Electrochemical apparatus and electronic apparatus

An electronic apparatus, comprising an electrochemical apparatus, wherein the electrochemical apparatus comprises a positive electrode plate, a negative electrode plate, a separator, and an electrolyte;

• wherein the separator is disposed between the positive electrode plate and the negative electrode plate, the separator comprises a porous substrate, and the porous substrate comprises a first polyethylene resin material and a second polyethylene resin material;
• wherein a melting enthalpy of the first polyethylene resin material is 110 J/g to 160 J/g, and a melting enthalpy of the second polyethylene resin material is 170 J/g to 205 J/g;
• based on a mass of the porous substrate, a mass percentage of the first polyethylene resin material is 10% to 40%, and a mass percentage of the second polyethylene resin material is 45% to 88%;
• and a shutdown rate of the separator is 10 kΩ/min to 80 kΩ/min.