COMPOSITE PARTICLE FOR ELECTRODE OF ELECTROCHEMICAL DEVICE

• Main Author: TOKURA KEITA
• Format: Patent
• Language: English
• Published: 09.11.2006
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide composite particle for electrodes of an electrochemical device by which an electrochemical device having a low internal resistance and a high capacity can be obtained. SOLUTION: A slurry containing an electrode active material, a conductive material, and a binder is spray-dried to form particles. Then, by a method of heating the particles to bridge-cure the binder or by other method, the composite particle for electrodes of the electrochemical device are obtained whose weight average particle diameter is 0.1-1,000 μm, and rate of change in particle diameter is 5-70% when compressed at a rate of loading of 0.9 mN/sec to the maximum load of 9.8 mN by a micro compression tester. COPYRIGHT: (C)2007,JPO&INPIT