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Textile electrode and accumulator containing such an electrode

A battery and electrode technology, applied in the direction of active material electrodes, electrode carriers/current collectors, negative electrodes, etc., can solve problems such as increasing battery energy density

Inactive Publication Date: 2009-06-03
ELECTRICITE DE FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, an increase in the specific capacitance of the negative electrode leads to an increase in the energy density of the battery

Method used

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  • Textile electrode and accumulator containing such an electrode
  • Textile electrode and accumulator containing such an electrode
  • Textile electrode and accumulator containing such an electrode

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Embodiment Construction

[0037] As described in patent application FR 2 870 639, of which the present invention is only a refinement, the nanostructured layer containing nanoparticles of at least one compound of transition metals present in the electron collector is the conversion layer, i.e., by The layer obtained by chemical or electrochemical conversion of the surface of the substrate metal. The advantage of such a conversion layer is, in particular, the good adhesion between the formed surface layer and the substrate, and the convenience that such a layer can be produced by a simple treatment of the original metal. In addition, in metal surface treatment technology, the excellent textile structure of the electrode according to the invention brings special advantages. This is because it is essential in the process of forming the electrochemically active material required for the fabric structure to protect the electrodes, ie not to cause openings or weaves of the fabric to disappear through barrier...

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Abstract

The invention relates to an electrode comprising (a) an electron collector containing one or more transition metals from the groups 4 to 12 of the Periodic Classification of the Elements, and (b) a material that is electrochemically active, present on the surface of the electron collector in the form of a nano-structured conversion layer containing nano-particles or agglomerates of said nano-particles, wherein the nano-particles have a mean diameter of between 1 and 1000 nm, preferably between 10 and 300 nm, wherein said electrochemically active material contains at least one compound of the transition metal or transition metals present in the electron collector, characterised by the fact that the electrode is a textile formed by metallic wires or fibres. The invention also relates to a half-accumulator and an accumulator containing such a textile electrode.

Description

technical field [0001] The invention relates to a new type of electrode based on a fabric of metal fibers and / or wires with a nanostructured surface, and to a half-battery and battery comprising the electrode. Background technique [0002] Strong market demand for portable electronic devices has intensified competition in the field of rechargeable batteries or accumulators. Following the rapid growth of mobile phones, the sales volume of portable computers is increasing rapidly at an annual growth rate of 20%, which puts forward new requirements for its power supply system. In addition, camcorders, digital photographic equipment, CD players, wireless devices and many toys generally increase the demand for rechargeable batteries. Finally, the 21st century will bring great demand for electric vehicles, hybrid vehicles and rechargeable hybrid vehicles, which will lead to increasingly stringent international regulations on exhaust emissions and the greenhouse effect of heat eng...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/74H01M4/04H01M4/131H01M4/48H01M4/485H01M10/0525H01M10/36
CPCH01M2004/027H01M4/0492Y02E60/122H01M4/485H01M10/0525Y02T10/7011H01M4/747H01M4/669H01M4/74H01M2004/021H01M4/131Y02E60/10H01M4/02B82Y30/00Y02T10/70
Inventor 阿罗蒂耶·维达尔斯蒂芬尼·拉斯考德
Owner ELECTRICITE DE FRANCE
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