Journal
JOURNAL OF POWER SOURCES
Volume 309, Issue -, Pages 27-32Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.01.068
Keywords
Lithium electrode; All-solid-state battery; Interface; Modification; Solid electrolyte
Funding
- Japan Science and Technology Agency (JST)
- Advanced Low Carbon Technology Research and Development Program (ALCA)
- Specially Promoted Research for Innovative Next Generation Batteries (SPRING) Project
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To evaluate ideal interfaces between Li metal and Li2S-P2S5 solid electrolytes, bulls-type cells were fabricated using thin Li metal films prepared by vacuum-evaporation. The symmetric cell of Li/75Li(2)S center dot 25P(2)S(5)/Li showed a high utilization of Li metal (about 40%), though abrupt decrease of the utilization was observed after 5 cycles. A high utilization of Li metal (about 25%) was retained for 5 cycles by inserting Au thin films at the interface between Li metal and Li2S-P2S5 solid electrolytes. Morphology of Li metal after dissolution/deposition cycles for the cell with Au thin films became more uniform compared to the cell without Au thin films. (C) 2016 Elsevier B.V. All rights reserved.
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