A preparation method of graphene-based button-type supercapacitor with low internal resistance and high specific energy

A supercapacitor, graphene-based technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor separators, hybrid capacitor electrodes, etc., can solve the problems of high contact resistance, limited cycle life, low specific energy, etc., to achieve high Effects of specific capacity, low internal resistance, and reduced internal resistance

CN106653397BActive Publication Date: 2019-01-22芜湖洛菲斯企业管理咨询有限公司

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: 芜湖洛菲斯企业管理咨询有限公司
Publication Date: 2019-01-22

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Abstract

The invention provides a preparation method for a low-internal-resistance and high-specific-energy graphene-based button type supercapacitor. The preparation method is characterized in that the low-internal-resistance and high-specific-energy graphene-based button type supercapacitor is prepared by the procedures of preparation of an electrode, preparation of a conductive glue solution, preparation of the button type supercapacitor and the like. By adding graphene, the preparation of the low-internal-resistance and high-specific-energy graphene-based button type supercapacitor is realized and the preparation process of the supercapacitor is lowered; by adding graphene to the electrode and the conductive glue in a powder state and in a liquid state, an adverse phenomenon of graphene agglomeration is avoided consequently; meanwhile, by introducing the high-conductivity and high-purity graphene material to the preparation process of the button type supercapacitor, the specific capacity of the supercapacitor is improved, and the internal resistance value of the supercapacitor is also lowered; and in addition, water content is not added in the electrode preparation process, so that internal electrode corrosion and generation of gas of the supercapacitor can be avoided.

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Description

technical field

[0001] The invention relates to a method for preparing a supercapacitor, in particular to a method for preparing a graphene-based button-type supercapacitor with low internal resistance and high specific energy. Background technique

[0002] At present, the button-type supercapacitor is a new type of high-efficiency energy storage device, which has the advantages of short current response time, large charge and discharge current, high charge and discharge efficiency, wide operating temperature range, long cycle life and environmental protection, making it in It has been widely used in industrial electronics, consumer electronics, UPS, electric toys, driving recorders and other fields. At this stage, the button-type supercapacitor is mainly prepared by the following process: the conductive glue is added dropwise on the inside of the positive and negative shells, and then the positive and negative electrodes of a certain size are bonded to the shell, and the po...

Claims

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