Method for preparing super capacitor carbon electrode material by using pistachio nut shell as raw materials

A technology of supercapacitors and pistachio shells, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of no discovery, achieve large micropore specific surface area, good application prospects, and reduce costs
CN103971948AInactive Publication Date: 2014-08-06SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANDONG UNIV OF TECH
Publication Date
2014-08-06
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a method for preparing a super capacitor carbon electrode material by using pistachio nut shells as raw materials. The method comprises the steps that after the dried pistachio nut shells are smashed, low-dose NaOH or KOH serves as an activating agent, temperature is made to rise to 600-700 DEG C under the protection of N2, then the pistachio nut shells are washed to be neutral sequentially through diluted hydrochloric acid and water, and finally the pistachio-nut-shell-based carbon electrode material is obtained after drying is conducted. In the method, the raw materials of the pistachio nut shells can be regenerated, the raw materials are rich in source, the cost is low, the activating technology is simple, therefore, the high additional value of the pistachio nut shells is utilized and the cost of the super capacitor carbon electrode material is effectively lowered. The prepared carbon electrode material has excellent super capacitor properties, the specific capacitance value of the prepared carbon electrode material in a KOH electrolyte can reach as high as 300 F / g and the specific capacitance value of the prepared carbon electrode material in an organic electrolyte can reach 125 F / g.
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Description

technical field

[0001] The invention relates to a method for preparing a supercapacitor carbon electrode material, in particular to a method for preparing a supercapacitor carbon electrode material by using pistachio nut shells as a raw material. Background technique

[0002] Supercapacitor is a new type of energy storage device between traditional electrostatic capacitors and secondary batteries. It has the characteristics of fast charging and discharging, long cycle life, high power density and wide operating temperature range. It can be widely used in national defense, railway , electric vehicles, electronics, communications, aerospace and other fields. Electrode materials are the most important components of supercapacitors. Carbon electrode materials have the advantages of stable physical and chemical properties, good electrical conductivity, and long cycle life. They are the most researched and promising electrode materials in this field. Pore ​​size and distribution...

Claims

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