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AssigneeContemporary Amperex Technology Co., Limited
InventorsJunpeng Xue, Dandan Wang, Shoujiang Xu, Xiaoshan Dai, Baojian Zhu, Xichen Wei
Estimating the term…
A battery cell and an electric device comprising same. The battery cell comprises an electrode assembly, which comprises a positive electrode sheet and a separator, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode membrane layer arranged on at least one surface of the positive electrode current collector, the positive electrode membrane layer comprises a positive electrode active material, the positive electrode active material comprises a layered lithium-containing transition metal oxide, and the volume distribution particle size Dv50 of the positive electrode active material is smaller than or equal to 6.5 μm; and the separator comprises a porous substrate and a porous coating arranged on at least one surface of the porous substrate, and the porous coating comprises a fiber material and a granular filler. The electric device can make a battery have a high energy density, good low-temperature power performance and cycling performance.
A battery cell, comprising an electrode assembly comprising a positive electrode plate and an separator, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film layer disposed on at least one surface of the positive electrode current collector, the positive electrode film layer comprises a positive electrode active material, the positive electrode active material comprises a layered lithium-containing transition metal oxide, and a volume distribution particle size Dv50 of the positive electrode active material is less than or equal to 6.5 μm;
Dependencies are inferred from the claim text.