Fabrication of all-solid-state battery using epitaxial LiCoO2 thin films

Susumu Shiraki, Hideki Oki, Yoshitaka Takagi, Tohru Suzuki, Akichika Kumatani, Ryota Shimizu, Masakazu Haruta, Takeo Ohsawa, Yukio Sato, Yuichi Ikuhara, Taro Hitosugi

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


We demonstrate the orientation control of LiCoO2 epitaxial thin films deposited on (110)-2 × 1 reconstructed surfaces of Au and Pt by using pulsed laser deposition. The epitaxial LiCoO2 thin films have CoO2 layers tilted with respect to the surface normal, which is suitable for Li-ion insertion/extraction reactions in LiCoO2. We show the successful operation of all-solid-state thin-film Li-ion batteries by employing the epitaxial LiCoO2 thin films as cathodes. The electrochemical properties of epitaxial films in all-solid-state batteries are improved compared to the batteries using liquid electrolyte.

Original languageEnglish
Pages (from-to)881-887
Number of pages7
JournalJournal of Power Sources
Publication statusPublished - 2014 Dec 1


  • Crystal orientation
  • Epitaxial thin films
  • Lithium cobaltite
  • Lithium-ion batteries
  • Surface reconstruction

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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