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Electrochemical device, manufacturing method of electrode thereof and processing apparatus for electrode of electrochemical device

A manufacturing method and processing device technology, applied in the direction of electrode manufacturing, electrochemical generators, battery electrodes, etc., can solve problems such as unsuitable for mass production and difficulties in continuous production

Inactive Publication Date: 2008-10-15
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if such an electrochemical cell is constituted, continuous production becomes difficult, so it is not suitable for mass production

Method used

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  • Electrochemical device, manufacturing method of electrode thereof and processing apparatus for electrode of electrochemical device
  • Electrochemical device, manufacturing method of electrode thereof and processing apparatus for electrode of electrochemical device
  • Electrochemical device, manufacturing method of electrode thereof and processing apparatus for electrode of electrochemical device

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Embodiment Construction

[0017] figure 1 It is a schematic diagram showing the structure of an electrode processing apparatus of an electrochemical device according to an embodiment of the present invention. This processing device includes a lithium imparting unit, a first measurement unit 5 , a second measurement unit 6 , an estimation unit 8 , and an adjustment unit 9 . The first measurement unit 5 and the second measurement unit 6 are connected to the estimation unit 8 , and the adjustment unit 9 is connected to the estimation unit 8 and the lithium supply unit. First, the structure of the lithium imparting portion will be described.

[0018] Inside a vacuum chamber 12 connected to a vacuum pump 11 , an unwinding roller 2 , a film forming roller (can roller) 3 , an evaporation boat 4 , a first measuring unit 5 , a shutter 7 , and a winding roller 10 are provided. The electrode precursor 1 unwound from the unwinding roll 2 is set to be conveyed to the winding roll 10 via the film-forming roll 3 . ...

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PUM

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Abstract

According to a method for manufacturing an electrode of an electrochemical device, an electrode precursor capable of absorbing and releasing lithium is provided with lithium, and the resistance of the electrode precursor is measured after absorbing lithium. In addition, a processing apparatus for an electrode of an electrochemical device includes a lithium providing section for providing lithium to such an electrode precursor, and a first measurement section for measuring the resistance of the electrode precursor after absorbing lithium.

Description

technical field [0001] The present invention relates to a method for manufacturing electrodes of electrochemical devices such as non-aqueous electrolyte secondary batteries, and more specifically, to a technology for controlling the amount of lithium intercalation suitable for mass production that can supplement the irreversible capacity of electrodes with high precision. Background technique [0002] Electrochemical devices using lithium are being developed for use as main power sources of various devices because of their large theoretical capacity. Next, as an example, a non-aqueous electrolyte secondary battery will be described. [0003] Non-aqueous electrolyte secondary batteries are required to further increase their capacity. Therefore, as the negative electrode active material, a switch from carbon materials such as graphite having a theoretical capacity of less than 400 mAh / g to materials including silicon and tin having a theoretical capacity nearly 10 times is be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/02H01M10/40H01M4/139H01M4/1395H01M4/48
CPCH01M4/1395H01M10/0569H01M10/0568H01M10/0562H01M4/483H01M10/0567H01M4/1391H01M4/139Y02E60/122Y02E60/10
Inventor 武泽秀治
Owner PANASONIC CORP