| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a negative electrode plate for a nonaqueous secondary battery, capable of improving adhesion strength between a collector and a negative electrode active material mix layer while improving productivity of a drying process of negative electrode active material mix paint. <P>SOLUTION: A process of drying the negative electrode active material mix paint 9 painted on the collector 1 is provided at three or more positions. In the processes for removing water from the negative electrode active material mix paint 9, water included in the negative electrode plate is removed through a first process of drying it to reduce the water content at a speed of 1% or more per second in a range where water content is 80% or more and 100% or less, a second process of drying it to reduce the water content at a speed of 0.67% or less per second in a range where the water content is 40% or more and less than 80%, and a third process of drying it to reduce the water content at a speed of 1% or more per second in a range where the water content is less than 40%. <P>COPYRIGHT: (C)2009,JPO&INPIT |
