Solvothermal Synthesis of Mesoporous 3D‐CuCo₂O₄ Hollow Tubes as Efficient Electrocatalysts for Methanol Electro‐Oxidation

Abstract

Transition metal oxides have attracted attention as promising electrode materials for energy storage and conversion devices with high electrochemical activity and stability. In this study, a simple and cost-effective solvothermal synthesis of rectangular 3D CuCo 2 O 4 hollow tubes have been developed for methanol electro-oxidation application. Electrochemical analysis shows that CuCo 2 O 4 hollow tubes exhibit superior electrochemical performance in terms of current density and cycling stability, with 75 mA cm À 2 and 90 % retention rate after 1000 cycles, respectively. The high electrochemical performances are mainly due to the morphological structure of CuCo 2 O 4 hollow tubes, which possess high surface area and porosity, resulting to a faster electron-ion transfer, enhanced reactivity and stability. Given that the synthesis of CuCo 2 O 4 hollow tubes involve a facile and cost-effective technique, the present approach, thus, opens a new era to novel materials for large-scale processes in different electrochemical applications.

Enhancement of photoelectrocatalytic performance of copper cobaltate nanoflowers modified with 5,10,15,20-tetrakis(4-carboxylphenyl)porphyrin for methanol oxidation under light

“…Transition metal oxides possess better electrocatalytic properties due to their larger surface area and shorter electron-ion transport pathways. 9 In comparison, bimetallic transition metal oxides have better electrical conductivity, increased active sites with multiple oxidation states, and superior cycling stability than monometallic ones. 10,11 Among them, CuCo 2 O 4 has been used in supercapacitors and Li-ion batteries because of its advantages such as environmental protection, low cost, and easy preparation.…”