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Issue 9, 2011
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Tantalum oxide nanomesh as self-standing one nanometre thick electrolyte

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Abstract

Tantalum oxide (TaO3) nanosheets coated on the surface of a LiCoO2 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 TaO3 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.

Graphical abstract: Tantalum oxide nanomesh as self-standing one nanometre thick electrolyte

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Publication details

The article was received on 01 Apr 2011, accepted on 20 May 2011 and first published on 15 Jul 2011


Article type: Paper
DOI: 10.1039/C1EE01389K
Citation: Energy Environ. Sci., 2011,4, 3509-3512
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    Tantalum oxide nanomesh as self-standing one nanometre thick electrolyte

    X. Xu, K. Takada, K. Fukuda, T. Ohnishi, K. Akatsuka, M. Osada, B. T. Hang, K. Kumagai, T. Sekiguchi and T. Sasaki, Energy Environ. Sci., 2011, 4, 3509
    DOI: 10.1039/C1EE01389K

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