Phosphorus-containing mesoporous carbon material, method for preparing same and application of phosphorus-containing mesoporous carbon material

A technology of mesoporous carbon and pore size, which is applied in the field of phosphorus-containing mesoporous carbon materials and its preparation, can solve the problems of cumbersome synthesis process, expensive synthesis cost, and difficulty in popularization, and achieve convenient operation, simple process, and good mesoporous structure and application performance effects

Inactive Publication Date: 2018-10-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is that the synthesis process is cumbersome, the cycle is long, the synthesis cost is expensive, and it is difficult to promote

Method used

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  • Phosphorus-containing mesoporous carbon material, method for preparing same and application of phosphorus-containing mesoporous carbon material
  • Phosphorus-containing mesoporous carbon material, method for preparing same and application of phosphorus-containing mesoporous carbon material
  • Phosphorus-containing mesoporous carbon material, method for preparing same and application of phosphorus-containing mesoporous carbon material

Examples

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Embodiment 1

[0043] Preparation of soluble resin precursor: Add 9.2 g of phenol into a single-necked flask and place it in a 43°C water bath to melt, then add 1.95 g of 20% NaOH aqueous solution by mass percentage, stir for 10 minutes, and then add 16.3 g of formaldehyde solution (37wt% ), reflux at 71 °C for 1 h, and cool to room temperature. Adjust the pH to about 7 with 2 M hydrochloric acid solution, place the flask in a 50°C water bath to distill off water under reduced pressure, add 5.0 g of absolute ethanol, and centrifuge to remove NaCl crystals. The flask was placed in a 48 °C water bath to distill off ethanol under reduced pressure, and after cooling to room temperature, it was configured into a 20 wt% ethanol solution.

Embodiment 2

[0045] Phosphorus-containing mesoporous carbon materials were prepared using triethylphosphate as a phosphorus precursor: 5.0 g of nonionic surfactant polyethylene oxide–polypropylene oxide–polyethylene oxide triblock copolymer (F127) was dissolved in Obtain clear solution in 50.0 g absolute ethanol, then add the phenolic resin ethanol solution of 20 wt% prepared in 25.0 g embodiment 1 and 1.2 g triethyl phosphate, stir and mix for 30 minutes; Then spread this mixed solution evenly on culture In a dish, stand at room temperature for 8 hours and then transfer to a 100°C oven for low-temperature curing for 24 hours; the obtained phosphorus-containing resin-nonionic surface active composite material is carbonized at a high temperature of 800°C for 3 hours under the protection of a nitrogen atmosphere to obtain a phosphorus-containing mesoporous carbon material . The heating rate during high temperature carbonization is 5°C / min. The phosphorus content of the obtained phosphorus-c...

Embodiment 3

[0047] Phosphorus-containing mesoporous carbon materials were prepared using triethylphosphate as a phosphorus precursor: 5.0 g of nonionic surfactant polyethylene oxide–polypropylene oxide–polyethylene oxide triblock copolymer (F127) was dissolved in Obtain clarified solution in 50.0 g dehydrated alcohol, then add the phenolic resin ethanol solution of 20 wt% prepared in 25.0 g embodiment 1 and 7.8 g triethyl phosphate, stir and mix for 30 minutes; Then spread this mixed solution evenly on culture In a dish, stand at room temperature for 8 hours and then transfer to a 100°C oven for low-temperature curing for 24 hours; the obtained phosphorus-containing resin-nonionic surface active composite material is carbonized at a high temperature of 800°C for 3 hours under the protection of a nitrogen atmosphere to obtain a phosphorus-containing mesoporous carbon material . The heating rate during high temperature carbonization is 5°C / min. The obtained phosphorus-containing mesoporous...

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Abstract

The invention belongs to the technical field of material preparation, and particularly relates to a phosphorus-containing mesoporous carbon material, a method for preparing the same and application ofthe phosphorus-containing mesoporous carbon material. The method includes dissolving nonionic surfactants in organic solvents to obtain solution; adding soluble resin and phosphorus-containing precursors into the solution; inducing multi-element organic assembling by the aid of solvent evaporation to obtain phosphorus-containing resin-surfactant composite materials; carbonizing the phosphorus-containing resin-surfactant composite materials at the high temperatures to obtain the phosphorus-containing mesoporous carbon material. The phosphorus content of the phosphorus-containing mesoporous carbon material prepared by the aid of the method is 0.3-7.0 wt%, the pore diameters of the phosphorus-containing mesoporous carbon material are 3.0-15 nm, the pore volumes of the phosphorus-containing mesoporous carbon material are 0.2-0.6 cm<3> / g, and the specific surface areas of the phosphorus-containing mesoporous carbon material is 290-890 m<2> / g. The phosphorus-containing mesoporous carbon material and the method have the advantages that the novel phosphorus-containing mesoporous carbon material is excellent in performance in the aspect of electrode materials for lithium-ion batteries, andthe capacity can keep at 500 mAh / g after 200 cycles under the condition of the current density of 0.5 C; the phosphorus-containing mesoporous carbon material and the method hopefully can be extensively applied to the aspects of sodium-ion batteries, electro-catalysis and the like.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a phosphorus-containing mesoporous carbon material, a preparation method thereof, and an application in the field of lithium ion batteries. Background technique [0002] Mesoporous carbon materials are a new class of nanoporous materials, which not only have the properties of mesoporous materials such as high specific surface area, large pore volume, and adjustable pore size from 2 to 50 nm, but also have excellent properties of carbon, such as good Excellent electrical conductivity, thermal stability, mechanical stability, inertness to chemical reactions, etc. These properties make this type of material have broad application prospects in the fields of catalysis, adsorption and separation, electrochemistry, and energy storage. [0003] The modification of mesoporous carbon by grafting of surface groups and / or doping of heteroatoms in the framework can in...

Claims

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Application Information

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IPC IPC(8): C01B32/05H01M4/583H01M10/0525
CPCC01B32/05H01M4/583H01M10/0525Y02E60/10
Inventor 王金秀赵东元李伟夏缘
Owner FUDAN UNIV
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