固相法制备纳米CoMoO_(4)及其电化学性质研究

Preparation of Nanoscale CoMoO_(4) Materials by Solid-phase Chemical Synthesis Method and Study on Its Electrochemical Properties

钼基金属氧化物因其较高的稳定性和质量比容量被视为一种极具潜力的超级电容器电极材料。本文采用固相化学合成法制备了纳米级CoMoO_(4)材料。结果表明,CMO-PEG2电极在1 A/g电流密度下具有较高的比电容,约为306.64 F/g,在10 A/g电流密度下循环10 000次后,初始可逆容量保持在75.75%,卓越的电化学性能归功于所合成的CoMoO_(4)所具有的一维纳米结构良好的导电性、相互支撑的纳米线结构以及理想的比表面积。本工作为CoMoO_(4)的合成及其在超级电容器中的应用提供了新的思路。

Molybdenum-based metal oxide is regarded as a promising supercapacitor electrode material due to its high stability and mass specific capacity.A mild and efficient solid-phase chemical synthesis method was used to prepare nanoscale CoMoO_(4) materials.Electrochemical test results show that after introducing PEG2000 into the solid-phase reaction system,the prepared CMO-PEG2 electrode has a high specific capacitance at a current density of 1 A/g,about 306.64 F/g,and at a current density of 10 A/g the initial reversible capacity remained at 75.75%after 10000 cycles.Its excellent electrochemical performance is attributed to the good conductivity of the one-dimensional nanostructure of the synthesized CoMoO_(4),the mutually supported nanowire structure and the ideal specific surface area.This work provides new ideas for the synthesis of CoMoO_(4) and its application in supercapacitors.