Integrated super capacitor electrode material preparation method and applications thereof

Abstract

The invention discloses an integrated super capacitor electrode material preparation method and applications thereof. The preparation method comprises the following steps: cobalt salt, nickel salts, and sulfonium salt are dissolved in a solvent and are uniformly stirred and mixed; the above solution is transferred to a high pressure reaction kettle, and an electrode carrier is put in the kettle; the high pressure reaction kettle is sealed and then placed at a temperature of 100 to 160 DEG C for reaction for 2 to 12 h; and the electrode carrier is washed and dried to obtain the integrated super capacitor electrode material. The invention also provides applications of the above integrated super capacitor electrode material in manufacturing of the super capacitor. Raw materials of the preparation method of the invention are cheap and easy to obtain, the synthesis technology is simple and easy to realize, the product quality is stable, the technology repetition performance is good, and the electrode preparation material has excellent super capacitance performance.

Description

technical field [0001] The invention relates to the synthesis of inorganic materials and the application of supercapacitor properties, in particular to a preparation method and application of an integral supercapacitor electrode material. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the advantages of large power density, excellent rate performance, fast charge and discharge rates, and long cycle life, which have attracted extensive research in industry and academia. [0003] Electrode materials play a crucial role in the performance of supercapacitors. Commonly used active materials for electrode materials include: porous carbon materials, transition metal oxide and hydroxide materials, conductive polymers, metal halides, etc. Among them, transition metal oxide materials have greater supercapacitive performance because of their variable metal valence states, which are more conducive to redox reactions in working conditions. ...

AI Technical Summary

Problems solved by technology

However, the methods reported in the literature are two-step reactions. The first step is to prepare cobalt-nickel oxyhydroxides, and then carry out ion exchange, and Na2S, S, H2S, thiourea and other reactions to get NiCo2S4 (such as the literature RSCAdv., 2014, 4, 6998; Nanoscale, 2013, 5, 8879; Chem.Commun., 2013, 49, 10178; Nanoscale, 2014, 6, 9824, etc.), the disadvantage of the two-step method is that the process is complicated and the reaction The time is longer, which not only increases the production cost, but also is not conducive to the expansion of scale production

Another problem that currently exists is that most of the literature only obtains NiCo2S4 powders, rather than obtaining monolithic electrode materials in one step, which requires the addition of other binders in the later stage. Mixing the preparation of electrodes for supercapacitors makes the preparation process more cumbersome, which not only increases the resistance, but also is not conducive to ion diffusion, so that the electrochemical performance of the material cannot be fully exerted

[0005] Retrieval of literature shows that there is no one-step method to introduce sulfur source directly loaded on the electrode carrier to obtain monolithic NiCo2S4Reports on Composite Electrode Materials

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