Surface-Engineered Manganese Oxide via Sodium Borohydride for Optimized ORR Active Electrocatalyst.

ABSTRACT: Manganese oxide octahedral molecular sieves (OMS) have garnered attention as promising electrocatalysts for oxygen reduction reactions (ORRs) due to their cost-effectiveness as well as durability. However, their practical application is limited by inherent drawbacks such as low electrical conductivity and insufficient intrinsic catalytic activity. To overcome these challenges, we employed a surface reduction etching treatment using NaBH₄ to optimize the oxygen vacancy of OMS. The treatment with a 6 mmol/L NaBH₄ solution significantly increased the number of oxygen vacancies on the surface of OMS, which serve as crucial active sites facilitating the adsorption and dissociation of oxygen molecules, thereby enhancing ORR activity. Furthermore, the treatment effectively r

SUBMITTER: Kp J 

PROVIDER: S-EPMC12594001 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature