Tantalum oxide nanomesh as self-standing one nanometre thick electrolyte

Xiaoxiong Xu, Kazunori Takada*, Katsutoshi Fukuda, Tsuyoshi Ohnishi, Kosho Akatsuka, Minoru Osada, Bui Thi Hang, Kazuhiro Kumagai, Takashi Sekiguchi, Takayoshi Sasaki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


Tantalum oxide (TaO 3) nanosheets coated on the surface of a LiCoO 2 cathode decrease its interfacial resistance in a solid-state battery by two orders of magnitude. Since the interfacial resistance is rate-determining in the solid-state system, the interfacial structure of the nanosheet is anticipated to pave the way for realising high-performance solid-state lithium batteries. The reduction in the interfacial resistance also strongly suggests that the TaO 3 nanosheet is a self-standing solid electrolyte layer with an ultimate thinness of 1 nm. It has a wide band gap and a mesh structure with openings that are almost the same in size as the lithium ion, which prevents electronic conduction and allows the penetration of lithium ions, respectively.

Original languageEnglish
Pages (from-to)3509-3512
Number of pages4
JournalEnergy and Environmental Science
Issue number9
Publication statusPublished - 2011 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Chemistry
  • Pollution
  • Nuclear Energy and Engineering


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