Negative electrode material and electrochemical apparatus
AssigneeNingde Amperex Technology Limited
InventorLiang LI
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Abstract
A negative electrode material including a silicon-carbon material. The silicon-carbon material contains element silicon, element carbon, element oxygen, and a metal element. Based on a mass of the silicon-carbon material, a mass percentage of element silicon is a, where 10%≤a≤90%; and a mass percentage of the metal element is x, where 0.01%<x<0.5%. The metal element includes at least one of barium, calcium, magnesium, iron, aluminum, or manganese.
Claims20
A negative electrode material, comprising a silicon-carbon material, wherein the silicon-carbon material contains an element silicon, an element carbon, an element oxygen, and a metal element;
- based on a mass of the silicon-carbon material, a mass percentage of the element silicon is a, wherein 10%≤a≤90%, and a mass percentage of the metal element is x, wherein 0.01%<x<0.5%;
- and the metal element comprises at least one selected from the group consisting of barium, calcium, magnesium, iron, aluminum, and manganese.
An electrochemical apparatus, comprising a positive electrode, a negative electrode, and an electrolyte;
- wherein the negative electrode comprises a negative electrode material;
- wherein the negative electrode material comprises a silicon-carbon material;
- wherein the silicon-carbon material contains an element silicon, an element carbon, an element oxygen, and a metal element;
- based on a mass of the silicon-carbon material, a mass percentage of the element silicon is a, wherein 10%≤a≤90%, and a mass percentage of the metal element is x, wherein 0.01%<x<0.5%;
- and the metal element comprises at least one selected from the group consisting of barium, calcium, magnesium, iron, aluminum, and manganese.
Dependencies are inferred from the claim text.