Sulfurized Co-Mo Alloy Thin Films as Efficient Electrocatalysts for Hydrogen Evolution Reaction

KURU C., ALAF M., ŞİMŞEK Y. E., Tocoglu U.

Catalysis Letters, cilt.152, sa.2, ss.315-323, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 152 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s10562-021-03639-z
  • Dergi Adı: Catalysis Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Chimica, Compendex
  • Sayfa Sayıları: ss.315-323
  • Anahtar Kelimeler: Alloy, Catalyst, Co, Hydrogen evolution reaction, MoS2
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.Here, we successfully fabricated sulfurized Co-Mo alloy thin film electrodes with different compositions and studied their catalytic properties for hydrogen evolution reaction (HER). The resulting alloy films surpass the HER activity of the MoS2 counterpart, whose electronic states and morphology are modified by the Co atoms, leading to enhanced HER activity. The best performing electrode at 23 at.% Co concentration exhibits a 272 mV lower overpotential than the MoS2 film at 10 mA cm−2 current density and a Tafel slope of 62 mV dec−1. Combined with the good stability, the sulfurized Co–Mo alloy thin films are promising catalysts for the electrocatalytic HER in acidic solution. Graphical Abstract: [Figure not available: see fulltext.]