Manganese Oxoborate-Based Nanostructures as Novel Oxygen Evolution Catalysts in Neutral Media

ELMACI G., İÇTEN O., ÖZER D., Ozgenc G., ERTEKİN Z., KÖSE D. A., ...Daha Fazla

CHEMNANOMAT, cilt.7, sa.12, ss.1340-1347, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 12
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1002/cnma.202100256
  • Dergi Adı: CHEMNANOMAT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Compendex
  • Sayfa Sayıları: ss.1340-1347
  • Anahtar Kelimeler: Borates, electrocatalysis, manganese oxoborate, oxygen evolution reaction, water oxidation, ELECTROCATALYTIC WATER OXIDATION, HYDROGEN-PRODUCTION, OXIDES, EFFICIENT, BIRNESSITE, ELECTRODES
  • Hacettepe Üniversitesi Adresli: Evet

Özet

The development of electrocatalysts for the OER (oxygen evolution reaction) process is an ongoing challenge in producing sustainable energy systems. Herein, we report QS (quasi-spherical), IR (irregular), and NR (nanorod) Mn2OBO3 (manganese oxoborate), modified with a carbon support, as candidate electrocatalysts for OER in a neutral medium. QS-, IR- and NR-Mn2OBO3 catalysts displayed low onset potentials of 201 mV, 205 mV, and 208 mV and Tafel slope results of 94 mV dec(-1), 97 mV dec(-1), and 106 mV dec(-1), respectively. As a result of the long-term stability tests, it was determined that the NR-Mn2OBO3 sample was extremely stable compared to the QS- and IR-catalysts. This work introduces a new Mn2OBO3/C composite catalyst that displays efficient OER performance at a neutral medium and provides a different perspective for catalyst development strategies.