Electrochemical device and electronic device

The embodiment of the invention relates to the technical field of electrochemical devices, in particular to an electrochemical device and an electronic device.The electrochemical device comprises an electrode assembly, the electrode assembly comprises a first pole piece, an isolating membrane and a second pole piece, the polarity of the first pole piece is opposite to that of the second pole piece, and the isolating membrane is arranged between the first pole piece and the second pole piece; the electrode assembly is characterized in that the electrode assembly comprises a thermal induction unit, the thermal induction unit comprises at least one thermal shrinkage layer, the thermal shrinkage layer is arranged on at least one surface of the isolating membrane, the thermal shrinkage layer is located between the first pole piece and the isolating membrane, and/or the thermal shrinkage layer is located between the second pole piece and the isolating membrane. After the electrochemical device is fully charged, con