COMPOSITE ANODE STRUCTURE FOR HIGH ENERGY DENSITY LITHIUM-ION BATTERIES

• Main Authors: EL-ASHRY, MOSTAFA, M, TULEVSKI, GEORGE, S, TOBAIL, OSAMA
• Format: Patent
• Language: English; French
• Published: 30.05.2013
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

An electrode includes a conductive substrate (102) and a plurality of conductive structures (104) providing a compressible matrix of material. An active material (106) is formed in contact with the plurality of conductive structures. The active material includes a volumetrically expanding material which expands during ion diffusion such that the plurality of conductive structures provides support for the active material and compensates for volumetric expansion of the active material to prevent damage to the active material. Selon la présente invention, une électrode comprend un substrat conducteur (102) ainsi qu'une pluralité de structures conductrices (104) formant une matrice de matériau compressible. Un matériau actif (106) se trouve en contact avec la pluralité de structures conductrices. Ce matériau actif inclut un matériau à expansion volumétrique qui se dilate lors de la diffusion d'ions, de sorte que ladite pluralité de structures conductrices portent le matériau actif et compensent l'expansion volumétrique de ce matériau actif afin d'éviter de l'endommager.