Preparation method for supercapacitor electrode material containing MnCo2O4.5

Abstract

The invention provides a preparation method for a supercapacitor electrode material containing MnCo2O4.5. The preparation method comprises the steps of enabling 3.5-4.5mmol of Co(NO3)2.6H2O, 9-11mmol of CO(NH2)2 and 4.0-4.5mL of Mn(NO3)2 solution to be dissolved in 30mL of distilled water and mixed to form uniform solution, placing 2cm*3cm foamed nickel in the uniform solution, performing a reaction for 10-12h at 87-92 DEG C, naturally cooling the uniform solution to room temperature, taking out a foamed nickel substrate, washing the foamed nickel substrate clean with distilled water, drying the foamed nickel substrate for 12-14h at 60-70 DEG C, performing calcination for 3-4h at 280-320 DEG C, and obtaining the foamed nickel-based MnCo2O4.5 nanowire electrode material. MnCo2O4.5 obtained through the method serves as the supercapacitor electrode material, not only is the raw material rich in reserve volume, easy to obtain and low in price, but also super capacitive performance is high, high rate performance is good, and cycle performance is stable.

Description

technical field [0001] The invention relates to a preparation method of an electrode material of a supercapacitor. Background technique [0002] A supercapacitor is an energy storage element that uses the electrochemical process on the surface of an electrode / solution to store charges, also called an electrochemical capacitor. According to different energy storage mechanisms, supercapacitors can be divided into electric double-layer capacitors, Faraday quasi-capacitors and hybrid capacitors. Supercapacitors are developing towards high specific power and high specific energy. Hybrid supercapacitors with transition metal oxides and porous carbon as positive and negative electrodes are an important development direction in the future. During charging and discharging, the energy conversion process of electrochemical reaction and the energy storage process of the electric double layer are carried out simultaneously and equally at the two poles. Electric double-layer capacitors ...

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Problems solved by technology

The current research mainly focuses on transition metal oxides such as Ru, Mn, Co and Ni, among w