| 摘要 |
PROBLEM TO BE SOLVED: To realize an electrode constitution for reconciling binding property and permeability of a guest, and provide a manufacturing method to manufac ture a secondary battery in a secondary battery having an electrode which contains active material particles and an organic binding agent. SOLUTION: In a negative electrode, polyvinylidene fluoride of an organic binding agent 4b is unevenly distributed, so as to become thick in a binding contact point part 4c between spherical graphite particles which are active material particles 4a and become thin in a part except for the binding contact point part 4c. For a degree of uneven distribution, the peak intensity ratio of a fluorine element in an Auger electron spectroscopic analysis is desirably set not less than 2 in the binding contact point part 4c and a part excluding it. |
