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All-solid-state lithium-ion batteries with TiS2 nanosheets and sulphide solid electrolytes

Title
All-solid-state lithium-ion batteries with TiS2 nanosheets and sulphide solid electrolytes
Author
정윤석
Keywords
METAL DICHALCOGENIDE NANOSHEETS; SECONDARY BATTERIES; RECHARGEABLE BATTERIES; GLASS; LICOO2; INTERFACE; STORAGE; FABRICATION; CONDUCTORS; CATHODE
Issue Date
2016-06
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.4, no.26, page.10329-10335
Abstract
Bulk-type all-solid-state lithium-ion batteries (ASLBs) using sulphide solid electrolytes (SEs) are considered as one of the promising alternative batteries because of their ultimate safety and scalable fabrication. However, they suffer from poor ionic contacts between active materials and SEs. Herein, we report, for the first time, the excellent electrochemical performances of sulphide-SE-based bulk-type ASLBs employing TiS2 nanosheets (TiS2-NSs) prepared by scalable mechanochemical lithiation, followed by exfoliation in water under ultrasonication. The TiS2-NS in all-solid-state cells exhibits an enhancement of reversible capacity which is attributed to the SE region in intimate contact with TiS2-NSs. Importantly, an exceptionally superior rate capability of the TiS2-NS compared to that of bulk TiS2 and even ball-milled TiS2, which is attributed to the ultrathin 2D structure (with short Li-ion diffusion length and intimate contacts between the TiS2-NS and SE) and high electronic conductivity, is highlighted.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C6TA01628F#!divAbstracthttp://repository.hanyang.ac.kr/handle/20.500.11754/72496
ISSN
2050-7488; 2050-7496
DOI
10.1039/c6ta01628f
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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