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AssigneeNingde Amperex Technology Limited
InventorsShiyang CHENG, Hui ZHANG, Ye LANG, Leimin XU
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A positive electrode material, where when an electrode including the positive electrode material is assembled with a lithium sheet into a coin cell, and the coin cell is charged to 4.4V at a constant current of 0.1C within a range of 2.8V to 4.4V, based on a weight of the positive electrode material, a specific charge capacity of the positive electrode material is greater than or equal to 220 mAh/g, and a cell volume change rate ΔV1 of the positive electrode material is 7% to 11%. The positive electrode material, while having a high specific charge capacity, exhibits excellent structural stability, thereby improving float charge performance and high-temperature storage performance of the electrochemical device.
A positive electrode material, wherein a specific charge capacity of the positive electrode material is greater than or equal to 220 mAh/g, and a cell volume change rate ΔV1 of the positive electrode material is 7% to 11%;
An electrochemical device, comprising a positive electrode plate, and the positive electrode plate comprises a positive electrode material, wherein a specific charge capacity of the positive electrode material is greater than or equal to 220 mAh/g, and a cell volume change rate ΔV1 of the positive electrode material is 7% to 11%;
An electronic device, comprising an electrochemical device, the electrochemical device comprises a positive electrode plate, and the positive electrode plate comprises a positive electrode material, wherein a specific charge capacity of the positive electrode material is greater than or equal to 220 mAh/g, and a cell volume change rate ΔV1 of the positive electrode material is 7% to 11%;
Dependencies are inferred from the claim text.