Aged Co–Mo alloy thin film catalyst for hydrogen evolution reaction in acidic solution

KURU C.

Functional Materials Letters, cilt.14, sa.4, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 4
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1142/s1793604721510188
  • Dergi Adı: Functional Materials Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, Metadex
  • Anahtar Kelimeler: Catalyst, Co–Mo alloy, Hydrogen evolution reaction, Magnetron sputtering, Thin film
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

© World Scientific Publishing CompanyIn this study, aged Co–Mo (3:10) alloy film has been demonstrated as an efficient and durable catalyst for hydrogen evolution reaction (HER) in acidic solution. The Co–Mo alloy films with varying Co/Mo atomic ratios have been deposited by magnetron sputtering. The catalytic activity of Mo film is outperformed by the Co–Mo alloys, among which the Co–Mo (3:10) alloy exhibits the highest HER activity with an overpotential of 310 mV at 10 mA cm-2 current density, exchange current density of 1.74 × 10-4 A cm-2 and a Tafel slope of 61 mV dec-1. Combined with the good stability provided by the surface oxide layer, the aged Co–Mo (3:10) alloy is a promising catalyst for HER in acidic solutions.