Issue 25, 2018
From the journal:

Chemical Science

Double enhancement of hydrogen storage capacity of Pd nanoparticles by 20 at% replacement with Ir; systematic control of hydrogen storage in Pd–M nanoparticles (M = Ir, Pt, Au)†

Hirokazu Kobayashi,*ab   Miho Yamauchi,c   Ryuichi Ikeda,a   Tomokazu Yamamoto,de   Syo Matsumuradef  and  Hiroshi Kitagawa ORCID logo *afg  

* Corresponding authors

a Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, Japan
E-mail: hkobayashi@kuchem.kyoto-u.ac.jp, kitagawa@kuchem.kyoto-u.ac.jp

b JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, Japan

c International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan

d Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka, Japan

e The Ultramicroscopy Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka, Japan

f Inamori Frontier Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan

g Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto, Japan

Abstract

We report on binary solid-solution nanoparticles (NPs) composed of Pd and Ir, which are not miscible at the equilibrium state of the bulk, for the first time, by means of a process of hydrogen absorption/desorption from core (Pd)/shell (Ir) NPs. Only 20 at% replacement with Ir atoms doubled the hydrogen-storage capability compared to Pd NPs, which are a representative hydrogen-storage material. Furthermore, the systematic control of hydrogen concentrations and the corresponding pressure in Pd and Pd–M NPs (M = Ir, Pt, Au) have been achieved based on the band filling control of Pd NPs.

Graphical abstract: Double enhancement of hydrogen storage capacity of Pd nanoparticles by 20 at% replacement with Ir; systematic control of hydrogen storage in Pd–M nanoparticles (M = Ir, Pt, Au)

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Article information

DOI
https://doi.org/10.1039/C8SC01460D
Article type
Edge Article
Submitted
30 Mar 2018
Accepted
08 May 2018
First published
24 May 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2018,9, 5536-5540

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Double enhancement of hydrogen storage capacity of Pd nanoparticles by 20 at% replacement with Ir; systematic control of hydrogen storage in Pd–M nanoparticles (M = Ir, Pt, Au)

H. Kobayashi, M. Yamauchi, R. Ikeda, T. Yamamoto, S. Matsumura and H. Kitagawa, Chem. Sci., 2018, 9, 5536 DOI: 10.1039/C8SC01460D

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