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Method for preparing activated carbon material for supercapacitor electrode from calyx seu fructus physalis persistent calyxes

A supercapacitor and activated carbon technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of low energy density and high production cost of supercapacitors, and achieve the effects of large-scale industrial production, reduction of equipment and production costs, and high quality and specific capacity

Inactive Publication Date: 2016-04-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention solves the problems of high production cost of activated carbon materials for electrodes of existing supercapacitors and low energy density of existing supercapacitors

Method used

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  • Method for preparing activated carbon material for supercapacitor electrode from calyx seu fructus physalis persistent calyxes
  • Method for preparing activated carbon material for supercapacitor electrode from calyx seu fructus physalis persistent calyxes
  • Method for preparing activated carbon material for supercapacitor electrode from calyx seu fructus physalis persistent calyxes

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specific Embodiment approach 1

[0026] Specific embodiment one: the present embodiment prepares the method for supercapacitor active carbon material with girl's fruit persistent calyx and carries out according to the following steps:

[0027] Step 1: Wash and dry the persistent calyx of girl fruit;

[0028] Step 2: removing the stem at the junction of the persistent calyx of girl fruit and mushroom fruit;

[0029] Step 3: Soak the calyx calyxes treated in step 2 in an aqueous solution of an activator for not less than 6 hours; the activator is an alkaline activator, an acidic activator or a neutral activator;

[0030] Step 4: Drain the persistent calyx of girl fruit soaked in step 3;

[0031] Step 5: place the drained girl's fruit persistent calyx obtained in step 4 in a tube furnace for carbonization and activation. The process of carbonization and activation is as follows: in an inert gas protective atmosphere or under vacuum conditions, with Raise the temperature to 600-900°C at a heating rate of 1°C / mi...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the drying temperature is 60° C. to 100° C., and the drying time is 3 hours to 24 hours. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the concentration of the activator aqueous solution in Step 3 is 0.01 mol / L-20 mol / L. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a method for preparing an activated carbon material for a supercapacitor electrode from calyx seu fructus physalis persistent calyxes, and relates to a method for preparing the activated carbon material for the supercapacitor electrode. The method aims at solving the problems that an existing activated carbon material for the supercapacitor electrode is high in production cost and an existing supercapacitor is low in energy density. The method includes the steps that firstly, the calyx seu fructus physalis persistent calyxes are cleaned and dried; secondly, stems of joints of the calyx seu fructus physalis persistent calyxes and calyx seu fructus physalis are removed; thirdly, the dried calyx seu fructus physalis persistent calyxes are placed in an activating agent aqueous solution and soaked; fourthly, the calyx seu fructus physalis persistent calyxes are drained; fifthly, the drained calyx seu fructus physalis persistent calyxes are carbonized and activated to obtain a primary activated product; sixthly, the primary activated product is subjected to acid pickling, washing and drying. The prepared activated carbon material can be used for preparing the supercapacitor high in cycling stability, large in mass specific capacity and high in energy density, and is simple in process and low in raw material cost. The method is used for preparing the activated carbon material for the supercapacitor electrode.

Description

technical field [0001] The invention relates to a preparation method of an activated carbon material for a supercapacitor electrode. Background technique [0002] Supercapacitor is a new type of fast energy storage device between ordinary capacitors and chemical batteries, and is widely regarded as a practical low-carbon energy storage device. The charging and discharging speed of supercapacitors is extremely fast, and its power density is two orders of magnitude higher than that of ordinary chemical batteries, and its energy density is hundreds of times that of traditional capacitors. The disadvantage of small capacitor energy density. Moreover, with the increasing demand for energy and the increasingly prominent environmental problems, looking for low-carbon and environmentally friendly alternative energy sources and developing clean and efficient energy storage devices have attracted widespread attention from all over the world. Under the demand of coping with the energ...

Claims

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Application Information

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IPC IPC(8): C01B31/12H01G11/34
CPCY02E60/13H01G11/34C01P2002/72C01P2002/82C01P2004/03C01P2006/40
Inventor 孙晔于登峰于淼陈崇杜宝盛唐巍杨彬曹文武
Owner HARBIN INST OF TECH
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