To provide a coating composition for a cathode active substance layer capable of stably manufacturing a cathode plate for a nonaqueous electrolyte solution secondary battery hardly generating tailing at coating, excellent in battery safety, and with enough battery capacity, to provide a cathode plate for a nonaqueous electrolyte solution secondary battery hardly generating tailing, excellent in battery safety, and with enough battery capacity, as well as to provide a nonaqueous electrolyte solution secondary battery of high capacity and high quality assembled with the cathode plate.
The coating composition for the cathode active substance layer contains 100 weight parts of cathode active substance, 0.5 to 2.5 weight parts of a conductive material, and 1.7 to 3.7 weight parts of a binding material, in which the binding material contains polyvinylidene fluoride with a weighted average molecular weight of 300 to 400 thousand by 50 wt.% or more in reference to a total binding material volume. Further, the cathode plate for the nonaqueous electrolyte solution secondary battery and the secondary battery using the cathode have the coating composition for the cathode active substance layer provided at one or both faces of a collector.
OYARI YOSHIAKI
TSUNEKAWA MASAYUKI
HASHIMOTO YUSUKE
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| JP2005251684A | 2005-09-15 |
| WO2003049216A1 | 2003-06-12 |
Akihiko Yamashita
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