Synthesis method of electrode material cobalt tungstate for supercapacitor

A technology for supercapacitors and electrode materials, applied in hybrid capacitor electrodes, chemical instruments and methods, cobalt compounds, etc., can solve the problems of complex preparation process, long reaction time, cumbersome process, etc., and achieve simple synthesis method, low cost of raw materials, The effect of improving capacitor performance
CN110776016AInactive Publication Date: 2020-02-11HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2020-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a synthesis method of an electrode material cobalt tungstate for a supercapacitor. The synthesis method comprises: carrying out mixing dissolving on a cobalt salt and deionizedwater to obtain a solution A, carrying out mixing dissolving on a morphology regulator, a tungstate and deionized water to obtain a solution B, mixing the solution A and the solution B according to avolume ratio of 1:1, carrying out a precipitation reaction, cooling after the precipitation reaction is finished, washing, and drying to obtain cobalt tungstate. According to the invention, based on the high conductivity of the tungstate, the cobalt tungstate prepared by combining cobalt ions and tungstate ions is used as a capacitor electrode material, so that the high reversibility, the excellent cycle performance and the excellent stability can be achieved, and the prepared cobalt tungstate has a coralline-like structure, has a specific surface area, can substantially improve the specific capacitance value of the electrode material, and further has good electrochemical performance.
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Description

technical field

[0001] The invention relates to the technical field of preparation of electrode materials for supercapacitors, in particular to a method for synthesizing cobalt tungstate as an electrode material for supercapacitors. Background technique

[0002] As a new type of energy storage device, supercapacitors have the advantages of high power density and long charging and discharging time. As the main evaluation standard of supercapacitors, the selection of electrode materials for supercapacitors is also particularly important. The types of supercapacitor electrode materials mainly include carbon materials, conductive polymers and metal oxides. However, due to the shortcomings of carbon materials and conductive polymers in terms of capacitive and cycle stability, more and more people are beginning to focus on on metal oxides.

[0003] Metal oxides, especially transition metal oxides, have received more and more attention due to their environmental friendliness, high...

Claims

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