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Low-Pressure Plasma-Processed Ruthenium/Nickel Foam Electrocatalysts for Hydrogen Evolution Reaction.

ABSTRACT: In this paper, low-pressure 95%Ar-5%H2, pure Ar, and 95%Ar-5%O2 plasmas were used for post-treatment of ruthenium (Ru) deposited on nickel foam (NF) (Ru/NF). Ru/NF was then tested as a catalyst for a hydrogen evolution reaction. Significant improvement in electrocatalytic activity with the lowest overpotential and Tafel slope was observed in an alkaline electrolyte (1 M KOH) with 95%Ar-5%O2 plasma processing on Ru/NF. Linear scanning electrical impedance spectroscopy (EIS) and cyclic voltammetry (CV) also indicate the lowest interfacial impedance and largest electrical double layer capacitance. Experimental results with 0.1 M phosphate buffered saline (PBS) and 0.5 M H2SO4 electrolytes were also demonstrated and compared.

SUBMITTER: Liu C

PROVIDER: S-EPMC9000553 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Low-Pressure Plasma-Processed Ruthenium/Nickel Foam Electrocatalysts for Hydrogen Evolution Reaction.

Liu Chen C Tseng Chia-Yun CY Wang Ying-Chyi YC Cheng I-Chun IC Chen Jian-Zhang JZ

Materials (Basel, Switzerland) 20220401 7

In this paper, low-pressure 95%Ar-5%H2, pure Ar, and 95%Ar-5%O2 plasmas were used for post-treatment of ruthenium (Ru) deposited on nickel foam (NF) (Ru/NF). Ru/NF was then tested as a catalyst for a hydrogen evolution reaction. Significant improvement in electrocatalytic activity with the lowest overpotential and Tafel slope was observed in an alkaline electrolyte (1 M KOH) with 95%Ar-5%O2 plasma processing on Ru/NF. Linear scanning electrical impedance spectros ...[more]

PMID: 35407938

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