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Preparation method for bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode material and application thereof

A technology of bacterial cellulose and graphene paper, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, multiple hybrid/electric double layer capacitors, etc., can solve the problem of low specific capacitance, rate performance and Poor mechanical properties, etc., to achieve the effect of low price, excellent mesh structure and good capacitance

Active Publication Date: 2016-03-23
HARBIN INST OF TECH
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  • Claims
  • Application Information

AI Technical Summary

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 the conductive film material prepared by the existing method, and provides a preparation method and application of bacterial cellulose graphene paper-loaded nickel hydroxide flexible electrode material

Method used

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  • Preparation method for bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode material and application thereof
  • Preparation method for bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode material and application thereof
  • Preparation method for bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode material and application thereof

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specific Embodiment approach 1

[0020] Embodiment 1: In this embodiment, a method for preparing a bacterial cellulose graphene paper-loaded nickel hydroxide flexible electrode material is carried out according to the following steps:

[0021] 1. Soak bacterial cellulose in deionized water for ultrasonic washing, disperse in deionized water, and then transfer to a homogenizer for high-speed stirring to obtain bacterial cellulose slurry; ultrasonically disperse acidified graphene in deionized water to obtain acidified Graphene dispersion;

[0022] 2. Vacuum filter the bacterial cellulose slurry to form a film, then add the acidified graphene dispersion to continue suction filtration to form a film, and then place it in a vacuum drying box for drying to make bacterial cellulose graphene paper;

[0023] 3. Dissolve nickel 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 it to a reactor,...

specific Embodiment approach 2

[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the power of the ultrasonic wave is 1000w, and the frequency is 30KHz. Others are the same as the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the condition of the ultrasonic washing in step 1 is an 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 for a bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode and an application thereof, and relates to a preparation method for a flexible electrode material and an application thereof, aiming to solve the problem that a conducing film material prepared by an existing method has low specific capacitance and poor rate capability and mechanical property. The preparation method comprises the steps of preparing a bacterial cellulose sizing agent; and preparing bacterial cellulose graphene paper, preparing a reaction solution containing nickel salt, and soaking the bacterial cellulose graphene paper in the reaction solution containing the nickel salt to prepare the bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode. The bacterial cellulose graphene paper loaded nickel hydroxide flexible electrode is applied to a supercapacitor. The electrode active material has high specific capacitance, high multiplying power, and good flexible electrode mechanical property, and the supercapacitor prepared by the electrode active material has good capacitive performance. The preparation method belongs to the technical field of nano materials.

Description

technical field [0001] The invention relates to a preparation method and application of a bacterial cellulose graphene paper-supported nickel hydroxide flexible electrode material. Background technique [0002] Graphene, due to its unique two-dimensional layered structure, endows it with a high theoretical specific surface area and ultrafast electron mobility, making it an electrode material for supercapacitors. Supercapacitors have relatively high power density and energy density, which make up for the low energy density of traditional capacitors and low battery power density, and are a new type of energy storage device. The performance of supercapacitors mainly depends on their electrode materials. With the increasingly urgent demand for flexibility of high-performance supercapacitors, flexible electronic devices with bending stability have become an important research direction in the field of energy storage. In the preparation process of early metal oxide or hydroxide ...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/38H01G11/12
CPCY02E60/13H01G11/86H01G11/12H01G11/30H01G11/38
Inventor 黄玉东马丽娜刘荣刘丽王芳赵峰孙少凡
Owner HARBIN INST OF TECH
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