Electrochemical device and electronic device

The invention provides an electrochemical device and an electronic device. The electrochemical device comprises a pole piece, the pole piece comprises a current collector and a material layer arranged on at least one surface of the current collector, and the material layer comprises porous substance particles; the maximum height of the porous substance particles in the thickness direction of the material layer is D, the thickness of the material layer is H, 0.2 < = D/H < 1, and 60 [mu] m < = H < = 300 [mu] m. The material layer comprises porous substance particles, and the D/H and H values are regulated and controlled within the range of the application, so that the infiltration of an electrolyte in the pole piece and the transmission of active metal ions are facilitated, the dynamic performance and the cycle performance of the electrochemical device are improved, and the energy density of the electrochemical device is also considered. 本申请提供了一种电化学装置和电子装置。电化学装置包括极片，极片包括集流体和设置于集流体至少一个表面上的材料层，材料层包括多孔物质颗粒；多孔物质颗粒在