Formation of different types nanoporous composite structure by dealloying of Ag and Ni containing Al-Cu-Ti base amorphous precursor alloys

Jae Ik Hyun, Heug Soo Noh, Kyeongho Kong, Won Tae Kim, Do Hyang Kim

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of minor addition of Ag and Ni on the dealloying behavior, nanoporous structure, and electrocatalytic property has been investigated using Al45Cu45Ti10 amorphous precursor alloy. The dealloying kinetics is significantly suppressed due to low diffusion rate and enhanced passivation effect by addition of Ag and Ni. Two different types of nanoporous composite structure are fabricated, nanoporous Cu incorporated with Ag particles and bi-metallic nanoporous Cu-Ni. The resulting multi-component nanoporous composites exhibit improved electrocatalytic property for BH4 oxidation. This study offers a strategy for fabricating nanoporous composites to replace precious metal electrocatalysis.

Original languageEnglish
Article number111093
JournalMaterials Characterization
Volume175
DOIs
Publication statusPublished - 2021 May

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the government ( MSIT ) (No. 2020R1A5A1019131 , 2020R1H1A2013655 ).

Publisher Copyright:
© 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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