Patent attributes
The present application provide a secondary battery and an apparatus containing the secondary battery. The secondary battery includes an outer packaging film, an electrode assembly and an electrolyte accommodated, the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator, the positive electrode plate includes a positive electrode current collector and a positive electrode membrane arranged on at least one surface of the positive electrode current collector and including a positive electrode active material, the negative electrode plate includes a negative electrode current collector and a negative electrode membrane arranged on at least one surface of the negative electrode current collector and comprising a negative electrode active material, the positive electrode active material includes a lithium-contained nickel cobalt manganese oxide and/or a lithium-contained nickel cobalt aluminum oxide, the negative electrode active material includes a silicon-based material and a carbon material; the secondary battery satisfies: −4≤2*√{square root over (C)}*C
