| 摘要 |
PROBLEM TO BE SOLVED: To increase capacity, enhance charging efficiency, make discharging curve flat, enhance strength, and lengthen life by covering the surface of crystalline carbon with an amorphous carbon film and joining the films each other. SOLUTION: The surface of powdery or fibrous crystalline carbon is covered with an amorphous carbon film, and the films are joined. 50-98wt.% of the mixture is formed with the crystalline carbon and the balance is formed with the amorphous carbon. A desired film electrode is manufactured in such a way that powdery or fibrous crystalline carbon and an organic polymer material are mixed, a mixture is formed in a film, the film is baked at a temperature (500-2000 deg.C) at which the organic polymer material is converted in amorphous carbon to form the amorphous carbon from the organic polymer material. Since the film electrode is formed with the crystalline carbon and the amorphous carbon, discharging curve is made flat, charge/discharging efficiency is enhanced, discharging capacity is increased, strength is enhanced, the breakdown of the material is hardly produced, and the life is lengthened. |
