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US 6,670,076 B1Granted
Spinel-type lithium-manganese oxide containing heteroelements preparation process and use thereof
AssigneeTosoh Corporation
InventorsEiichi Iwata, Ken-ichi Takahashi, Takashi Mori
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Abstract
A high-performance spinel-type lithium-manganese oxide for use as a material for a positive electrode of a Li secondary battery with inhibited Mn dissolution in an organic electrolyte, which is represented by the following formula: {Li}[Lix.My.Mn(2−x−Y)]O4+d wherein { } represents the oxygen tetrahedral sites in the spinel structure and [ ] represents the oxygen octahedral sites in the spinel structure, 0<x≦0.33, 0<y≦1.0, −0.5<d<0.8, and M represents at least one heteroelement other than Li and Mn, is disclosed.
Claims14
A spinel-type lithium-manganese oxide represented by the following formula:
- {Li}[Lix.Mn2−x−y1−y2.M1y1.M2y2]O4+d, wherein
- { } represents oxygen tetrahedral sites in a spinel structure,
- [ ] represents oxygen octahedral sites in the spinel structure,
- 0<x≦0.33,
- 0<y1,
- 0<y2,
- 0<y1+y2≦1.0,
- −0.5<d<0.8;
- M1 and M2 are each at least one element selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, B, Al, Ga, In, Si, Ge, Sn, Pb, P, As, Sb and Bi;
- and M1 and M2 are different.
7 more elements
Dependencies are inferred from the claim text.