The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
May. 09, 2005
Kohei Suzuki, Yao, JP;
Masao Fukunaga, Osaka, JP;
Toshihide Murata, Izumiotsu, JP;
Kazunori Kubota, Moriguchi, JP;
Tsumoru Ohata, Kyoto, JP;
Kohei Suzuki, Yao, JP;
Masao Fukunaga, Osaka, JP;
Toshihide Murata, Izumiotsu, JP;
Kazunori Kubota, Moriguchi, JP;
Tsumoru Ohata, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method for producing a non-aqueous electrolyte secondary battery comprising the steps of: (i) mixing a positive electrode active material, a first binder A and a dispersion medium to prepare a paste A, the active material comprising a lithium-containing transition metal oxide; (ii) mixing a conductive agent, a second binder B and a dispersion medium to prepare a paste B, the conductive agent comprising carbon black; (iii) mixing the paste A and the paste B to prepare a positive electrode material paste C; (iv) applying the positive electrode material paste C onto a positive electrode core member and rolling and drying the resultant member to prepare a positive electrode; and (v) fabricating a battery using the positive electrode, a negative electrode and a non-aqueous electrolyte, wherein contact angle θbetween the non-aqueous electrolyte and the binder A and contact angle θbetween the non-aqueous electrolyte and the binder B satisfy the formula (1): θ−θ≧15°.