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A multifunctional energy storage device integrating energy storage and structure and its preparation method

An energy storage device and multi-functional technology, which can be applied in the manufacture of hybrid/electric double layer capacitors, separators of hybrid capacitors, electrodes of hybrid capacitors, etc. problems, to achieve the effect of increasing tensile strength and surface activity, increasing effective specific surface area and surface activity, and increasing specific surface area

Active Publication Date: 2016-08-31
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Carbon fiber-reinforced epoxy resin (CF / EP)-based composites have become a research hotspot for multifunctional structural power materials due to their excellent mechanical properties and inherent physical and chemical properties of carbon materials; Tony Carlson (Composites Science and Technology, 70 (2010 ) 1135–1140) used carbon fiber / epoxy resin prepreg as electrode material, and polymer film as diaphragm to prepare multifunctional structural capacitors. The capacitors prepared had certain mechanical load-bearing functions; Use the electrode material and electrolyte interface to form an electric double layer to store charges. The specific surface area and surface properties of the carbon material are important factors affecting the electrochemical performance of the capacitor; since the electrode material is directly made of carbon fiber / epoxy resin prepreg semi-finished products, the electrode The material preparation process and the design of the capacitor system are relatively simple, which leads to the low energy storage effect of the capacitor, and there is still a big gap from the actual application

Method used

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  • A multifunctional energy storage device integrating energy storage and structure and its preparation method
  • A multifunctional energy storage device integrating energy storage and structure and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Activation treatment of carbon fiber cloth

[0034] ① Carbon fiber cloth deglue treatment

[0035] Using acetone and ethanol as a solvent with a volume ratio of 1:2, soak polyacrylonitrile-based carbon fiber cloth for 24 hours, then wash it with deionized water, and dry it at 80°C for 12 hours.

[0036] ② Liquid phase oxidation of carbon fiber cloth

[0037] Clean the polyacrylonitrile-based carbon fiber cloth with deionized water ultrasonically for 30 minutes, and immerse it in KClO with a volume ratio of 1:1. 3 with H 2 SO 4 In the mixed solution of KClO 3 Concentration is 5%, H 2 SO 4 The concentration is 40%, carbon fiber cloth and KClO 3 with H 2 SO 4 The mass ratio of the mixed solution is 1:80, stir, heat, and treat the carbon fiber cloth at 60°C for 3h; take out the oxidized carbon fiber cloth and wash it with deionized water until neutral, put it in a blast drying oven at 80°C for 12h .

[0038] ③Gas-phase oxidation of carbon fiber cloth

[0039...

Embodiment 2

[0047] (1) Activation treatment of carbon fiber cloth

[0048] ① Carbon fiber cloth deglue treatment

[0049] Using acetone and ethanol as a solvent with a volume ratio of 1:2, soak polyacrylonitrile-based carbon fiber cloth for 24 hours, then wash it with deionized water, and dry it at 80°C for 12 hours.

[0050] ② Liquid phase oxidation of carbon fiber cloth

[0051] Clean the polyacrylonitrile-based carbon fiber cloth with deionized water ultrasonically for 30 minutes, and immerse it in KClO with a volume ratio of 1:1. 3 with H 2 SO 4 In the mixed solution of KClO 3 Concentration is 10%, H 2 SO 4 The concentration is 30%, carbon fiber cloth and KClO 3 with H 2 SO 4 The mass ratio of the mixed solution is 1:80, stir, heat, and treat the carbon fiber cloth at 80°C for 2 hours; take out the oxidized carbon fiber cloth and wash it with deionized water until it is neutral, and dry it in a blast drying oven at 80°C for 12 hours .

[0052] ③Gas-phase oxidation of carbon...

Embodiment 3

[0061] (1) Activation treatment of carbon fiber cloth

[0062] ① Carbon fiber cloth deglue treatment

[0063] Using acetone and ethanol as a solvent with a volume ratio of 1:2, soak polyacrylonitrile-based carbon fiber cloth for 24 hours, then wash it with deionized water, and dry it at 80°C for 12 hours.

[0064] ② Liquid phase oxidation of carbon fiber cloth

[0065] Clean the polyacrylonitrile-based carbon fiber cloth with deionized water ultrasonically for 30 minutes, and immerse it in KClO with a volume ratio of 1:1. 3 with H 2 SO 4 In the mixed solution of KClO 3 Concentration is 15%, H 2 SO 4 The concentration is 20%, carbon fiber cloth and KClO 3 with H 2 SO 4 The mass ratio of the mixed solution is 1:80, stir, heat, and treat the carbon fiber cloth at 100°C for 1 hour; take out the oxidized carbon fiber cloth and wash it with deionized water until it is neutral, put it in a blast drying oven and dry it at 80°C for 12 hours .

[0066] ③Gas-phase oxidation of...

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Abstract

The invention relates to the technical field of electrochemical capacitors, in particular to a multifunctional structural capacitor integrating energy storage and structure and a preparation method thereof. The present invention uses the carbon fiber cloth that has been treated with the mixed solution of KClO3 and H2SO4 and then undergoes air oxidation treatment as the electrode material, the epoxy resin-based gel polymer as the electrolyte, and the glass fiber cloth as the diaphragm to prepare an energy-storage structure. Integrated multifunctional energy storage device. The prepared energy storage device is a structural capacitor integrating energy storage and structure. The charge and discharge curves of the capacitor are basically linear, with obvious electric double layer capacitance characteristics, and the reversibility of charge and discharge is good. The electrochemical performance of the capacitor is higher than that of previous People have been greatly improved; in order to further improve the electrochemical and mechanical properties of capacitors, multiple capacitor units can be stacked in a design, and the designability is relatively strong.

Description

technical field [0001] The invention relates to the technical field of electrochemical capacitors, in particular to a multifunctional structural capacitor integrating energy storage and structure and a preparation method thereof. Background technique [0002] With the rapid development of new energy vehicles such as electric vehicles and hybrid vehicles, higher requirements are put forward for traditional energy storage devices. Power supply weight reduction has become the top priority for the promotion and application of new energy vehicle technology, which is economical, efficient, low-carbon and environmentally friendly. The demand for a green energy storage system is very urgent; especially in the aerospace field, the disadvantages of large mass and large volume of bulk batteries are particularly prominent; how to reduce the mass and volume of energy storage devices, increase their effective capacity, reduce system quality, and improve system Efficiency is a technical pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/48H01G11/52H01G11/56H01G11/84H01G11/86
Inventor 李素敏赵玉涛张钊刘方方顾岩岩
Owner JIANGSU UNIV
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