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학술지 Coatable Li4SnS4 Solid Electrolytes Prepared from Aqueous Solutions for All-Solid-State Lithium-Ion Batteries
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저자
최영은, 박근호, 김동현, 오대양, 곽희람, 이영기, 정윤석
발행일
201706
출처
ChemSusChem, v.10 no.12, pp.2605-2611
ISSN
1864-5631
출판사
ChemPubSoc Europe
DOI
https://dx.doi.org/10.1002/cssc.201700409
초록
Bulk-type all-solid-state lithium-ion batteries (ASLBs) for large-scale energy-storage applications have emerged as a promising alternative to conventional lithium-ion batteries (LIBs) owing to their superior safety. However, the electrochemical performance of bulk-type ASLBs is critically limited by the low ionic conductivity of solid electrolytes (SEs) and poor ionic contact between the active materials and SEs. Herein, highly conductive (0.14 mS cm?닋1) and dry-air-stable SEs (Li4SnS4) are reported, which are prepared using a scalable aqueous-solution process. An active material (LiCoO2) coated by solidified Li4SnS4 from aqueous solutions results in a significant improvement in the electrochemical performance of ASLBs. Side-effects of the exposure of LiCoO2 to aqueous solutions are minimized by using predissolved Li4SnS4 solution.
KSP 제안 키워드
Active materials, Aqueous solution, Electrochemical performance, Energy storage, Side effects, Solid electrolyte, air-stable, all-solid-state lithium-ion batteries, highly conductive, ionic Conductivity, large-scale energy