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Separator for electric double layer capacitor

A technology for electric double-layer capacitors and separators, which is applied in the direction of electrolytic capacitors, hybrid capacitor separators, capacitors, etc., can solve problems such as internal resistance, leakage capacity maintenance rate, vibration resistance, etc., and achieve high electrostatic capacity maintenance rate, The effect of reducing the unevenness of electrostatic capacity and enhancing the puncture strength

Inactive Publication Date: 2008-12-03
MITSUBISHI PAPER MILLS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this spacer has problems in internal resistance, leakage current, capacity retention rate, and vibration resistance

Method used

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  • Separator for electric double layer capacitor
  • Separator for electric double layer capacitor
  • Separator for electric double layer capacitor

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Experimental program
Comparison scheme
Effect test

Embodiment 1～96

[0087] Slurries 1-96 were subjected to wet papermaking to produce porous sheets 1-96. Next, the porous sheets 1 to 96 were calendered under the conditions shown in Table 11 to produce separators 1 to 96 for electric double layer capacitors. As the paper machine, a combined paper machine of a cylinder paper machine and an inclined short wire paper machine was used.

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Abstract

Disclosed is a separator for electric double layer capacitors which is composed of a porous sheet containing a fibrillated heat-resistant fiber, a polyester fiber having a fineness of not less than 0.01 dtex and less than 0.10 dtex, and a fibrillated cellulose. The separator for electric double layer capacitors is suitable for an electric double layer capacitor which operates at a high voltage of not less than 3 V.

Description

technical field [0001] The present invention relates to a separator for electric double layer capacitors. Background technique [0002] Conventionally, paper separators mainly composed of solvent-spun cellulose fibers or regenerated cellulose fibers have been used as separators for electric double layer capacitors (for example, refer to Patent Documents 1 to 3). Conventionally, electrodes made of activated carbon have been used as electrodes for electric double layer capacitors, but the energy density and power density are insufficient for applications such as auxiliary power supplies for automobiles and trains. Since the energy density and power density increase in direct proportion to the square of the voltage, the improvement of electrode materials is active. Compared with the upper limit voltage of the previous activated carbon electrode, which is about 2.5-2.7V, the upper limit voltage of the recently developed activated carbon electrode is about 3.7-4.2V. working elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/02
CPCH01G11/52Y02E60/13H01G9/02Y10T428/268Y10T442/68Y10T442/615Y10T442/681Y10T442/626Y10T442/697Y10T442/693Y10T442/614Y10T442/698
Inventor 佃贵裕绿川正敏佐藤友洋
Owner MITSUBISHI PAPER MILLS LTD
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