Preparation method and application of bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material

A flexible and bacterial cellulose technology of cobalt trioxide, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of low specific capacitance, poor rate performance and mechanical properties of conductive film materials, and achieve low price, Effects of performance improvement and high-magnification performance

Active Publication Date: 2016-04-20
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of low specific capacitance and poor rate performance and mechanical properties of conductive film materials prepared by existing methods, and provides a preparation method and application of a bacterial cellulose graphene paper-loaded cobalt tetroxide flexible electrode material

Method used

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  • Preparation method and application of bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material
  • Preparation method and application of bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material
  • Preparation method and application of bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material

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specific Embodiment approach 1

[0018] Embodiment 1: In this embodiment, a method for preparing a bacterial cellulose graphene paper-loaded cobalt tetroxide flexible electrode material is carried out as follows:

[0019] 1. Soak bacterial cellulose in deionized water and ultrasonically wash it, disperse it in deionized water, and then transfer it to a homogenizer for high-speed stirring to obtain bacterial cellulose slurry; ultrasonically disperse acidified graphene in deionized water to obtain acidified Graphene dispersion;

[0020] 2. Vacuum filter the bacterial cellulose slurry to form a film, then add acidified graphene dispersion to continue to filter to form a film, and then place it in a vacuum drying oven for drying to make bacterial cellulose graphene paper;

[0021] 3. Dissolve the cobalt salt and ammonium salt in distilled water to obtain a mixed solution; soak the bacterial cellulose graphene paper in the mixed solution, add ammonia water, mix evenly, transfer to the reaction kettle, and heat to ...

specific Embodiment approach 2

[0028] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the power of the ultrasound is 1000w, and the frequency is 30KHz. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that: the condition of the ultrasonic washing described in step 1 is the ultrasonic time of 1-10 hours. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method and application of a flexible electrode material, in particular, a preparation method and application of a bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material. The objective of the invention is to solve the problems of low specific capacitance, low rate capability and poor mechanical properties of a conductive film material prepared by adopting an existing preparation method. The method of the invention includes the following steps that: bacterial cellulose slurry is prepared; bacterial cellulose graphene paper is prepared, and a cobalt salt-containing reaction solution is prepared, and the bacterial cellulose graphene paper is soaked in the cobalt salt-containing reaction solution, and as a result, a bacterial cellulose graphene paper load cobaltosic oxide flexible electrode can be obtained, and the bacterial cellulose graphene paper load cobaltosic oxide flexible electrode can be applied to a super capacitor. The active material prepared by adopting the method of the invention has high specific capacitance; the flexible electrode has excellent mechanical properties; and the super capacitor can have excellent capacitance performance. The preparation method and application of the bacterial cellulose graphene paper load cobaltosic oxide flexible electrode material of the invention belong to the nanometer material technical field.

Description

technical field [0001] The invention relates to a preparation method and application of bacterial cellulose graphene paper-loaded cobalt tetroxide flexible electrode material. Background technique [0002] Due to its unique two-dimensional layered structure, graphene endows it with a high theoretical specific surface area and ultrafast electron mobility, making it suitable as an electrode material for supercapacitors. Supercapacitors have relatively high power density and energy density, making up for the shortcomings of traditional capacitors with low energy density and battery power density, and are a new type of energy storage device that has emerged with the development of material science. Due to the advantages of wide temperature applicability, long cycle life and low maintenance cost, supercapacitors have shown broad application prospects in power compensation, electric vehicle power supply and microelectronic devices. The performance of supercapacitors mainly depend...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/36H01G11/46
CPCY02E60/13H01G11/86H01G11/30H01G11/36H01G11/46
Inventor 袁国辉刘荣马丽娜杨少强张芳平张法宁黎恩源
Owner HARBIN INST OF TECH
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