Multi-component composite silica negative electrode material for lithium ion battery and preparation method thereof
A lithium-ion battery, multi-component composite technology, used in battery electrodes, electrical components, secondary batteries, etc.
Pending Publication Date: 2020-06-26
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AI-Extracted Technical Summary
Problems solved by technology
The invention discloses a multi-component composite silica negative electrode material for a lithium ion battery and a preparation method thereof, and relates to the technical field of new material. The negative electrode material comprises six elements of Si, O, Li, C, La and Zr, the negative electrode material comprises a plurality of particle units, and each particle unit is of a core-shell structure. According to the working principle of a lithium ion secondary battery, the process of ineffectively consuming the lithium material by the negative electrode material after the battery is formed is advanced to be completed in advance in the material manufacturing process, so that the demand characteristic of high initial efficiency and long cycle life of the negative electrode material is achieved, and meanwhile, the amount of ineffectively consumed lithium during charging and discharging after the battery is manufactured is reduced, the reaction that the negative electrode material reacts with the liquid electrolyte to generate the solid electrolyte after the battery is prepared is weakened, and the amount of lithium consumed for forming a solid electrolyte membrane due to the reaction is reduced, and accordingly the purposes of improving the initial efficiency and prolonging the cycle life can be achieved.
Cell electrodesSecondary cells
Composite materialCharge and discharge +5
- Experimental program(8)
- Comparison scheme(2)
- Effect test(1)
|Graininess||1.0 ~ 20.0||µm|
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