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|1. (WO2018038122) LITHIUM ION SECONDARY BATTERY|
|Applicants:||HITACHI CHEMICAL COMPANY, LTD.
|Title:||LITHIUM ION SECONDARY BATTERY|
This lithium ion secondary battery is provided with: a positive electrode that contains a spinel-type lithium-nickel-manganese composite oxide, which serves as a positive electrode active material, and amorphous carbon and graphite, which serve as conductive agents; and a negative electrode that contains, as a negative electrode active material, an active material where lithium ions are intercalated and deintercalated at a potential of 1.2 V or more with respect to the lithium potential.