Laser fabrication of Pt anchored Mo2C micropillars as integrated gas diffusion and catalytic electrode for proton exchange membrane water electrolyzer

Haifeng Yuan, Lili Zhao, Bin Chang, Yuke Chen, Tianjiao Dong, Jietong He, Di Jiang, Wanqiang Yu, Hong Liu*, Weijia Zhou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The efficient electrocatalysts for hydrogen evolution reaction (HER) are indispensable. Herein, Mo2C micropillars decorated with Pt nanoparticles (<4 nm) on Mo foil (Pt/Mo2C-L/Mo) are synthesized by laser ablation in a focused mode in CH4 atmosphere and laser-induced reduction in an under-focused mode in Ar/H2 atmosphere. The Pt/Mo2C-L/Mo possesses excellent HER performance (21 mV at 10 mA cm−2) and stability (1317 mA cm−2 for 100 h) in acid media. Integrated gas diffusion and catalytic electrodes of Pt/Mo2C-L/Mo are constructed by laser in a mixed model and used in proton exchange membrane water electrolyzer (PEMWE). The voltage of the constructed PEMWE of (−) Pt/Mo2C-L/Mo || IrO2/Ti (+) (1.55 V at 10 mA cm−2) is lower than that of (−) 20 wt.% Pt/C || IrO2 (+) (1.69 V at 10 mA cm−2) for overall water splitting. This work provides a universal laser synthetic strategy of integrated electrodes with promising application in the field of hydrogen energy.

Original languageEnglish (US)
Article number121455
JournalApplied Catalysis B: Environmental
Volume314
DOIs
StatePublished - Oct 5 2022

Keywords

  • Hydrogen evolution reaction
  • Integrated electrode
  • Laser synthesis
  • Molybdenum carbide
  • PEMWE electrolyzer

ASJC Scopus subject areas

  • Catalysis
  • General Environmental Science
  • Process Chemistry and Technology

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