Doped NaMnOx cathodes for Zn-MnO2 batteries for improved capacity and rechargeability

Akbas Y., Daricioglu N. O., ÖZTÜRK T.

MATERIALS RESEARCH BULLETIN, vol.182, 2025 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 182
  • Publication Date: 2025
  • Doi Number: 10.1016/j.materresbull.2024.113159
  • Journal Name: MATERIALS RESEARCH BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Middle East Technical University Affiliated: Yes

Abstract

Zn-MnO2 batteries are safe, low cost, and have a high energy density comparable to Li-ion batteries. This study focuses on finding a new MnO2-based cathode composition for rechargeable mildly acidic Zn-MnO2 battery. For this purpose, a combinatorial approach was used, and thick film cathodes were deposited on nickel substrates using sputter targets MnO2, Na0.7MnO2, NiO and Bi2O3. A total of 36 cathodes were produced over a wide compositional range. The study has shown two regions of high rechargeable capacity, one centered on Bi0.02Na0.63Ni0.02Mn0.33Oxand the other on Bi0.04Na0.37Ni0.06Mn0.53Oxto be developed as cathodes using conventional slurry method.