Method of making lithium-ion battery anode
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsZi-Xin Hong, Zhen-Han Fang, Jia-Ping Wang, Shou-Shan Fan
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Abstract
A method of making lithium-ion battery anode comprising step (S1)-step (S3). step (S1): providing a nano-silicon material, and coating a positively charged carbonizable polymer on a surface of the nano-silicon material, to obtain a nano-silicon coated with the positively charged carbonizable polymer. Step (S2): adding CNTs and the nano-silicon coated with the positively charged carbonizable polymer to a solvent; and performing an ultrasonic dispersion to obtain a dispersion. And step (S3): vacuum filtering the dispersion, to obtain a composite film of the CNTs and the nano-silicon coated with positively charged carbonizable polymer.
Claims15
A method of making lithium-ion battery anode comprising:
- step (S1):
- providing a nano-silicon material, and performing amino grafting on the nano-silicon material to obtain a nano-silicon material with surface grafted amino groups, coating positively charged carbonizable polymers on a surface of the nano-silicon material with surface grafted amino groups, to obtain a nano-silicon coated with the positively charged carbonizable polymers;
- step (S2):
- providing a solvent and carbon nanotubes (CNTs);
- adding the CNTs and the nano-silicon coated with the positively charged carbonizable polymers to the solvent;
- and then performing an ultrasonic dispersion to obtain a dispersion;
- and
- step (S3):
- vacuum filtering the dispersion, to obtain a composite film of the CNTs and the nano-silicon coated with the positively charged carbonizable polymers.
Dependencies are inferred from the claim text.