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Preparation method of enteromorpha prolifera active carbon composite manganese dioxide supercapacitor electrode material

A supercapacitor, manganese dioxide technology, used in hybrid capacitor electrodes, nanotechnology for materials and surface science, nanotechnology, etc. The effect of high product quality and simple preparation process

Inactive Publication Date: 2018-08-14
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional carbon materials only have micro-, meso-, and macro-porous structures, which hinders their direct application in energy storage applications

Method used

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  • Preparation method of enteromorpha prolifera active carbon composite manganese dioxide supercapacitor electrode material
  • Preparation method of enteromorpha prolifera active carbon composite manganese dioxide supercapacitor electrode material
  • Preparation method of enteromorpha prolifera active carbon composite manganese dioxide supercapacitor electrode material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) the salvaged Enteromorpha is dried and cleaned;

[0025] (2) The Enteromorpha processed in step 1 is roasted at a high temperature at 700° C. under a nitrogen atmosphere in a tube furnace, and carbonized to obtain carbonized Enteromorpha;

[0026] (3) The carbonized Enteromorpha enteromorpha and potassium hydroxide in step 2 are uniformly mixed in a mass ratio of 1:4, and roasted at a high temperature of 800° C. in nitrogen in a tube furnace for activation. The product is fully washed, suction filtered, dried, and collected to obtain Enteromorpha activated carbon;

[0027] (4) Get step 3 and get the obtained Enteromorpha activated carbon 0.024g ultrasonic dispersion and carry out chemical damp-heat reaction at 80 ℃ in oil bath with potassium permanganate of 0.316g and 0.25 ml of concentrated sulfuric acid, and the reaction time is 1h;

[0028] (5) Suction filter the mixed solution after the reaction, wash the sediment several times, dry and collect to obtain the en...

Embodiment 2

[0031] (1) the salvaged Enteromorpha is dried and cleaned;

[0032] (2) The Enteromorpha processed in step 1 is roasted at a high temperature at 700° C. under a nitrogen atmosphere in a tube furnace, and carbonized to obtain carbonized Enteromorpha;

[0033] (3) The carbonized Enteromorpha enteromorpha and potassium hydroxide in step 2 are uniformly mixed in a mass ratio of 1:4, and roasted at a high temperature of 800° C. in nitrogen in a tube furnace for activation. The product is fully washed, suction filtered, dried, and collected to obtain Enteromorpha activated carbon;

[0034] (4) Get step 3 and get the obtained Enteromorpha activated carbon 0.024g ultrasonic dispersion to carry out chemical damp-heat reaction at 80 ℃ in oil bath with potassium permanganate of 0.316g and 0.25 ml of concentrated sulfuric acid, and the reaction time is 3h;

[0035] (5) Suction filter the mixed solution after the reaction, wash the sediment several times, dry and collect to obtain the ent...

Embodiment 3

[0038] (1) the salvaged Enteromorpha is dried and cleaned;

[0039] (2) The Enteromorpha processed in step 1 is roasted at a high temperature at 700° C. under a nitrogen atmosphere in a tube furnace, and carbonized to obtain carbonized Enteromorpha;

[0040] (3) The carbonized Enteromorpha enteromorpha and potassium hydroxide in step 2 are uniformly mixed in a mass ratio of 1:4, and roasted at a high temperature of 800° C. in nitrogen in a tube furnace for activation. The product is fully washed, suction filtered, dried, and collected to obtain Enteromorpha activated carbon;

[0041] (4) Get step 3 and get the obtained Enteromorpha activated carbon 0.024g ultrasonic dispersion to carry out chemical damp-heat reaction with 0.316g of potassium permanganate and 0.25 ml of concentrated sulfuric acid in an oil bath at 80°C, and the reaction time is 6h;

[0042] (5) Suction filter the mixed solution after the reaction, wash the sediment several times, dry and collect to obtain the ...

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Abstract

The invention discloses a preparation method of an enteromorpha prolifera active carbon composite manganese dioxide supercapacitor electrode material, and belongs to the field of a supercapacitor. Thecomposite material adopts enteromorpha prolifera, potassium permanganate and the like as the raw materials, and a supercapacitor electrode material is prepared successfully. According to the preparation method, the adopted enteromorpha prolifera, used as a biomass material, is rich in resource and is a green and environment-friendly new material; in addition, the preparation method is simple, andthe obtained composite material, by virtue of a synergistic effect of a carbon substrate material with a special multi-stage-hole structure and manganese dioxide, has relatively high specific capacity, cycle stability and energy density, and can be widely applied to the fields of electronic products, an electric bicycle, an electric vehicle, and the like.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a preparation method of enteromorpha activated carbon composite manganese dioxide supercapacitor electrode material. Background technique [0002] Manganese dioxide supercapacitor material is considered to be an ideal choice for supercapacitor materials due to its high reversible capacity, high safety, and no pollution to the environment. The traditional synthesis methods of manganese dioxide supercapacitor materials include co-precipitation method, high-temperature solid-phase method, carbothermal reduction method, hydrothermal and solvothermal methods, etc. However, the poor conductivity of manganese dioxide supercapacitor materials leads to poor rate performance and low specific capacity, which restricts its wide application in large electric equipment. In addition, the hierarchical porous structure of carbon materials (including macropores, mesopores, and micropore...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/44H01G11/46B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00H01G11/44H01G11/46
Inventor 杨东江邹译慧王希孙媛媛
Owner QINGDAO UNIV
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