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US 12,431,491 B2Granted
Silicon oxide composite for lithium secondary battery anode material and method for manufacturing same
AssigneeDaejoo Electronic Materials Co., Ltd.
InventorsSeung Min Oh, Jeong Gyu Park, Hyeon Soo Park, Young Min Jeon, Jong Chan Lim
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Abstract
The present invention relates to a silicon oxide composite for a lithium secondary battery anode material and a method for manufacturing same and, more specifically, to a silicon oxide composite for a lithium secondary battery anode material and a method for manufacturing same, wherein the silicon oxide composite comprises a Si cluster and MgxSiOy(0≤x≤3, 0≤y≤5) formed on a peripheral portion of the Si cluster.
Claims12
A silicon oxide composite for a lithium secondary battery anode material, comprising:
- a Si cluster;
- and
- magnesium silicate, which is indicated as MgxSiOy (0.5≤x≤2, 2.5≤y≤4), formed on a peripheral portion of the Si cluster, wherein the Si;
- cluster and the MgxSiOy(0.5≤x≤2, 2.5≤y≤4) formed on a peripheral portion of the Si cluster form a core-shell structure,
- wherein the Si cluster is prepared by using a Si/SiOx/SiO2 raw material powder mixture, and wherein the silicon oxide composite comprises Mg in a ratio of 2 to 10 parts by weight relative to 100 parts by weight of the total weight of the silicon oxide composite.
2 more elements
Dependencies are inferred from the claim text.