Electrode and preparation method thereof, electrochemical apparatus, and electronic apparatus

An electronic apparatus, comprising an electrochemical apparatus, the electrochemical apparatus comprises an electrode, the electrode comprises a current collector and an active material layer disposed on one side or two sides of the current collector;

• wherein the active material layer comprises a first region and a second region, and in a thickness direction of the electrode, the first region is located between the current collector and the second region;
• and the first region is from a current collector side to ⅔ of thickness of the active material layer, and the second region is from ⅔ of thickness of the active material layer to a surface of the electrode;
• wherein
• a difference between a number of thermal weight loss peaks of the first region and a number of thermal weight loss peaks of the second region at 200° C. to 800° C. is ≥1 according to results of a thermogravimetric analysis performed on the active material layer in an inert atmosphere at a temperature rise rate of 10° C./min.