Effects of pre-oxidation conditions on microstructure evolution and hydrogen evolution reaction performance of nano-porous Ag

Zijun Zhao; Wenyu Chen; Wanpeng Li; Xiaodong Liang; Hao Yan; Xu Wang; J.C. Huang; Ming Wu

Journal of Materials Research and Technology (Nov 2021)

Effects of pre-oxidation conditions on microstructure evolution and hydrogen evolution reaction performance of nano-porous Ag

Zijun Zhao,
Wenyu Chen,
Wanpeng Li,
Xiaodong Liang,
Hao Yan,
Xu Wang,
J.C. Huang,
Ming Wu

Affiliations

Zijun Zhao: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, PR China
Wenyu Chen: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong
Wanpeng Li: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong
Xiaodong Liang: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, PR China
Hao Yan: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, PR China
Xu Wang: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, PR China; Corresponding author.
J.C. Huang: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong; Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan, ROC; Corresponding author.
Ming Wu: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, PR China

Journal volume & issue: Vol. 15
pp. 2221 – 2226

Abstract

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A novel strategy was developed to fabricate nano-porous silver (NPS) with a three-dimensional bi-continuous open porous structure. A high temperature oxidation (HTO) craft and a strong oxidant-assisted low-temperature oxidation method were used to tune the dealloying of AgXCu(1-X) ribbons. The NPS fabricated from the Ag15Cu85 ribbon by the HTO pretreatment exhibited a ligament size of ∼841 nm after 1 h of dealloying. However, the NPS fabricated from the Ag15Cu85 ribbon by the H2O2 craft exhibited a ligament size of ∼61 nm after 1 h of dealloying. In addition, the NPS fabricated by the strong oxidant-assisted dealloying craft exhibited an ultrahomogeneous ligament pore structure and a higher Tafel slope in regard to its hydrogen evolution reaction.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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