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|1. (WO2017068985) LITHIUM-ION CELL|
|Applicants:||HITACHI CHEMICAL COMPANY, LTD.
Provided is a lithium-ion cell having excellent input characteristics, lifetime characteristics, and overcharging resistance. In order to achieve these objectives, the lithium-ion cell has a negative electrode that includes graphite and amorphous carbon, and a positive electrode that includes a lithium transition metal composite oxide. The content of graphite included in the negative electrode is 10-70 mass% in relation to the total amount of graphite and amorphous carbon included in the negative electrode, and the capacitance ratio, which is the ratio of the capacitance of the negative electrode to the capacitance of the positive electrode, is 1.3-2.2.