Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2007-05-08
2009-10-20
Crepeau, Jonathan (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
Reexamination Certificate
active
07604898
ABSTRACT:
The object of the invention is to provide positive electrode material in which a discharge rate characteristic and battery capacity are hardly deteriorated in the environment of low temperature of −30° C., its manufacturing method and a lithium secondary battery using the positive electrode material. The invention is characterized by the positive electrode material in which plural primary particles are flocculated and a secondary particle is formed, and the touch length of the primary particles is equivalent to 10 to 70% of the length of the whole periphery on the section of the touched primary particles.
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Partial EP Search Report in English of Appln. No. 04006130.1 dated Aug. 11, 2009.
Kasai Masahiro
Nakajima Genei
Yuasa Toyotaka
Antonelli, Terry Stout & Kraus, LLP.
Crepeau Jonathan
Hitachi , Ltd.
Hitachi Metals Ltd.
Shin-Kobe Electric Machinery Co. Ltd.
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