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Electrode assembly for an ultracapacitor

A technology for supercapacitors and electrode assemblies, which is applied in hybrid capacitor electrodes, hybrid capacitor electrolytes, hybrid capacitor collectors, etc., and can solve problems such as increased equivalent series resistance

Pending Publication Date: 2019-01-15
AVX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem remains
For example, many conventional supercapacitors are sensitive to high temperatures, which can lead to increased equivalent series resistance (“ESR”)

Method used

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  • Electrode assembly for an ultracapacitor
  • Electrode assembly for an ultracapacitor
  • Electrode assembly for an ultracapacitor

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Embodiment Construction

[0010] It should be understood by those of ordinary skill in the art that the present discussion is a description of exemplary embodiments only, and is not intended to limit the broader aspects of the invention, which are embodied in exemplary configurations.

[0011] In general, the present invention relates to electrode assemblies for use in supercapacitors. The electrode assembly includes: a first electrode comprising a first carbonaceous coating (e.g., activated carbon particles) electrically coupled to a first current collector; and a second electrode comprising a second carbonaceous coating electrically coupled to a second current collector. Carbonaceous coatings (eg activated carbon particles). A separator is also located between the first electrode and the second electrode. The electrode assembly is formed by combining electrodes and separators, for example, by stacking, spiral winding, or the like.

[0012] Regardless of the technique employed, at least one current ...

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Abstract

An electrode assembly for an ultracapacitor is provided. The electrode assembly contains a first electrode comprising a first current collector electrically coupled to a first carbonaceous coating, asecond electrode comprising a second current collector electrically coupled to a second carbonaceous coating, and a separator positioned between the first electrode and the second electrode. At leasta portion of the first current collector projects beyond the first longitudinal edge to define a first projecting portion, wherein the offset ratio of the first projecting portion is from about 0.02 to about 0.3.

Description

Background technique [0001] Electrical energy storage batteries are widely used to provide electrical power to electronic, electromechanical, electrochemical and other useful devices. Electric double layer supercapacitors, for example, typically use a pair of polarizable electrodes containing carbon particles (eg activated carbon) impregnated with a liquid electrolyte. Large capacitance values ​​can be achieved due to the effective surface area of ​​the particles and the small spacing between the electrodes. However, problems remain. For example, many conventional supercapacitors are sensitive to high temperatures, which can lead to increased equivalent series resistance ("ESR"). Thus, there is currently a need for supercapacitors with improved electrical characteristics. Contents of the invention [0002] According to one embodiment of the present invention, an electrode assembly for a supercapacitor is disclosed that defines a length between opposing first and second lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/28
CPCH01G11/22H01G11/30H01G11/32H01G11/26H01G11/28H01G11/52H01G11/58H01G11/68H01G11/70Y02E60/13H01G11/78H01G11/82H01G11/42H01G11/60
Inventor S·汉森
Owner AVX CORP