To provide a manufacturing method of a battery having a capacity maintenance rate and high-temperature preservation characteristics compatibly.
The positive electrode has carboxylate having at least either one of fluorine atom and chlorine atom existing on the surface of a positive electrode active material layer. The carboxylate is at least either one of the structure as expressed by a formula (1) and a formula (2). In the formulae, A1-A3 are Li, Na, K, Mg, Ca, Sr, Ba, and at least one of A2 and A3 may be hydrogen atom. B is a functional group as expressed by CF3, CHF2, CH2F and CH3. Further, D1 and D2 are the structure as expressed by a formula (3) and a formula (4). In the formulae, 0≤(a, c, d, f)≤2, 1≤b≤15, and 1≤e≤16 apply. X is fluorine atom, but a part of it is hydrogen atom and other halogen atom etc.
OYAMA YUUDAI
HAYASHI KUNIHIKO
NAKAI HIDEKI
KATAYAMA SHINICHI
KUBOTA TADAHIKO
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