Surface treated anode active material and method of making the same, anode including the same, and lithium battery including the same
AssigneeSamsung SDI Co., Ltd.
InventorsJoung-won Park, Yoon-sok Kang, Han-su Kim, Jae-gu Yoon, Gue-sung Kim
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Abstract
An anode includes a collector; and an anode active material layer disposed on the collector comprises an anode active material, which is lithium oxide coated Li4Ti5O12, a conductive material, and a binder, wherein the lithium oxide intercalates and/or deintercalates lithium ions into and from the lattice structure of Li4Ti5O12. By coating the surface of the anode active material with lithium oxide, an anode including the surface-treated anode active material has a high capacity, high-rate properties, and a high initial efficiency.
Claims19
An anode, comprising:
- a collector;
- and
- an anode active material layer disposed on the collector, the anode active material layer comprising:
- an anode active material comprising Li4Ti5O12 coated with a lithium oxide that intercalates and/or deintercalates lithium ions into and from the Li4Ti5O12,
- a conductive material, and
- a binder.
A method of forming an anode active material, the method comprising:
- dissolving a lithium source and a niobium source in an organic solvent to prepare a precursor solution;
- spraying the precursor solution on a surface of Li4Ti5O12;
- and
- sintering the filtered product in air at a temperature of 400 to 500° C. for 0.5 to 1 hours.
A method of forming an anode active material, the method comprising:
- dissolving a lithium source and a niobium source in an organic solvent to prepare a precursor solution;
- immersing Li4Ti5O12 in the precursor solution;
- filtering the immersed Li4Ti5O12 and the precursor solution;
- and
- sintering the filtered product in air at a temperature of 400 to 500° C. for 0.5 to 1 hours.
A method of forming an anode active material, the method comprising:
- preparing a precursor solution including a lithium oxide in an organic solvent;
- spraying the precursor solution on a surface of Li4Ti5O12;
- and
- sintering the filtered product in air at a temperature of 400 to 500° C. for 0.5 to 1 hours.
A method of forming an anode active material, the method comprising:
- preparing a precursor solution including a lithium oxide in an organic solvent;
- immersing Li4Ti5O12 in the precursor solution;
- filtering the immersed Li4Ti5O12 and the precursor solution;
- and
- sintering the filtered product in air at a temperature of 400 to 500° C. for 0.5 to 1 hours.
Dependencies are inferred from the claim text.