Method for preparing nanometer porous carbon with xanthoceras sorbifolia bunge seed coats and nanometer porous carbon

A technology of nanoporous carbon and Wenguanguo is applied in the fields of material science and electrochemistry to achieve the effects of easy industrial operation, simple process and large surface area.

Inactive Publication Date: 2018-12-11
SHAANXI UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the promotion of this tree species is strongly supported by the Chinese government at present, and its sowing area is expected to reach 500,000 hectares by 2020 (Zhou XZ, Lu XF, Zhang ZF, et al. Xanthoceras sorbifolia husks-derived porous carbon forsodium-ion and lithium- sulfur batteries.Diamond&Related Materials 2018;85:104-111), during the seed separation process, the seed coat accounts for 50% of the seed biomass, and existing research reports use it to treat dye wastewater (Yao, Z., Wang, L. and Qi, J.Biosorption of Methylene Blue from AqueousSolution Using a Bioenergy Forest Waste: Xanthoceras sorbifolia SeedCoat.Clean 2009; 37:642-648), Shaanxi University of Traditional Chinese Medicine extracted xylose from Xanthoceras sorbifolia seed coat in the early stage (Yan Yiping, Song Zhongxing, Zhang Yanlei. Preliminary study on xylose preparation technology and biological activity of X. xylostella xylostella seed coat [J]. Chinese Modern Traditional Chinese Medicine, 2017, 19(1), 37-41). In addition, there has been no Research reports on the development of the seed coat of X. sorbifolium

Method used

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  • Method for preparing nanometer porous carbon with xanthoceras sorbifolia bunge seed coats and nanometer porous carbon
  • Method for preparing nanometer porous carbon with xanthoceras sorbifolia bunge seed coats and nanometer porous carbon
  • Method for preparing nanometer porous carbon with xanthoceras sorbifolia bunge seed coats and nanometer porous carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0047] 1) Pretreatment and drying: remove the kernels of X. sorbifolium seeds, and fully dry the seed coats;

[0048] 2) Dry distillation: Pour the seed coats obtained in step 1) into the dry distillation still, fill it tightly, seal and strengthen the dry distillation still, then gradually increase the temperature at 10°C / min to 200°C for dry distillation, condense and recover the flue gas, and obtain the pyrolysis solution;

[0049] 3) Smoldering and carbonization: After step 2) the seed coat of Xanthos sorbifolium no longer produces smoke, stop the carbonization, but continue to keep the airtight state, so that the material can continue to smolder and carbonize with its own waste heat to obtain biochar of XSSC (XSSC) ;

[0050] 4) Activator pre-mixing: take step 2) Chinese crown fruit seed coat biochar (XSSC), and fully grind and mix with 3 times the amount of activator;

[0051] 5) High temperature activation: take the mixture of testa biochar and activator in step 4), pl...

Embodiment 2

[0059] 1) Pretreatment and drying: remove the kernels of X. sorbifolium seeds, and fully dry the seed coats;

[0060] 2) Dry distillation: Pour the seed coats obtained in step 1) into a dry distillation still, fill it tightly, seal and reinforce the dry distillation still, then gradually increase the temperature at 10°C / min to 300°C for dry distillation, condense and recover the flue gas, and obtain a pyrolysis solution;

[0061] 3) Smoldering and carbonization: After step 2) the seed coat of Xanthos sorbifolium no longer produces smoke, stop the carbonization, but continue to keep the airtight state, so that the material can continue to smolder and carbonize with its own waste heat to obtain biochar of XSSC (XSSC) ;

[0062] 4) Activator pre-mixing: take step 2) Chinese crown fruit seed coat biochar (XSSC), and fully grind and mix with 3 times the amount of activator;

[0063] 5) High temperature activation: take the mixture of testa biochar and activator in step 4), place i...

Embodiment 3

[0071] 1) Pretreatment and drying: remove the kernels of X. sorbifolium seeds, and fully dry the seed coats;

[0072] 2) Dry distillation: Pour the seed coats obtained in step 1) into the dry distillation still, fill it tightly, seal and strengthen the dry distillation still, then gradually increase the temperature at 10°C / min to 200°C for dry distillation, condense and recover the flue gas, and obtain the pyrolysis solution;

[0073] 3) Smoldering and carbonization: After step 2) the seed coat of Xanthos sorbifolium no longer produces smoke, stop the carbonization, but continue to keep the airtight state, so that the material can continue to smolder and carbonize with its own waste heat to obtain biochar of XSSC (XSSC) ;

[0074] 4) Activator pre-mixing: take step 2) Chinese crown fruit seed coat biochar (XSSC), and fully grind and mix with 3 times the amount of activator;

[0075] 5) High temperature activation: take the mixture of testa biochar and activator in step 4), pl...

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Abstract

The invention relates to a method for preparing nanometer porous carbon with xanthoceras sorbifolia bunge seed coats, nanometer porous carbon, a super-capacitor electrode slice and a preparation method of the super-capacitor electrode slice. Through regulation and control of the activation temperature and the dosage of an activator; for xanthoceras sorbifolia bunge seed coat porous carbon, the specific surface area is 2148m2/g, a porous structure is formed by a great amount of micropores which are regularly and closely arranged, and the pore diameter distribution is 2nm or below. For an electrode prepared with the porous carbon, the specific capacitance at the current density of 0.5A/g reaches up to 429F/g, the electrode still has very good specific capacitance (128F/g) when the current density rises to 20A/g, and the capacitance retention still reaches up to 98.7 percent after the electrode is charged or discharged for 1000 times under the condition with the current density being 10A/g. The porous carbon prepared with the xanthoceras sorbifolia bunge seed coats as a raw material has good electrochemical performance, can be used as an electrode material for a super-capacitor and provides a new thought and way of comprehensive development and utilization of xanthoceras sorbifolia bunge resources.

Description

technical field [0001] The invention belongs to the field of material science and electrochemistry, and relates to a method for preparing nanoporous carbon and nanoporous carbon, in particular to a method for preparing nanoporous carbon from the seed coat of X. sorbifolium, nanoporous carbon, super capacitor electrode sheets and super A method for preparing a capacitive electrode sheet. Background technique [0002] Xanthoceras sorbifolia Bunge is a plant of the genus Xanthoceras sorbifolia in the family Sapindaceae. It is a single genus and a single species. It is a rare woody oil plant unique to my country. Agricultural and forestry crops developed and supported. The whole body of X. sorbifolium has high development value. For example, the perianth of X. sorbifolium has the function of improving prostatitis; , The effect of reducing swelling and relieving pain. The seeds and shells that have been reported the most and have the most development value so far are its seeds ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/342C01B32/348B82Y40/00H01G11/44H01G11/34H01G11/86
CPCB82Y40/00C01B32/324C01B32/342C01B32/348H01G11/34H01G11/44H01G11/86Y02E60/13
Inventor 张严磊唐志书孙琛宋忠兴王征黄文静
Owner SHAANXI UNIV OF CHINESE MEDICINE
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