Hydrogen Incorporation in Metals by Electrochemical Reaction

Fukumuro, Naoki; Yae, Shinji

doi:10.4139/sfj.71.314

Journal of the Surface Finishing Society of Japan

2020

DOI: 10.4139/sfj.71.314

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Hydrogen Incorporation in Metals by Electrochemical Reaction

Naoki Fukumuro

Shinji Yae

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2024

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Cited by 2 publications

References 38 publications

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Influence of Co-Deposited Hydrogen on Microstructure of Electrodeposited Platinum Films from Chloro-Complex Solution

Fukumuro,

Kinoshita,

Hashimoto

et al. 2024

J. Japan Inst. Metals

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The influence of co-deposited hydrogen on microstructure of electrodeposited platinum (Pt) films was investigated using thermal desorption spectroscopy, X-ray diffraction and transmission electron microscopy. The Pt films were potentiostatically electrodeposited on a gold foil from a tetrachloroplatinate(Ⅱ) solution at 0.1 ~ -0.3 V vs. Ag/AgCl. From the thermal desorption spectra of hydrogen, a broad desorption peak at around 650 K was observed in the Pt films deposited at 0.1 ~ -0.2 V vs. Ag/AgCl, and a pronounced desorption peak at around 500 K was observed in the Pt films deposited at -0.3 V vs. Ag/AgCl. As the deposition potential was more negative, the current efficiency of Pt deposition was lower and the hydrogen concentration of Pt films was higher.These electrodeposited Pt films were consisted of fine grains of 9 -17 nm, and the lattice parameter decreased with increasing hydrogen concentration. After heat treatment at 500 K, reduction of lattice contraction and increase in grain size were observed in the Pt films with higher hydrogen concentrations. The increase in grain size by the heat treatment was larger as the hydrogen concentration of Pt films was higher. Thus, it is clear that such grain growth observed in the electrodeposited Pt films was enhanced by hydrogen-induced superabundant vacancies.

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Influence of Co-Deposited Hydrogen on Microstructure of Electrodeposited Platinum Films from Chloro-Complex Solution

Fukumuro,

Kinoshita,

Hashimoto

et al. 2024

J. Japan Inst. Metals

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パラジウム電析膜中の水素の存在状態に与える浴温の影響

HASHIMOTO,

NAKAMURA,

FUKUMURO

et al. 2024

Journal of the Surface Finishing Society of Japan

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Hydrogen Incorporation in Metals by Electrochemical Reaction

Cited by 2 publications

References 38 publications

Influence of Co-Deposited Hydrogen on Microstructure of Electrodeposited Platinum Films from Chloro-Complex Solution

Influence of Co-Deposited Hydrogen on Microstructure of Electrodeposited Platinum Films from Chloro-Complex Solution

パラジウム電析膜中の水素の存在状態に与える浴温の影響

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