Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size

Kohei Kusada, Hirokazu Kobayashi, Ryuichi Ikeda, Hitoshi Morita, Hiroshi Kitagawa

研究成果: ジャーナルへの寄稿総説査読

10 被引用数 (Scopus)

抄録

We first report the hydrogen storage properties of Rh nanoparticles having a diameter over 10nm and the change in the temperature dependences of hydrogen storage based on particle sizes of Rh nanoparticles. Hydrogen storage was investigated by hydrogen pressurecomposition isotherm and solid-state 2HNMR measurements. We demonstrate that Rh nanoparticles with dimensions of ca. 10nm absorb hydrogen similar to smaller Rh nanoparticles; however, the enthalpy of hydrogen storage in Rh nanoparticles is changed from exothermic to endothermic with increasing particle size, with a critical size between 7.1 and 10.5 nm. The thermodynamics of hydrogen storage in Rh can be tuned by controlling the particle size.

本文言語英語
ページ(範囲)55-56
ページ数2
ジャーナルChemistry Letters
42
1
DOI
出版ステータス出版済み - 1月 2013
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学一般

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