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, Miho Yamauchi, Ryuichi Ikeda, Tomokazu Yamamoto, Syo Matsumura, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)5536-5540
Number of pages5
JournalChemical Science
Volume9
Issue number25
DOIs
Publication statusPublished - 2018
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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