公开(公告)号：US20170317345A1

公开(公告)日：2017-11-02

申请号：US15643001

申请日：2017-07-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masao ABE ,  Akira OTANI ,  Yujiro KAWASHIMA ,  Yoshihiro UETANI ,  Hiroyoshi TAKE ,  Yutaka KISHII ,  Aimi MATSUURA ,  Yuki KAJISA ,  Yohei ANDO

IPC: H01M4/36 ,  H01M4/137 ,  H01M4/62 ,  H01M4/60 ,  H01M4/02 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/137 ,  H01M4/606 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/028

Abstract: The invention provides a cathode sheet for use in a nonaqueous electrolyte secondary battery, including a composite material comprising a collector and a layer of a cathode active material provided thereon. The layer of a cathode active material includes: (a) a conductive polymer and (b) at least one selected from a polycarboxylic acid and a metal salt of a polycarboxylic acid; and the conductive polymer is a polymer in a dedoped state or in a dedoped and reduced state. The polymer constituting the conductive polymer is at least one selected from polyaniline, a polyaniline derivative, polypyrrole, a polypyrrole derivative, and polythiophene; and the polycarboxylic acid is at least one selected from polyacrylic acid, polymethacrylic acid, polyvinylbenzoic acid, polyallylbenzoic acid, polymethallylbenzoic acid, polymaleic acid, polyfumaric acid, polyglutaminic acid, polyaspartic acid, alginic acid, carboxymethylcellulose, and a copolymer including repeating units of at least two of the polymers listed herein.