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A kind of preparation method of carbon particle/manganese dioxide composite electrode material

A manganese dioxide and composite electrode technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of high internal resistance, poor charge-discharge cycle stability, etc., and achieve high conductivity, good crystallization, The effect of simple and economical process

Active Publication Date: 2018-01-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention solves the problems of high internal resistance and poor charge-discharge cycle stability existing in existing manganese dioxide electrode materials, and provides a preparation method of carbon particle / manganese dioxide composite electrode materials

Method used

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  • A kind of preparation method of carbon particle/manganese dioxide composite electrode material

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specific Embodiment approach 1

[0021] Specific embodiment one: the preparation method of a kind of carbon particle / manganese dioxide composite electrode material described in this embodiment is specifically carried out according to the following steps:

[0022] 1. Mix manganese sulfate, potassium permanganate and distilled water evenly, then stir for 1h to 2h to obtain a mixed solution;

[0023] The quality of described manganese sulfate and the volume ratio of distilled water are 1g:(350~2000)mL; The quality of described potassium permanganate and the volume ratio of distilled water are 1g:(100~150)mL;

[0024] 2. Put the mixed solution in a reaction kettle lined with polytetrafluoroethylene, then immerse the substrate in the mixed solution, and conduct a hydrothermal reaction at a temperature of 100°C to 180°C for 12h to 24h to obtain The reacted product, the reacted product is alternately washed and filtered with absolute ethanol and deionized water for 3 times, and the washed product is dried for 6h to ...

specific Embodiment approach 2

[0032] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 4, deposition is carried out under the conditions of radio frequency power of 50W to 200W, pressure of 200Pa to 400Pa and temperature of 200°C to 400°C. for 5min. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 2, the hydrothermal reaction is carried out at a temperature of 140° C. for 24 hours. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a carbon particle / manganese dioxide composite electrode material, and the invention relates to a preparation method of a composite electrode material. The invention aims to solve the problems of high internal resistance and poor charge-discharge cycle stability existing in the existing manganese dioxide electrode material. The method of the present invention: mix manganese sulfate, potassium permanganate and distilled water evenly, place the substrate in the mixed solution, perform hydrothermal reaction to obtain the manganese dioxide nanosheet material, and place the manganese dioxide nanosheet material in the plasma The enhanced chemical vapor deposition vacuum device is used for deposition to obtain the carbon particle / manganese dioxide composite electrode material. The invention is used for a preparation method of a carbon particle / manganese dioxide composite electrode material.

Description

technical field [0001] The invention relates to a preparation method of a composite electrode material. Background technique [0002] With the rapid development of economy and society, environmental pollution, climate change and energy crisis have become important issues in China and the world today. It is imminent to develop clean and renewable new energy conversion and storage devices. Supercapacitor is a new type of energy storage element between traditional capacitors and batteries. It has higher specific capacitance and energy density than traditional capacitors, and higher power density than batteries, so it has broad application prospects. The preparation of high energy density and power density, long cycle life, and low-cost supercapacitor electrode materials has become the key to its widespread use. [0003] According to different energy storage mechanisms, electrochemical capacitors are currently divided into electric double layer capacitors and pseudocapacitors....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32H01G11/46H01G11/86
CPCY02E60/13
Inventor 亓钧雷贾赫男郭佳乐林景煌费维栋冯吉才
Owner HARBIN INST OF TECH
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