发明授权
US07524586B2 Materials for negative electrodes of lithium ion batteries 有权
锂离子电池负极材料

Materials for negative electrodes of lithium ion batteries
摘要:
The present invention provides materials for negative electrodes of lithium rechargeable batteries. These materials include lithium alloy composites. Each lithium alloy composite has a core-shell structure with one or more lithium alloy granules as its core and a carbon material as its shell. The average granule diameter of the lithium alloy granule is between 5 μm and 40 μm. The average thickness of the shell layer is between 50 Å and 1000 Å. The average diameter of the lithium alloy composite is between 10 μm to 50 μm. The methods of fabrication for the material includes the following steps: stirring lithium alloy granules in an organic solution with a coating substance, drying the solid product in the organic solution with a coating substance, calcining the dried product to obtain the negative electrode material with lithium alloy composites.
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