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Method for preparation of three-dimensional porous graphene carbon electrode material from livestock excrement

A livestock manure, three-dimensional porous technology, applied in battery electrodes, hybrid capacitor electrodes, circuits, etc., can solve the problems of occupying social resources, polluting the environment, unpleasant smell, etc., achieving high energy density, good conductivity, electron and ion The effect of small transfer resistance

Active Publication Date: 2015-08-19
深圳为方能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Livestock manure is a kind of biomass waste. Long-term stacking not only smells bad, pollutes the environment, but also takes up social resources.

Method used

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  • Method for preparation of three-dimensional porous graphene carbon electrode material from livestock excrement
  • Method for preparation of three-dimensional porous graphene carbon electrode material from livestock excrement
  • Method for preparation of three-dimensional porous graphene carbon electrode material from livestock excrement

Examples

Experimental program
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Effect test

Embodiment 1

[0028] In this example 1, Shanghai Chenhua CHI660E electrochemical workstation was used for the cyclic voltammetry, constant current charge and discharge, and impedance test in the electrochemical test; the instrument used to test the constant current charge and discharge to characterize the stability of the device was Wuhan blue Electric battery test system BT2013S.

[0029] This comparative example adopts the preparation method described above to prepare three-dimensional porous graphene-like carbon electrode material, but without activation treatment during preparation, the specific operation steps are as follows:

[0030] Take sheep manure that is fully dried under the sun and crush it into particles, put it into a ceramic boat, place the ceramic boat in a CVD furnace, pass it into an Ar gas protection, and raise the temperature to 800°C at a rate of 10°C / min for carbonization. The time is 2 hours; after that, when the temperature drops to room temperature, the obtained ca...

Embodiment 2

[0032] The test conditions of the present embodiment and the instrument used are the same as in Example 1.

[0033] This comparative example strictly adopts the preparation method described above to prepare the three-dimensional porous graphene-like carbon electrode material. The preparation process undergoes carbonization and activation treatment. The specific operation steps are as follows:

[0034]Take the sheep manure that is fully dried under the sun and crush it into particles, put it into a ceramic boat, place the ceramic boat in a CVD furnace, pass it into an Ar gas protection, and raise the temperature at 10°C / min to 800°C for carbonization, and carbonize for 2 hours . Afterwards, when the temperature drops to room temperature, take out the obtained carbide powder, thoroughly grind it in an agate mortar, mix it with solid NaOH according to the alkali-carbon mass ratio of 4:1, fully grind and mix evenly, and then put it into a ceramic boat. Put the ceramic boat back i...

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Abstract

Belonging to capacitor energy storage devices, the invention provides a method for preparation of a three-dimensional porous graphene carbon electrode material from livestock excrement, and application of the prepared carbon electrode material in supercapacitors and other energy storage devices. The method includes: drying the selected sheep excrement to a constant weight, maintaining the original state or conducting crushing, then under atmosphere protection, conducting carbonization and activation treatment at an appropriate temperature, and then carrying out washing and drying, thus obtaining the carbon electrode material with sheep excrement as the raw material. The preparation method provided by the invention is simple, and the raw materials are renewable, rich in sources and low in cost, the method utilizes waste, purifies the environment, and can realize mass production and application implementation. The high-performance supercapacitor electrode material maintains high specific capacitance under large charge-discharge velocity, maintains stable performance, and has relatively high energy density. The electrode material prepared by the method provided by the invention is an excellent electrode material applied to supercapacitors, lithium ion batteries and other energy storage devices.

Description

technical field [0001] The present invention relates to a preparation method and application of a carbon electrode material, in particular to a method for preparing a three-dimensional porous graphene-like carbon electrode material by using common livestock manure; and applying the carbon electrode material to energy storage such as supercapacitors and lithium-ion batteries The device belongs to the technical field of energy storage devices. Background technique [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and lithium-ion batteries. Its typical characteristics are the ability to charge and discharge large currents, high power density, and maintain excellent capacitance performance after long-term cycling; and , can be widely used in a large temperature range. However, the performance of supercapacitors greatly depends on the electrode materials used. At present, the electrode materials used in supercapacitors are roughly div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04H01G11/44H01M4/583
CPCY02E60/10Y02E60/13
Inventor 朱小红张彩云魏大程曹敏李孟林
Owner 深圳为方能源科技有限公司
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