Highly active electrocatalyst cobalt-carbide nanoparticles synthesized by wet-chemistry method for hydrogen evolution reaction

Yi Heng Lin, Po Chia Huang, Sheng Chang Wang, Jow Lay Huang

Research output: Contribution to journalArticle

Abstract

Hydrogen is a promising alternative energy without greenhouse gas emissions. The transition metal carbides (TMCs) are considered a sustainable alternatives to noble metals in catalysis. Among the TMCs, CoxC (x = 2, 3) nanoparticles (NPs) act as an excellent electrocatalyst for hydrogen evolution reaction (HER) by water splitting. In our report, CoxC nanocomposites were synthesized by wet chemistry method using cobalt (II) acetate, sodium hydroxide as precursors and triethylene glycol as solvent. In addition, Co2C NPs were synthesized by similar wet chemistry method using cobalt (II) acetate as precursors and triethylene glycol, oleylamine as solvent. The cobalt carbide NPs exhibited high electrocatalytic activity. CoxC nanocomposites performed a -0.33 V onset potential and 91 mV/dec Tafel slope, while the Co2C NPs exhibited a better performance of -0.27 V and 60 mV/dec, respectively.

Original languageEnglish
Article number2040022
JournalModern Physics Letters B
Volume34
Issue number7-9
DOIs
Publication statusPublished - 2020 Mar 30

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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