Positive electrode active material and secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKosuke Kuroda, Hiroshi Kawada, Atsushi Fukui
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Abstract
Provided is a positive electrode active material including a first lithium oxide represented by Li2+xNi1−yA1yO2−zA2z, where −0.5≤x≤0.3, 0≤y≤0.1, and 0≤z≤0.3. Here, at least one of y and z is not 0. A1 includes at least one selected from the group consisting of Ga, Bi, Ba, Y, Sn, Ca, W, and Ta. A2 includes at least one selected from the group consisting of halogen elements and S.
Claims12
A positive electrode active material for secondary batteries, the positive electrode active material comprising:
- a first lithium oxide represented by a composition formula (1):
- Li2+xNi1−yA1yO2−zA2z, where −0.5≤x≤0.3, 0≤y≤0.1, and 0≤z≤0.3,
- at least one of y and z being not 0,
- A1 including at least one selected from the group consisting of Ba, Ca, W, and Ta,
- A2 including at least one selected from the group consisting of halogen elements and S.
A positive electrode active material for secondary batteries, the positive electrode active material comprising:
- a first lithium oxide represented by a composition formula (1):
- Li2+xNi1−yA1yO2−zA2z, where −0.5≤x≤0.3, 0≤y≤0.1, and 0<z≤0.3,
- A1 including at least one selected from the group consisting of Ga, Bi, Ba, Y, Sn, Ca, W, and Ta,
- A2 including at least one selected from the group consisting of halogen elements and S,
- wherein the first lithium oxide has a crystal structure belonging to a space group Immm.
Dependencies are inferred from the claim text.