Graphite material for negative electrodes of lithium secondary battery, manufacturing method for said material, and lithium secondary battery using same
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JX NIPPON OIL & ENERGY CORP
- Publication Date
- 2013-06-12
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a graphite material used as a negative electrode of a lithium secondary battery and a manufacturing method thereof. Specifically, it relates to a method for producing a graphite material used in a negative electrode of a lithium ion secondary battery having high durability while suppressing capacity degradation, and a lithium ion secondary battery including a negative electrode using the graphite material. Background technique
[0002] Lithium-ion secondary batteries are lighter in weight and have higher input and output characteristics than conventional secondary batteries such as nickel-cadmium batteries, nickel-metal hydride batteries, and lead batteries. Therefore, in recent years, they have been prepared as power sources for electric vehicles and hybrid vehicles. expected. Generally, such a battery is constructed by opposing a lithium-containing positive electrode capable of reversibly intercalating lithium and a negative...