Positive electrode material, and electrochemical apparatus and electronic apparatus containing same
AssigneeNingde Amperex Technology Limited
InventorsGang PENG, Ye LANG, Wenyuan LIU
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Abstract
A positive electrode material, including: a matrix and a first coating layer located on surface of the matrix, where based a molar content of metal elements other than Li in the first coating layer, a molar percentage of element Co in the first coating layer is W1; and based on a molar content of metal elements other than Li in the matrix, a molar percentage of element Co in the matrix is W2, where W1>W2; and the first coating layer includes a first region having a spinel phase structure.
Claims20
A positive electrode material, comprising:
- a matrix and a first coating layer located on a surface of the matrix;
- wherein based on a molar content of metal elements other than Li in the first coating layer, a molar percentage of element Co in the first coating layer is W1, and based on a molar content of metal elements other than Li in the matrix, a molar percentage of element Co in the matrix is W2, and W1>W2;
- and the first coating layer comprises a first region having a spinel phase structure.
An electrochemical apparatus, comprising a positive electrode material, the positive electrode material comprises a matrix and a first coating layer located on a surface of the matrix;
- wherein based on a molar content of metal elements other than Li in the first coating layer, a molar percentage of element Co in the first coating layer is W1, and based on a molar content of metal elements other than Li in the matrix, a molar percentage of element Co in the matrix is W2, and W1>W2;
- and the first coating layer comprises a first region having a spinel phase structure.
An electronic apparatus, comprising an electrochemical apparatus, the electrochemical apparatus comprises a positive electrode material, the positive electrode material comprises a matrix and a first coating layer located on a surface of the matrix;
- wherein based on a molar content of metal elements other than Li in the first coating layer, a molar percentage of element Co in the first coating layer is W1, and based on a molar content of metal elements other than Li in the matrix, a molar percentage of element Co in the matrix is W2, and W1>W2;
- and the first coating layer comprises a first region having a spinel phase structure.
Dependencies are inferred from the claim text.