Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 161, Issue 1, Pages A154-A159Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.072401jes
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Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Trade, Industry Energy [20112010100150]
- UNIST (Ulsan National Institute of Science and Technology) [1.130019.01]
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The electrochemical performances of LiTi2(PS4)(3) (LTPS) with a 75Li(2)S-25P(2)S(5) glass-ceramic solid electrolyte (SE) are investigated. In spite of irreversibility of structural changes, LTPS exhibits a high first discharge capacity of 455 mAh g(-1) with good cycling retention of 76% at the 25th cycle between 1.5-3.5 V at 50 mA g(-1) at 30 degrees C. In sharp contrast, LTPS with a liquid electrolyte (LE) in a conventional cell loses half of its initial capacity after only 14 cycles. The much poorer performance of LTPS in the LE compared to that in the SE is believed to be associated with dissolution of LTPS into the LE. The results highlight the prospects of exploring electrode materials that are compatible with SEs for all-solid-state batteries. (C) 2013 The Electrochemical Society. All rights reserved.
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