Sanyo Electric Co., Ltd.

Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Kazumi Hasegawa

Koji Nishio

Nobuhiro Furukawa

Tetsumi Suzuki

Masahisa Fujimoto

Osamu Ando

Noriyuki Yoshinaga

New electrically conductive material suitable particularly for a secondary battery and a process for preparing the electrically conductive material are provided. The process for the preparation of the electrically conductive material comprises the steps of reacting a compound having conjugated double bonds with an oxidizing agent wherein the oxidizing agent comprises a cupric compound and a nitrile compound. The electrically conductive material comprises grainy polypyrrole obtained by reacting a pyrrole compound with an oxidizing agent which is constituted by primary particles having an average particle size of 0.01 to 0.4 .mu.m and has a press molding density of 1 to 1.6 g/cm.sup.3.

Electrically conductive material and a process for the preparation of

An electrically conductive material containing no substantial amount of water and prepared by polymerizing, in the presence of an oxidizing agent, a compound having conjugated double bonds on a base material in a gas phase. The base material has spaces capable of retaining the oxidizing agent. The electrically conductive material is used for at least one electrode of a secondary battery.

Electrically conductive material and secondary battery using the

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Yokohama, Japan

Kazumi Hasegawa