Solid-State Ball-Milling of Co3O4 Nano/Microspheres and Carbon Black Endorsed LaMnO3 Perovskite Catalyst for Bifunctional Oxygen Electrocatalysis

Developing a highly stable and non-precious, low-cost, bifunctional electrocatalyst is essential for energy storage conversion devices due to the increasing demand from consumers. Therefore, fabrication of an emerging focus promotion dissemination storage/conversion devices. Spinel perovskite transition metal oxides have been widely explored as efficient electrocatalysts replace noble metals in fuel cell metal-air batteries. In this work, we developed catalyst oxygen reduction evolution reaction (ORR/OER) study using mechanochemical route coupling cobalt oxide nano/microspheres carbon black particles incorporated lanthanum manganite (LaMnO3@C-Co3O4) composite. It was synthesized through simple less-time consuming solid-state ball-milling method. The LaMnO3@C-Co3O4 composite characterized by scanning electron microscopy, dispersive X-ray spectroscopy, transmission Brunauer-Emmett-Teller (BET) analysis, diffraction micro-Raman spectroscopy techniques. electrocatalysis results showed excellent electrochemical activity towards ORR/OER kinetics catalyst, compared with Pt/C, bare LaMnO3@C, LaMnO3@C-RuO2 catalysts. observed suggested that newly can be used potential candidate air-cathodes