Electrochemical apparatus and electronic device

Abstract

An active material layer includes a first active material and a second active material, and a gram capacity of the first active material is greater than a gram capacity of the second active material. The active material layer has a first surface facing away from the current collector, the first surface is provided with a plurality of pore structures, and a ratio of a volume of all of the plurality of pore structures to a volume of the active material layer is A, where 2%≤A≤20%. Adding the first active material with a larger gram capacity can increase the capacity of the electrochemical apparatus. The pore structure can become a new lithium ion liquid phase transmission channel, and 2%≤A≤20%.

Dependencies are inferred from the claim text.