▎ 摘　　要

NOVELTY - Bifunctional cost-effective electrocatalyst comprises Ni0.6Mn0.4Co2O4 spinel oxide, where the spinel oxide comprises transition metals comprising 0.6 M nickel (II) acetate, 0.4 M manganese (II) acetate and 2 M cobalt (II) acetate. The 0.6 M nickel (II) acetate, 0.4 M manganese (II) acetate and 2 M cobalt (II) acetate are dispersed in 30 milliliter water using ultrasonication for 3 hours and then hydrothermally treated to obtain the Ni0.6Mn0.4Co204 spinel oxide, and a co-doped reduced graphene oxide (rGO). The co-doped reduced graphene oxide is prepared by sonicating 20 milligrams graphene oxide for exfoliation in 20 ml water using ultrasonication for 2 hours. 40 mg prepared Ni0.6Mn0.4Co204 spinel oxide and an appropriate amount of thiourea are blended with the co-doped reduced graphene oxide solution, and then dispersed for 1 hour followed by hydrothermally treated at 180 degrees C for 12 hours, washed and dried at 60 degrees C for 12 hours to obtain a composite. USE - Bifunctional cost-effective electrocatalyst for catalyzing oxygen evolution reaction. ADVANTAGE - The bifunctional cost-effective electrocatalyst has enriched electronic properties due to the shorter diffusion path length, and enhanced electrocatalytic behavior and improved stability with no degradation of catalyst even after 25 hours of operation. DETAILED DESCRIPTION - Bifunctional cost-effective electrocatalyst comprises Ni0.6Mn0.4Co2O4 spinel oxide, where the spinel oxide comprises transition metals comprising 0.6 M nickel (II) acetate, 0.4 M manganese (II) acetate and 2 M cobalt (II) acetate. The 0.6 M nickel (II) acetate, 0.4 M manganese (II) acetate and 2 M cobalt (II) acetate are dispersed in 30 milliliter water using ultrasonication for 3 hours and then hydrothermally treated to obtain the Ni0.6Mn0.4Co204 spinel oxide, and a co-doped reduced graphene oxide (rGO). The co-doped reduced graphene oxide is prepared by sonicating 20 milligrams graphene oxide for exfoliation in 20 ml water using ultrasonication for 2 hours. 40 mg prepared Ni0.6Mn0.4Co204 spinel oxide and an appropriate amount of thiourea are blended with the co-doped reduced graphene oxide solution, and then dispersed for 1 hour followed by hydrothermally treated at 180 degrees C for 12 hours, washed and dried at 60 degrees C for 12 hours to obtain a composite. The composite is calcinated in argon atmosphere at 350 degrees C for 3 hours to obtain nickel-co-doped reduced graphene oxide composite. The obtained nickel-doped composite is modified in a carbon cloth to obtain modified reduced graphene oxide composite, which act as electrocatalyst for catalyzing oxygen evolution reaction (OER).