Novel Pd–Cr electrocatalyst with low Pd content for coal electrolysis for hydrogen production

Ping Yu, Hao Jiang, Ren Peng, Hongze Ma, Ruheng Zheng, Jin Z. Zhang, Gerardine G. Botte

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Highly efficient Pd–Cr alloy electrocatalyst with various Cr/Pd ratios supported on carbon fibers (CFs) is prepared by an impregnation and hydrogen-reduction method, and used for hydrogen production from coal electrolysis for the first time. The catalyst is characterized using X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM) with Energy Dispersive X-Ray Spectroscopy (EDS). The results show that the Pd–Cr nanoparticles are evenly distributed on the carbon fibers surface. Electrochemical tests determine that the catalytic performance of the Pd–Cr electrodes is higher than that of pure Pd, and PdCr/CFs (3:7) exhibits the best performance, improving the activity for coal electrolysis by 37.1% compared to Pd. The electronic structure modulation of Pd–Cr alloy is important for coal electrooxidation, with the added benefit that Cr is corrosion resistant in acidic solution.

Original languageEnglish
Article number229175
JournalJournal of Power Sources
Volume483
DOIs
StatePublished - Jan 31 2021

Keywords

  • Carbon fibers
  • Coal electrolysis
  • Hydrogen production
  • Pd-Cr

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