Innovative Cost-Effective Nano-NiCo₂O₄ Cathode Catalysts for Oxygen Reduction in Air-Cathode Microbial Electrochemical Systems.

ABSTRACT: Microbial electrochemical systems (MESs) can harvest bioelectricity from varieties of organic matter in wastewater through electroactive microorganisms. Oxygen reduction reaction (ORR) in a cathode plays an important role in guaranteeing high power generation, which can be enhanced by cathode catalysts. Herein, the tiny crystalline grain nanocrystal NiCo₂O₄ is prepared via the economic method and utilized as an effective catalyst in air-cathode MESs. The linear sweep voltammetry results indicate that the current density of 2% nano-NiCo₂O₄/AC cathode (5.05 A/m²) at 0 V increases by 20% compared to the control (4.21 A/m²). The cyclic voltammetries (CVs) and the electrochemical impedance spectroscopy (EIS) showed that the addit

SUBMITTER: Zhou Q 

PROVIDER: S-EPMC9517631 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature