Enhancement of the high-rate capability of solid-state lithium batteries by nanoscale interfacial modification

Narumi Ohta, Kazunori Takada, Lianqi Zhang, Renzhi Ma, Minoru Osada, Takayoshi Sasaki

Research output: Contribution to journalArticle

476 Citations (Scopus)

Abstract

The enhancement of the high-rate capability of solid-state Lithium Batteries by nanoscale interfacial modification, was analyzed. The surface of LiCoO2 with Li4Ti5O12 was coated by spray coating. When the sulfide electrolytes were in contact with the oxide electrodes, the large difference between their chemical potentials make their Li+ ions transfer from the sulfide electrolytes to the oxide electrodes. Electrochemical impedance spectroscopy demonstrated the reduction of the interfacial resistance by the interposition of Li4Ti 5O12. Developed space-charge layer on the sulfide side and very large interfacial resistance improved the high-rate capability of solid-state lithium batteries. This enhancement of capability supports the practical application of solid-state lithium batteries and, hence provides a solution to the safety concerns of lithium batteries.

Original languageEnglish
Pages (from-to)2226-2229
Number of pages4
JournalAdvanced Materials
Volume18
Issue number17
DOIs
Publication statusPublished - 2006 Sep 5
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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