Synthesis of ultrasmall Li-Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties

Yumi Miyamoto, Yoshiyuki Kuroda, Tsubasa Uematsu, Hiroyuki Oshikawa, Naoya Shibata, Yuichi Ikuhara, Kosuke Suzuki, Mitsuhiro Hibino, Kazuya Yamaguchi, Noritaka Mizuno

Research output: Contribution to journalArticle

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Abstract

The efficient surface reaction and rapid ion diffusion of nanocrystalline metal oxides have prompted considerable research interest for the development of high functional materials. Herein, we present a novel low-temperature method to synthesize ultrasmall nanocrystalline spinel oxides by controlling the hydration of coexisting metal cations in an organic solvent. This method selectively led to Li-Mn spinel oxides by tuning the hydration of Li+ ions under mild reaction conditions (i.e., low temperature and short reaction time). These particles exhibited an ultrasmall crystallite size of 2.3nm and a large specific surface area of 371±15 m 2 g '1. They exhibited unique properties such as unusual topotactic Li +/H + ion exchange, high-rate discharge ability, and high catalytic performance for several aerobic oxidation reactions, by creating surface phenomena throughout the particles. These properties differed significantly from those of Li-Mn spinel oxides obtained by conventional solid-state methods.

Original languageEnglish
Article number15011
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - 2015 Oct 12

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Oxides
Ion exchange
Hydration
Metals
Ions
Surface phenomena
Functional materials
Surface reactions
Crystallite size
Specific surface area
Organic solvents
Cations
Tuning
Oxidation
Temperature
spinell

ASJC Scopus subject areas

  • General

Cite this

Miyamoto, Y., Kuroda, Y., Uematsu, T., Oshikawa, H., Shibata, N., Ikuhara, Y., ... Mizuno, N. (2015). Synthesis of ultrasmall Li-Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties. Scientific Reports, 5, [15011]. https://doi.org/10.1038/srep15011

Synthesis of ultrasmall Li-Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties. / Miyamoto, Yumi; Kuroda, Yoshiyuki; Uematsu, Tsubasa; Oshikawa, Hiroyuki; Shibata, Naoya; Ikuhara, Yuichi; Suzuki, Kosuke; Hibino, Mitsuhiro; Yamaguchi, Kazuya; Mizuno, Noritaka.

In: Scientific Reports, Vol. 5, 15011, 12.10.2015.

Research output: Contribution to journalArticle

Miyamoto, Y, Kuroda, Y, Uematsu, T, Oshikawa, H, Shibata, N, Ikuhara, Y, Suzuki, K, Hibino, M, Yamaguchi, K & Mizuno, N 2015, 'Synthesis of ultrasmall Li-Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties', Scientific Reports, vol. 5, 15011. https://doi.org/10.1038/srep15011
Miyamoto, Yumi ; Kuroda, Yoshiyuki ; Uematsu, Tsubasa ; Oshikawa, Hiroyuki ; Shibata, Naoya ; Ikuhara, Yuichi ; Suzuki, Kosuke ; Hibino, Mitsuhiro ; Yamaguchi, Kazuya ; Mizuno, Noritaka. / Synthesis of ultrasmall Li-Mn spinel oxides exhibiting unusual ion exchange, electrochemical, and catalytic properties. In: Scientific Reports. 2015 ; Vol. 5.
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AU - Shibata, Naoya

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AU - Suzuki, Kosuke

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