CONDUCTIVE CARBON MIXTURE, ELECTRODE ARRANGED BY USE OF THE MIXTURE, AND POWER STORAGE DEVICE HAVING THE ELECTRODE

To provide a conductive carbon mixture which is used together with an electrode active material in manufacturing an electrode of a power storage device and which enables the achievement of a power storage device with a good cycle life.SOLUTION: A conductive carbon mixture comprises: a conductive oxidation-processed carbon; and another conductive carbon different from the oxidation-processed carbon, wherein the oxidation-processed carbon covers the surface of the other conductive carbon. An average value of perimeter lengths of aggregate particles in a range up to 5% of a total number of aggregate particles from the largest aggregate particle when the aggregate particles in a dispersion liquid of the conductive carbon mixture are counted falls in a range of 40-65% of an average value of perimeter lengths of aggregate particles in a range up to 5% of a total number of aggregate particles from the largest aggregate particle when the aggregate particles in a dispersion liquid of the other conductive carbon are counted.SELECTED DRAWING: None 【課題】蓄電デバイスの電極の製造において電極活物質と共に使用され、良好なサイクル寿命を有する蓄電デバイスへと導く導電性カーボン混合物を提供する。【解決手段】導電性を有する酸化処理カーボンと該酸化処理カーボンとは別の導電性カーボンとを含み、上記酸化処理カーボンが上記別の導電性カーボンの表面を被覆している導電性カーボン混合物であって、該導電性カーボン混合物の分散液中の凝集体粒子のうちの最大の凝集体粒子から数えて全個数の５％までの範囲に含まれる各凝集体粒子の周囲長の平均値が、上記別の導電性カーボンの分散液中の凝集体粒子のうちの最大の凝集体粒子から数えて全個数の５％までの範囲に含まれる各凝集体粒子の周囲長の平均値の４０〜６５％の範囲であることを特徴とする導電性カーボン混合物である。【選択図】なし