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Method of producing electrochemical device, and the electrochemical device

A manufacturing method and electrochemical technology, applied in the direction of electrode manufacturing, electrochemical generator, secondary battery manufacturing, etc., can solve the problems of impracticality, decline of charge and discharge characteristics, and lack of integration of laminated bodies, etc., and achieve the effect of reliable formation

Active Publication Date: 2005-05-25
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, since the handling performance of the laminated body during manufacture and in use is significantly reduced, and the laminated body is not integrated, the polarizable electrodes and separators in the laminated body are misaligned during use, resulting in a charging problem. Discharge characteristics drop significantly, so this method is not realistic
In particular, this problem is remarkably likely to occur when a plurality of laminated bodies are stacked and connected in series or in parallel.

Method used

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  • Method of producing electrochemical device, and the electrochemical device
  • Method of producing electrochemical device, and the electrochemical device
  • Method of producing electrochemical device, and the electrochemical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] Through the following steps, the production with figure 1 The electrochemical device shown is an electrochemical device (electric double layer capacitor) of the same structure.

[0170] (1) Preparation of electrodes

[0171] The anode (polarizable electrode) and the negative electrode (polarizable electrode) were produced by the following procedure. First, the activated carbon material (activated carbon) that has been activated, the thermoplastic resin (fluororubber (T B=200°C) and conduction aid (carbon black) according to their mass ratio of carbon material: conduction aid: binder = 8:1:1 ratio, put it into MIBK (methyl isocyanate) as a solvent butanone) and then mixed to prepare a coating liquid for electrode formation (hereinafter referred to as "coating liquid L1")

[0172] Next, the coating liquid L1 was uniformly coated on one surface of a current collector (thickness: 50 μm) made of aluminum foil. Then, MIBK was removed from the coating film by drying treatm...

Embodiment 2

[0185] An electrochemical device was fabricated by the same procedures and conditions as the electrochemical device of Example 1 except that the heat treatment temperature T1 in the heat treatment step was set to 200°C.

Embodiment 3

[0187] In addition to making the pressure of the heat treatment process to 60kg / cm 2 Otherwise, an electrochemical device was produced by the same steps and conditions as the electrochemical device of Example 1.

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Abstract

As the first electrode and the second electrode, electrodes having the following structure are used, that is, the structure is: there is a current collector and an electron conductive porous layer arranged between the current collector and the separator, and the porous The bulk layer includes at least electron-conductive porous particles and a thermoplastic resin capable of bonding the porous particles to each other and having a softening point TB lower than the softening point Ts of the separator. Including heat treatment of the laminated body at a heat treatment temperature T1 satisfying the conditions shown in formula (1): TB≤T1<Ts, making the collector of the first electrode in the laminated body, the porous body layer of the first electrode, and the separator and a heat treatment step in which the porous body layer of the second electrode and the current collector of the second electrode are brought into an integrated state.

Description

technical field [0001] The present invention relates to a manufacturing method of an electrochemical device and an electrochemical device obtained by the manufacturing method. Specifically, it relates to a method for manufacturing an electrochemical device including an electrochemical capacitor mainly including an electric double layer capacitor and a secondary battery mainly including a lithium ion secondary battery, and an electrochemical device obtained by the manufacturing method. Background technique [0002] Electrochemical capacitors, mainly electric double layer capacitors, and nonaqueous electrolyte secondary batteries, mainly lithium ion secondary batteries, are electrochemical devices that can be easily reduced in size and weight. Therefore, it is expected to be used as a power source or backup power source for portable devices (small electronic devices), and as an auxiliary power source for electric vehicles or hybrid vehicles, and various studies have been condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/02H01G9/04H01G11/10H01G11/24H01G11/26H01G11/38H01G11/42H01G11/52H01G11/84H01G11/86H01M2/16H01M10/04H01M10/05H01M10/0585
CPCH01G11/24H01G11/52H01G11/86H01M4/02H01M4/0404H01M4/0409H01M4/0435H01M4/13H01M4/139H01M10/0413H01M10/0525H01M10/0585Y10T29/49115Y02T10/70Y02E60/10H01M50/46Y02P70/50H01G11/38H01G9/00H01M10/04Y02E60/13H01G11/74H01G11/22
Inventor 高桥哲哉片井一夫宫木阳辅
Owner TDK CORPARATION
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