Contemporary Amperex Technology Co., Ltd.

Yaping Huang

Yaohui Wang

Mingkui Guo

Fenggang Zhao

Yongshou Lin

This application provides a positive-electrode plate, including a current collector, and a first active substance layer and a second active substance layer that are sequentially disposed on a surface of the current collector. The first active substance layer includes a first positive-electrode active material, and the first positive-electrode active material includes at least one of a compound represented by Formula (I) LiMnMOAor a compound represented by Formula (II) LiMnNOB. The second active substance layer includes a second positive-electrode active material having a pH value of from 10˜12. In this application, the active substance layer that includes high-pH positive-electrode active material is disposed outside the active substance layer that includes a lithium manganese-based positive-electrode active material, so as to make a layered electrode plate.

Positive-electrode plate and manufacturing method thereof, lithium-ion secondary battery, battery module, battery pack, and apparatus

The present application relates to the electrochemical field, and in particular, to a negative electrode plate and a secondary battery including the electrode plate. The present application provides a negative electrode plate. The negative electrode plate includes a negative electrode current collector, a first negative electrode active substance layer disposed on at least one surface of the negative electrode current collector, and a second negative electrode active substance layer disposed on the first negative electrode active substance layer. The first negative electrode active substance layer includes a first negative electrode active substance, and the second negative electrode active substance layer includes a second negative electrode active substance. The first negative electrode active substance satisfies 1 GPa&#x2264;Young's modulus&#x2264;10 GPa, and the second negative electrode active substance satisfies 11 GPa&#x2264;Young's modulus&#x2264;30 GPa.

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Ningde, China

Yaping Huang