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Lithium ion capacitor manufacturing method and lithium ion capacitor

A manufacturing method and capacitor technology, which are applied in the directions of hybrid capacitor electrodes, hybrid capacitor electrolytes, capacitors, etc., can solve the problems of large safety hazards, high production costs, complex processes, etc. Effect

Active Publication Date: 2015-06-10
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high production cost of lithium-ion capacitors, great potential safety hazards, and complicated processes, we propose a method for manufacturing lithium-ion capacitors. The invention can effectively solve the problem of high cost caused by lithium metal, porous current collectors, etc., Can improve safety and simplify process flow, suitable for industrial mass production

Method used

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  • Lithium ion capacitor manufacturing method and lithium ion capacitor

Examples

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Effect test

Embodiment 1

[0034] A manufacturing method of lithium ion capacitor, the steps are as follows:

[0035] (1) The slurry with activated carbon as the active material is attached to the non-porous aluminum foil as the positive electrode, and the slurry with the mesophase carbon microspheres as the active material is attached to the non-porous copper foil as the negative electrode. PP / PE / PP three-layer polymer It is a separator, which is laminated into a battery in the manner of a separator, a negative electrode, a separator, and a positive electrode, and fixed with tape, and welds the positive electrode current collector and the negative electrode current collector to the positive and negative electrode tabs or lead terminals respectively;

[0036] (2) After drying, immerse the cell in a beaker containing LiPF6-EC / PC / DEC solution;

[0037] (3) Connect the positive and negative poles of the charge and discharge tester to the positive and negative electrodes respectively, and charge to 3.8V with a con...

Embodiment 2

[0040] A manufacturing method of lithium ion capacitor, the steps are as follows:

[0041] (1) The slurry with activated carbon as the active material is attached to the non-porous aluminum foil as the positive electrode, the slurry with artificial graphite as the active material is attached to the non-porous copper foil as the negative electrode, and the PP / PE / PP three-layer polymer is the separator. According to the method of diaphragm, negative electrode, diaphragm, and positive electrode, they are laminated to form a battery, and fixed with tape, and the positive electrode current collector and the negative electrode current collector are respectively welded to the positive and negative electrode tabs or lead terminals;

[0042] (2) After drying, immerse the battery cell in a beaker filled with LiBF4-PC / DMF solution;

[0043] (3) Connect the positive and negative poles of the charge and discharge tester to the positive and negative electrodes respectively, and charge to 3.8V with...

Embodiment 3

[0046] A manufacturing method of lithium ion capacitor, the steps are as follows:

[0047] (1) The slurry with activated carbon as the active material is attached to the porous aluminum foil as the positive electrode, the slurry with hard carbon as the active material is attached to the porous copper foil as the negative electrode, and the single-layer PP polymer film is the separator. The separator and positive electrode are wound into batteries and fixed with tape, and the positive and negative current collectors are welded to the positive and negative tabs or lead terminals respectively;

[0048] (2) After drying, immerse the battery in Li 2 CO 3 Organic solution in a beaker;

[0049] (3) Connect the positive and negative poles of the charge and discharge tester to the positive and negative electrodes respectively, and charge to 3.8V with a constant current equivalent to 0.2C, then disconnect the circuit and stand for a certain period of time to allow the monomer to discharge natu...

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Abstract

The invention provides a lithium ion capacitor manufacturing method and a lithium ion capacitor. The manufacturing method includes the steps: (1) assembling a cell; (2) immersing the cell in organic solution containing lithium salt; (3) respectively connecting a positive electrode and a negative electrode with a charge-discharge tester, taking one-time discharge after one-time charge as a cycle and totally performing 1-100 cycles to pre-embed lithium into the negative electrode; (4) taking out the cell, placing the cell into a packaging shell, injecting electrolyte and assembling the single lithium ion capacitor. The manufacturing method can effectively solve the problem of too high cost caused by lithium metal, multi-hole current collector and the like, safety can be improved, technical processes are simplified, and the manufacturing method is applicable to industrial large-scale production.

Description

Technical field [0001] The invention relates to the field of lithium ion capacitors, in particular to a method for manufacturing a lithium ion capacitor and a lithium ion capacitor. Background technique [0002] Lithium-ion capacitors are a new type of typical hybrid energy storage device that "internally merges" lithium-ion batteries and electric double-layer supercapacitors. It combines the high specific energy of lithium-ion capacitors with the high specific power and long life of supercapacitors. It is used in military aerospace , Green energy and other fields have broad application prospects. At present, the production of lithium ion capacitors generally adopts the method in Fuji Heavy Industries' invention patent CN101138058B, that is, lithium metal is used as the lithium source, the metal foil with through holes is used as the current collector, and the lithium metal is placed at the opposite position of the negative electrode. The lithium metal and the negative electrode...

Claims

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Application Information

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IPC IPC(8): H01G11/84H01G11/06
CPCH01G11/06H01G11/14H01G11/38H01G11/50H01G11/60H01G11/62H01G11/84Y02E60/13
Inventor 阮殿波曾福娣傅冠生
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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