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Preparation method and application of self-supporting hierarchical porous carbon materials based on star-like block copolymers

A block copolymer, self-supporting technology, applied in the preparation/purification of carbon, the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. Micellar instability, unfavorable electrospinning operation, etc., to achieve the effect of good application prospects, narrow dispersion, and narrow versatility

Active Publication Date: 2021-12-07
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing linear block copolymer micelles are unstable in the solution, which is not conducive to the electrospinning operation. Therefore, the carbon material after high-temperature carbonization does not have a uniform multi-level pore structure, which cannot meet the requirements of flexible solid-state supercapacitors.

Method used

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  • Preparation method and application of self-supporting hierarchical porous carbon materials based on star-like block copolymers
  • Preparation method and application of self-supporting hierarchical porous carbon materials based on star-like block copolymers
  • Preparation method and application of self-supporting hierarchical porous carbon materials based on star-like block copolymers

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Embodiment 1

[0048] A preparation method and application of a self-supporting hierarchical porous carbon material based on a star-shaped block copolymer, such as figure 1 As shown, the specific steps are as follows:

[0049] Under nitrogen protection, BoltonH40 (1.325g, 0.3mmol) was put into a vacuum oven at 80°C for drying overnight before the reaction, and added to a Schlenk bottle equipped with a magnetic stirrer with 60mL of N-methylpyrrolidone. Keep the solvent at 0°C under ice-bath conditions, slowly add 2-bromoisobutyryl bromide (2.214g, 19.2mmol), and maintain at 0°C for 2 hours, then rise to room temperature, react for 22 hours, and get light yellow after reaction The liquid is extracted with dichloromethane and saturated sodium carbonate solution, and the liquid in the lower part of the extraction bottle obtained is packed into an eggplant-shaped bottle and rotated under the rotary evaporation system of a circulating water vacuum pump to obtain a yellow viscous liquid. A white s...

Embodiment 2

[0060] A preparation method and application of a self-supporting hierarchical porous carbon material based on a star-shaped block copolymer, such as figure 1 As shown, the specific steps are as follows:

[0061]Under the protection of nitrogen, put BoltonH40 (1.325g, 0.3mmol) into a vacuum oven at 80°C for drying overnight before the reaction, and add 60mL of N-methylpyrrolidone into a Schlenk bottle equipped with a magnetic stirrer, Keep the solvent at 0°C under ice-bath conditions, slowly add 2-bromoisobutyryl bromide (2.214g, 19.2mmol), and maintain at 0°C for 2 hours, then rise to room temperature, react for 22 hours, and get light yellow after reaction The liquid is extracted with dichloromethane and saturated sodium carbonate solution, and the liquid in the lower part of the obtained extraction bottle is packed into an eggplant-shaped bottle and rotated under the rotary evaporation system of a circulating water vacuum pump to obtain a yellow viscous liquid. A white soli...

Embodiment 3

[0068] A preparation method and application of a self-supporting hierarchical porous carbon material based on a star-shaped block copolymer, such as figure 1 As shown, the specific steps are as follows:

[0069] Under the protection of nitrogen, put BoltonH40 (1.325g, 0.3mmol) into a vacuum oven at 80°C for drying overnight before the reaction, and add 60mL of N-methylpyrrolidone into a Schlenk bottle equipped with a magnetic stirrer, Keep the solvent at 0°C under ice-bath conditions, slowly add 2-bromoisobutyryl bromide (2.214g, 19.2mmol), and maintain at 0°C for 2 hours, then rise to room temperature, react for 22 hours, and get light yellow after reaction The liquid is extracted with dichloromethane and saturated sodium carbonate solution, and the liquid in the lower part of the extraction bottle obtained is packed into an eggplant-shaped bottle and rotated under the rotary evaporation system of a circulating water vacuum pump to obtain a yellow viscous liquid. A white sol...

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Abstract

The invention relates to the preparation method and application of a self-supporting hierarchical porous carbon material based on a star-shaped block copolymer. The star-shaped carbon material is prepared by a two-step reversible addition-fragmentation chain transfer polymerization method using hyperbranched polyester H40 as a macromolecular initiator. Polyester‑star‑(Polytert-butyl acrylate‑b‑polyacrylonitrile) block copolymer (H40‑star‑(PtBA‑b‑PAN)) was obtained by electrospinning to obtain a self-supporting polymer film, which was heated Self-supporting porous carbon membranes were prepared by cross-linking and high-temperature calcination, and their morphology and structure were analyzed. As a flexible electrode material, the carbonized porous carbon film has a good application prospect in the field of flexible solid-state supercapacitors.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method and application of a self-supporting hierarchical porous carbon material based on a star-shaped block copolymer. Background technique [0002] The search for clean and renewable electrochemical energy storage has attracted great attention in both academic and industrial fields during the past decades. Supercapacitors are promising energy storage devices due to their many advantages such as fast charge / discharge rates, high power density, and long cycle life. With the development of wearable electronic devices, flexible porous carbon materials have become the most important components for electrochemical electrode materials. [0003] To date, various techniques including interfacial synthesis, self-assembly methods, chemical vapor deposition methods, inkjet printing, and electrospinning techniques have been introduced to construct self-supporting electrode me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/32H01G11/86C01B32/05C08F293/00
CPCC08F293/005C08F2438/03C01B32/05H01G11/26H01G11/32H01G11/86Y02E60/13
Inventor 邱丰刘凤茹宣晓东康佳玲韩生
Owner SHANGHAI INST OF TECH
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