Development of 4 V-class bulk-type all-solid-state lithium rechargeable batteries by a combined use of complex hydride and sulfide electrolytes for room temperature operation

Atsushi Unemoto, Genki Nogami, Masaru Tazawa, Mitsugu Taniguchi, Shin Ichi Orimo

Research output: Contribution to journalArticlepeer-review

Abstract

We have operated a 4 V-class bulk-type, all-solid-state LiCoO2/Li battery at room temperature. The composition consisted of a Li4 (BH4)3I complex hydride electrolyte for the electrolyte layer, and a 80Li2S 20P2S5 sulfide glass for an electrolyte in the positive electrode layer. The battery assembled exhibited a 92 mAh·g-1 initial discharge capacity at 298 K and 0.1 C. The discharge capacity for the 20th cycle remained as high as 83 mAh·g-1, corresponding to a capacity retention ratio of nearly 90%.

Original languageEnglish
Pages (from-to)720-725
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume80
Issue number12
DOIs
Publication statusPublished - 2016

Keywords

  • All-solid-state battery
  • Bulk-type
  • Complex hydride electrolyte
  • Room temperature operation
  • Sulfide electrolyte

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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