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1. (US20110039140) POSITIVE ELECTRODE FOR NONAQUEOUS BATTERY, ELECTRODE GROUP FOR NONAQUEOUS BATTERY AND METHOD FOR PRODUCING THE SAME, AND RECTANGULAR NONAQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME

Office : United States of America
Application Number: 12922634 Application Date: 16.11.2009
Publication Number: 20110039140 Publication Date: 17.02.2011
Publication Kind : A1
Prior PCT appl.: Application Number:PCTJP2009006123 ; Publication Number: Click to see the data
IPC:
H01M 10/02
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
02
Details
Applicants: Miyahisa Masaharu
Kato Seiichi
Yamashita Mao
Inventors: Miyahisa Masaharu
Kato Seiichi
Yamashita Mao
Priority Data: 2009-005484 14.01.2009 JP
2009-259088 12.11.2009 JP
Title: (EN) POSITIVE ELECTRODE FOR NONAQUEOUS BATTERY, ELECTRODE GROUP FOR NONAQUEOUS BATTERY AND METHOD FOR PRODUCING THE SAME, AND RECTANGULAR NONAQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME
Abstract: front page image
(EN)

A positive electrode 2 includes a double-coated part 14 including an active material layer 13 and a porous protective film 28 formed on each surface of a current collector core 12, a core exposed part 18, and a single-coated part 17 which is located between the double-coated part 14 and the core exposed part 18, and includes the active material layer 13 and the porous protective film 28 formed only on one of the surfaces of the current collector core 12. A plurality of grooves 10 are formed in each surface of the double-coated part 14, while the grooves 10 are not formed in the single-coated part 17. The grooves 10 are formed in a surface of the porous protective film 28 to extend in a surface of the active material layer 13. A positive electrode current collector lead 20 is connected to the core exposed part 18. The positive electrode 2 is wound in such a manner that the core exposed part 18 constitutes a last wound end, or the positive electrode 2 is accordion-folded in such a manner that the core exposed part 18 constitutes an outermost layer.


Also published as:
CN102017238KR1020100112643WO/2010/082259