Modified hard carbon negative electrode material for lithium ion battery and preparation method for modified hard carbon negative electrode material
The invention discloses a modified hard carbon negative electrode material for a lithium ion battery and a preparation method for the modified hard carbon negative electrode material. The preparation method is simple and feasible, the modified hard carbon negative electrode material can be prepared through uniform mixing, pyrolysis, coating and the like, the production cost is low and the preparation method can be applied to industrial production. The modified hard carbon negative electrode material has high electrochemical properties and high lithium intercalating and separating capacity, has the first discharge specific capacity of more than 926 mAh/g, and has the first discharge specific capacity of 982 mAh/g and the first charge discharge efficiency of 93 percent in the optimal mode of execution, and is suitable for power and energy storage lithium ion batteries.