CuFe electrocatalyst for hydrogen evolution reaction in alkaline electrolysis

Mallikarjun Bhavanari, Kan Rong Lee, Chung Jen Tseng, I. Hsuan Tang, Hao Hsuan Chen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The development of high performance, stable catalyst with non-precious metals for electrochemical hydrogen evolution reaction for alkaline electrolysis is in demand. Here-in, we report the synthesis of CuFe layered double hydroxide (LDH) electrocatalyst on nickel foam via facile hydrothermal method. In alkaline electrolysis with 1 M NaOH electrolyte, CuFe LDH as cathode requires an overpotential of 159 mV to generate current density of 10 mA cm−2. Which is ca. 51 mV and 7 mV lower than NiFe LDH and NiRu LDH. CuFe LDH exhibits significant electrocatalytic activity for HER. The higher catalytic activity of CuFe LDH compared to NiFe LDH may be achieved with higher proton adsorption by Cu compared to Ni. Also, the efficient charge transfer with interconnected LDH layers, favourable three dimensional structure facilitating easy electrolyte transfer to the active sites and hydrogen gas diffusion. This work may help in developing low cost and efficient hydroxide catalyst.

Original languageEnglish
Pages (from-to)35886-35895
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number72
DOIs
StatePublished - 19 Oct 2021

Keywords

  • Catalyst
  • CuFe layered double hydroxide
  • Electrocatalyst
  • Electrochemical water splitting
  • Electrolysis
  • Hydrogen evolution reaction

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