Battery cell, battery device and power-consuming device

Abstract

Battery cell, comprising the following: a cathode foil, wherein the cathode foil comprises a cathode collector section and a cathode film layer provided on at least one side of the cathode collector section, wherein the cathode film layer comprises a lithium-containing phosphate, wherein the one-sided coating weight of the cathode film layer is 150 mg / 1540.25 mm² 2 up to 370 mg / 1540.25 mm 2 amounts; an anode foil, the anode foil comprising an anode collector section and an anode film layer provided on at least one side of the anode collector section, the anode film layer comprising a carbon-based material and a silicon-based material, wherein the mass fraction of the silicon element of the silicon-based material in the anode film layer is 0.3% to 10%, and wherein the one-sided coating weight of the anode film layer is 70 mg / 1540.25 mm² 2 up to 175 mg / 1540.25 mm 2amounts; an electrolyte solution, wherein the electrolyte solution comprises a chain carboxylic acid ester solvent, wherein the mass content of the chain carboxylic acid ester solvent in the electrolyte solution is 5% to 35%.

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