Electrocatalytic activity of layered MAX phases for the hydrogen evolution reaction

K. P. Akshay Kumar, Osamah Alduhaish, Martin Pumera

Research output: Contribution to journalArticlepeer-review

Abstract

The hydrogen evolution reaction (HER) is important for the advancement of next-generation electrochemical energy devices. The search for an alternative inexpensive catalyst for energy conversion to replace expensive and rare noble metals is of high priority. There has been a significant push to investigate electrocatalysis of various layered materials for hydrogen evolution. However, the electrocatalytic activity of layered MAX phases remains largely unexplored. Herein, electrocatalytic activity studies of MAX (Ti2AlC, Ta2AlC, Ti2SnC, Ti3SiC2, V2AlC, Mo2TiAlC2, and Cr2AlC) phases are conducted. Material and electrochemical characterization are carried out to understand the morphology and catalytic activity, respectively. From Tafel slope analysis, it was found that proton adsorption is the rate-limiting step for all the MAX phases studied. Double transition-metal MAX carbides (Mo2TiAlC2) showed better catalytic activity for HER than single transition-metal MAX carbides.

Original languageEnglish
Article number106977
JournalElectrochemistry Communications
Volume125
DOIs
Publication statusPublished - 2021 Apr

Bibliographical note

Funding Information:
This work was supported by the Distinguished Scientist Fellowship Program (DSFP) of King Saud University , Riyadh, Saudi Arabia.

Publisher Copyright:
© 2021 The Author(s)

All Science Journal Classification (ASJC) codes

  • Electrochemistry

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