All-solid-state rechargeable lithium batteries using LiTi 2(PS4)3 cathode with Li2S-P 2S5 solid electrolyte

Bum Ryong Shin, Yoon Seok Jung

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20 Citations (Scopus)

Abstract

The electrochemical performances of LiTi2(PS4) 3 (LTPS) with a 75Li2S-25P2S5 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°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.

Original languageEnglish
Pages (from-to)A154-A159
JournalJournal of the Electrochemical Society
Volume161
Issue number1
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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