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 for manufacturing an electr...

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Hauptverfasser: KOIKE MASAKI, ISHIMOTO SHUICHI, KUBOTA SATOSHI, MIYAMOTO NORIYUKI, SHIRAISHI YASUYOSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung: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 for manufacturing an electrode of a power storage device 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. A dibutyl phthalate oil absorption per 100 g of the conductive carbon mixture is equal to or less than 70% of a dibutyl phthalate oil absorption per 100 g of the other conductive carbon. The conductive carbon mixture covers the surface of an electrode active material particularly well, elongating the cycle life of a power storage device.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、蓄電デバイスの電極の製造のための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100g当たりのフタル酸ジブチル吸油量が、上記別の導電性カーボンの100g当たりのフタル酸ジブチル吸油量の70%以下であることを特徴とする導電性カーボン混合物である。この導電性カーボン混合物が電極活物質の表面を特に良好に被覆し、蓄電デバイスのサイクル寿命を長期化させる。【選択図】なし