ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS

An electrochemical apparatus includes a barrier, where the barrier is hermetically connected to an outer package, standalone chambers are formed at two sides of the barrier respectively, each chamber encapsulates an electrode assembly and an electrolyte, electrode assemblies in adjacent chambers are connected in series by tabs, and the barrier includes an ion insulating layer, water permeability of the barrier is less than or equal to 10−3 g/(day·m2·Pa)/3 mm, and sealing thickness T and sealing width W of a seal between the barrier and the outer package satisfy 0.01≤T/W≤0.05. Based on the electrochemical apparatus, not only high voltage output can be achieved and a temperature rise of the electrochemical apparatus can be reduced, but also water resistance and environmental stability of the electrochemical apparatus can be improved.