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Method for preparing tremelliform porous carbon through waste sugar solution, and application of porous carbon in preparing electrode plate

A technology for preparing electrodes and porous carbon, which is applied in chemical instruments and methods, hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., and can solve problems such as environmental pollution and resource waste

Inactive Publication Date: 2018-12-21
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, with the increase of production waste, in order to facilitate the disposal of waste, some recyclable waste is directly discharged, which in turn causes environmental pollution and waste of resources

Method used

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  • Method for preparing tremelliform porous carbon through waste sugar solution, and application of porous carbon in preparing electrode plate
  • Method for preparing tremelliform porous carbon through waste sugar solution, and application of porous carbon in preparing electrode plate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 Mixed carbonization / activation of waste sugar liquid and lignin to prepare white fungus-like porous carbon.

[0029] Step 1, the waste sugar solution is filtered under reduced pressure to remove insoluble impurities, and then 5g of waste sugar solution and 1g of lignin are mixed (m 废糖液 / m 木质素 =5 / 1), mechanically stirred for 2 h.

[0030] The mixture obtained above is poured into a beaker, and put into a blast drying oven, at 90 o At the temperature of C, after keeping for 12 hours, the dried product was obtained and placed in a tube furnace for high-temperature carbonization treatment: 700 o High-temperature carbonization at C temperature for 2 h, and a fluffy carbonized sample was obtained.

[0031] Step 2, chemical activation to prepare tremella-like porous carbon:

[0032] (1) Mix the carbonized sample and KOH in step 1 according to the mass ratio: m KOH / m 炭材料 =1.

[0033] (2) The mixture of carbonized sample and KOH was placed in a tube furnace, an...

Embodiment 2

[0037] Example 2 is basically the same as Example 1, except that the mass ratio of the waste sugar solution and lignin described in step 1 is 5 / 2, the mechanical stirring time is 1 h, and the carbonization temperature is 500 o C, the carbonization time is 1h. The activation temperature described in step 2 is 500 o C, the activation time is 1h, m KOH / m 炭材料 =2.

Embodiment 3

[0038] Example 3 is basically the same as Example 1, except that the mass ratio of the waste sugar solution and lignin described in step 1 is 5 / 3, the mechanical stirring time is 3 h, and the carbonization temperature is 600 o C, the carbonization time is 3h. The activation temperature described in step 2 is 600 o C, the activation time is 2.5 h, m KOH / m 炭材料 =4.

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Abstract

The invention discloses a method for preparing tremelliform porous carbon through a waste sugar solution, application of the porous carbon in preparing an electrode plate, and a preparation method thereof. The waste sugar solution is adopted as a precursor, lignin and the waste sugar solution are uniformly mixed and carbonized, a carbon material rich in an oxygen-containing functional group is synthesized, and the tremelliform porous carbon with a better electrochemical performance is prepared through KOH activation. According to the method, the high-value-added utilization of the waste sugarsolution produced during a vitamin C preparation process is realized, the cost on treating the waste sugar solution by a biological pharmacy company is reduced, and the environment pollution is also reduced to a certain degree.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to the preparation of tremella-shaped porous carbon by using a waste sugar solution and the application and preparation method of the tremella-shaped porous carbon prepared by the method in preparing electrode sheets. Background technique [0002] Energy shortage is a serious problem facing the world today. In order to overcome this problem, it is very important to comprehensively utilize alternative sustainable renewable resources to realize energy conversion and storage. In recent years, research on energy storage technologies such as fuel cells, battery packs, and capacitors has attracted much attention. Electric double-layer capacitors are widely used in many fields because of their high energy density, long cycle life, and performance superior to other battery packs. Moreover, with the increase of production waste, in order to facilitate the disposal of waste, som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348H01G11/86H01G11/44H01G11/34
CPCC01P2004/03C01P2006/12C01P2006/40C01B32/324C01B32/348H01G11/34H01G11/44H01G11/86Y02E60/13
Inventor 曹景沛郝志强赵小燕吴燕任雪宇庄奇琪党亚丽崔馨魏贤勇
Owner CHINA UNIV OF MINING & TECH
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