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US 8,617,430 B2Granted
Amorphous and partially amorphous nanoscale ion storage materials
AssigneeA123 Systems, Inc.
InventorsYet-Ming Chiang, Anthony E. Pullen, Nonglak Meethong
Life of this patent
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Abstract
Amorphous or partially amorphous nanoscale ion storage materials are provided. For example, lithium transition metal phosphate storage compounds are nanoscale and amorphous or partially amorphous in an as-prepared state, or become amorphous or partially amorphous upon electrochemical intercalation or de-intercalation by lithium. These nanoscale ion storage materials are useful for producing devices such as high energy and high power storage batteries.
Claims18
A compound having the formula LiaCbMcNdXeOf, wherein M is one or more first-row transition metals;
- N is an element from Groups IIA, IIIA, IVA, VA, VIA, IIB, IIIB or VIIB of the periodic table;
- X is one or more of P, Si, Ge, As, S;
- 0≦a≦1;
- 0.001≦b≦0.10;
- 0.8≦c≦1.2;
- 0≦d≦0.10;
- 0.9≦e≦2.2;
- and 3.6≦f≦8.8.
5 more elements
Dependencies are inferred from the claim text.