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

doi:10.1039/c8sc01460d

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 journal › Article › peer-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 language	English
Pages (from-to)	5536-5540
Number of pages	5
Journal	Chemical Science
Volume	9
Issue number	25
DOIs	https://doi.org/10.1039/c8sc01460d
Publication status	Published - 2018
Externally published	Yes

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Chemistry(all)

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10.1039/c8sc01460d

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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). / Kobayashi, Hirokazu; Yamauchi, Miho; Ikeda, Ryuichi; Yamamoto, Tomokazu; Matsumura, Syo; Kitagawa, Hiroshi.

In: Chemical Science, Vol. 9, No. 25, 2018, p. 5536-5540.

Research output: Contribution to journal › Article › peer-review

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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.",

author = "Hirokazu Kobayashi and Miho Yamauchi and Ryuichi Ikeda and Tomokazu Yamamoto and Syo Matsumura and Hiroshi Kitagawa",

note = "Funding Information: This work was supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST). STEM observations were performed as part of a program conducted by the Advanced Characterization Nanotechnology Platform sponsored by the MEXT, Japan. Publisher Copyright: {\textcopyright} 2018 The Royal Society of Chemistry.",

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AU - Kobayashi, Hirokazu

AU - Yamauchi, Miho

AU - Ikeda, Ryuichi

AU - Yamamoto, Tomokazu

AU - Matsumura, Syo

AU - Kitagawa, Hiroshi

N1 - Funding Information: This work was supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST). STEM observations were performed as part of a program conducted by the Advanced Characterization Nanotechnology Platform sponsored by the MEXT, Japan. Publisher Copyright: © 2018 The Royal Society of Chemistry.

PY - 2018

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N2 - 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.

AB - 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.

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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)

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