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Ultracapacitor electrode with controlled carbon content

A content and electrode technology, applied in the field of electrode and electrode preparation, which can solve problems such as capacitance attenuation

Inactive Publication Date: 2008-11-26
MAXWELL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, due to the battery structure and electrode characteristics, the capacitance decays during the cycle life

Method used

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  • Ultracapacitor electrode with controlled carbon content
  • Ultracapacitor electrode with controlled carbon content
  • Ultracapacitor electrode with controlled carbon content

Examples

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Embodiment Construction

[0025]In the present invention, the words "implementation mode" and "variation" are used to refer to a specific device, process, or manufactured product, but not necessarily to one and the same device, process, or manufactured product. Therefore, "an embodiment" (or similar expressions) used in a certain place or context refers to a specific device, process, or manufacture; and, the same or similar expressions in different places may be Refers to the same or different apparatus, process, or manufacture. Likewise, "some embodiments," "certain embodiments," or similar expressions used in one place or context may refer to one or more specific devices, processes, or manufactures; The same or similar expressions in may refer to the same or different devices, processes, or manufactures. The expression "alternative embodiment" and similar expressions are used to indicate one of many different possible implementations. The number of possible implementations is not necessarily limite...

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Abstract

An active electrode material is made by blending or mixing a mixture of activated carbon, optional conductive carbon, and binder; wherein the activated carbon has a high soakability to provide a reduced capacitance fade. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor.

Description

technical field [0001] The present invention generally relates to electrodes and their preparation. More specifically, the present invention relates to electrodes for energy storage devices, such as electrochemical double layer capacitors. Background technique [0002] Electrodes are widely used in many devices that store electrical energy, including primary batteries (non-rechargeable), secondary batteries (rechargeable), fuel cells, and capacitors. Important characteristics of electrical energy storage devices include energy density, power density, maximum charge rate, internal leakage current, equivalent series resistance (ESR), and / or durability, which is the ability to withstand multiple charge-discharge cycles. ability. Double-layer capacitors, also known as supercapacitors and ultracapacitors, have gained popularity in many energy storage applications for a number of reasons. These reasons include the availability of double layer capacitors with high power density ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/058H01G9/04
CPCY02E60/13H01G11/38H01G9/058H01G11/22H01G11/32H01G11/86
Inventor 习笑梅钟黎君
Owner MAXWELL TECH INC
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