リチウムイオン二次電池の正極の分極時におけるアルミニウム集電体と炭素導電助材の密着性

概要

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The carbon conductor is exfoliated from the aluminum current collector when overcharged. That exfoliation results from stress caused by volume expansion of the carbon conductor, not from electrolyte wetting, internal electrostatic force, or a carbon intercalation reaction. Electrolysis of the anion is the reason. Therefore, we are taking care to evaluate adhesion properties not only at coating, but also at charging.