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A kind of sheet laminated all-solid-state supercapacitor and preparation method thereof

A supercapacitor, all-solid-state technology, applied in the manufacture of hybrid/electric double layer capacitors, multiple hybrid/electric double layer capacitors, etc., can solve problems such as large performance differences, difficult large-scale components, easy leakage, etc., to achieve high reliability Sexuality and lifespan, use of space expansion, and overcoming the effect of short lifespan

Active Publication Date: 2018-12-28
胡英 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid supercapacitors are the main choice of supercapacitors in the existing market due to the good ionic conductivity of liquid electrolytes, but they also have the following disadvantages: 1. Low working voltage (water agent is about 1V); 2. Easy to leak; 3. Strong corrosion; 4. Difficult to control process precision; 5. Large performance differences between individuals and difficult to make large-scale components
However, the current solid-state ionic conductivity is lower than that of liquid ions, such as Li 4 Ti 5 o 12 The conductivity is less than 10 -9 Scm -1 , making the series equivalent resistance of solid-state materials high, restricting the development of solid-state supercapacitors

Method used

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  • A kind of sheet laminated all-solid-state supercapacitor and preparation method thereof
  • A kind of sheet laminated all-solid-state supercapacitor and preparation method thereof
  • A kind of sheet laminated all-solid-state supercapacitor and preparation method thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0084] Such as image 3 Shown, a kind of laminated laminated all-solid supercapacitor comprises all-solid supercapacitor core 1 and casing 8,

[0085] The top side of the housing 8 is provided with a rectangular blind hole, and the opposite two inner walls of the rectangular blind hole are coated with conductive silver paste 9, and the upper surface of the housing 8 adjacent to the opposite two inner walls of the rectangular blind hole is also provided with a There is conductive silver paste 9,

[0086] The all-solid supercapacitor core 1 is clamped in the rectangular blind hole. The aluminum foils on both sides of the all-solid supercapacitor core 1 are in full contact with the conductive silver paste 9 on the inner side walls of the rectangular blind hole. The upper surface of the all-solid supercapacitor core 1 is also set There is an encapsulation layer,

[0087] The conductive silver paste 9 on both sides of the top side of the housing 8 is externally connected with an ...

specific Embodiment 2

[0124] Roughly the same as specific embodiment 1, the difference only lies in:

[0125] The shell 8 is a polymer shell.

[0126] The laminated all-solid-state supercapacitor core with sheet-shaped double-sided electrodes is formed by bonding a sheet-shaped double-sided electrode.

[0127] Further, the first coating 13 includes dielectric / electrolyte composite powder and PVB,

[0128] The dielectric / electrolyte composite powder is made of BaTiO with a molar ratio of 2:1 3 Powder and β″-Al 2 o 3 mixed powder,

[0129] PVB accounts for 30% of the sum of the mass of dielectric / electrolyte composite powder and PVB.

[0130] Furthermore, BaTiO 3 The particle size of the powder is 50nm, β″-Al 2 o 3 The particle size of the powder is 50nm.

[0131] Further, step (1) includes the following steps:

[0132] (11), the BaTiO 3 Powder and β″-Al 2 o 3 After the powder is mixed at a molar ratio of 2:1, grind for at least half an hour, and pass through a 200-mesh sieve to obtain a...

specific Embodiment 3

[0139] Roughly the same as specific embodiment 1, the difference only lies in:

[0140] The first coating 13 includes dielectric / electrolyte composite powder and PVB,

[0141] The dielectric / electrolyte composite powder is made of BaTiO with a molar ratio of 1:2 3 Powder and β″-Al 2 o 3 mixed powder,

[0142] PVB accounts for 25% of the sum of dielectric / electrolyte composite powder and PVB mass.

[0143] Furthermore, BaTiO 3 The particle size of the powder is 40nm, β″-Al 2 o 3 The particle size of the powder is 40nm.

[0144] Further, step (1) includes the following steps:

[0145] (11), the BaTiO 3 Powder and β″-Al 2 o 3 After the powder is mixed at a molar ratio of 1:2, grind for at least half an hour, and pass through a 200-mesh sieve to obtain a dielectric / electrolyte composite powder;

[0146] (12), add appropriate amount of PVB to the composite powder that step (11) obtains, add alcohol while grinding for at least half an hour to form a uniform first coating...

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Abstract

The invention relates to a sheet-shaped laminated full-solid super capacitor and a preparing method. The sheet-shaped laminated full-solid super capacitor comprises a full-solid super capacitor core and a housing, the top side of the housing is provided with a rectangular blind hole, the inner side wall of the rectangular blind hole is coated with conductive silver pulp, the upper surface of the housing is also provided with the conductive silver pulp, the full-solid super capacitor core is arranged in the rectangular blind hole in a clamped mode, the upper surface of the full-solid super capacitor core is provided with an encapsulating layer, and conductive silver pulp at the two sides of the top side of the housing is connected to an electrode lead. The preparing method of the sheet-shaped laminated full-solid super capacitor comprises the steps of 1, preparing the full-solid super capacitor core, 2, upwards folding and pressing aluminum foils at the two sides of the full-solid super capacitor core to cover the side face, 3, coating the conductive silver pulp, 4, welding the electrode lead, 5, putting the full-solid super capacitor core into the rectangular blind hole; 6, adding epoxy resin into the rectangular blind core to form an epoxy resin encapsulating layer, so that the sheet-shaped laminated full-solid super capacitor is obtained after being cured.

Description

technical field [0001] The invention relates to a capacitor and a preparation method, in particular to a sheet-like laminated all-solid supercapacitor and a preparation method. Background technique [0002] Environmental pollution and petrochemical energy are about to be exhausted, forcing people to develop new electric vehicles to effectively solve the problems of energy shortage and carbon emissions for traditional vehicles. At present, mature pure electric vehicles mainly use lithium-ion batteries as the power source, but due to the slow charging and discharging speed of lithium-ion batteries (on the order of hours) and low power density, the performance of pure electric vehicles is restricted compared with traditional fuel vehicles. Traditional supercapacitors are superior to automotive lithium-ion batteries in terms of power density, charge-discharge rate, and charge-discharge cycle times, but their energy density is much lower than that of lithium-ion batteries. So far...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/12H01G11/84
CPCY02E60/13
Inventor 胡英韩强
Owner 胡英
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