| abstract |
Composite particles for an electrochemical device electrode including an electrode active material and a binding agent and having surfaces thereof coated with an external additive A, wherein at least one kind of the external additive A has a powder resistance of less than 10 Ω·cm, and, in the case where three axial diameters of the external additive A are a length diameter L A , a thickness t A , and a width b A , the length diameter L A is 0.1 to 5 μm and a ratio (b A /t A ) between the width b A and the thickness t A is 5 or more and less than 50. |