| abstract |
This composite particle is for an electrochemical element electrode and contains a cathode active material (A), a conductive agent (B), a particulate adhesive resin (C), a water-soluble polymer (D), and a non-water-soluble polysaccharide polymer fiber (E), wherein the water-soluble polymer (D) and non-water-soluble polysaccharide polymer fiber (E) are contained at a weight ratio of (D)/(E) = 0.25 to 7.0. |