Synthesis of MoS<sub>2</sub>/Graphene Hetero-Film Photocatalyst and Li-Oxygen Battery Application

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Celt A. C., Cayirli M., ÖZDEN R. C., LÖKÇÜ E., ANIK M.

CHEMELECTROCHEM, cilt.12, sa.1, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 1
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1002/celc.202400577
  • Dergi Adı: CHEMELECTROCHEM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC, MEDLINE, Directory of Open Access Journals
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

In this study, bilayer MoS2 was synthesized on graphene film using chemical vapor deposition (CVD) to get a hetero-film photo-catalyst for the photo-assisted charging of Li-oxygen battery. The synthesized hetero-film exhibited an optical band gap of 1.8 eV and a valence band edge potential of -1.23 V-Ag/(AgCl) (2.04 VLi+/Li). Fast-responding photocurrents in the microampere range were achieved through on-off cycles under visible-light irradiation. The anodic nature of the photocurrents indicated that the synthesized semiconductor film was n-type. Photo-assisted testing demonstrated that the MoS2/graphene hetero-film photo-catalyst significantly reduced the charging potential and increased the discharging potential at a current density of 0.1 mA cm(-2), thereby greatly enhancing the cyclic performance of the Li-oxygen battery.