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US 12,614,721 B2Granted
Negative-electrode active material for secondary batteries, and secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYukihiro Oki, Kazuko Asano, Nanami Takeda, Mitsuhiro Hibino
Life of this patent
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Abstract
A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a cerium atom, and the plurality of the second atoms include 8 or more and 17 or less silicon atoms.
Claims11
A negative electrode active material for a secondary battery, comprising
- an intermetallic compound having a cage structure, wherein
- the cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom,
- the first atom is a cerium atom, and
- the plurality of the second atoms include 8 or more and 16 or less silicon atoms and 7 or more and 9 or less nickel atoms, and
- an atomic ratio of the silicon atoms to the nickel atoms (Si/Ni ratio) is 1 to 1.3.
2 more elements
Dependencies are inferred from the claim text.