Preparation method of composite negative material of lithium-ion battery
A technology for lithium-ion batteries and negative electrode materials, which can be applied to battery electrodes, circuits, electrical components, etc., and can solve problems affecting the development and market prospects of lithium-ion batteries.
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[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0014] The embodiment of the present invention discloses a preparation method of a lithium-ion battery composite negative electrode material, comprising:
[0015] (1) Add nickel chloride solution and potassium hydroxide to the buffer solution at the same time, adjust the pH value to 10 with potassium hydroxide solution, and stir for 30 minutes;
[0016] (2) Filter the stirred solution and adjust the pH value to 7;
[0017] (3) Wash the neutral solution in step (2) with absolute alcohol, heat and dry for 250-300 minu...
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