Language
영어
ISSN
0378-7753
Citation Volume
501
Citation Number
1
Citation Start Page
230031
Citation End Page
230031
Appears in Collections:
Natural Science > Chemistry
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