Electrochemical apparatus and electronic apparatus

An electronic apparatus, comprising an electrochemical apparatus;

• the electrochemical apparatus comprises a positive electrode and an electrolyte;
• wherein,
• the positive electrode comprises a positive electrode current collector and a positive electrode mixture layer disposed on a surface of the positive electrode current collector;
• the positive electrode current collector comprises a first region, a second region, and a third region;
• two surfaces of the first region are each provided with the positive electrode mixture layer, one surface of the second region is provided with the positive electrode mixture layer, and neither surface of the third region is provided with the positive electrode mixture layer;
• and an average width of the first region is a centimeters, an average width of the third region is b centimeters, and an elongation rate of the positive electrode current collector is x, wherein x=a/b−1;
• and
• the electrolyte comprises a lithium salt additive A;
• the lithium salt additive A is at least one selected from lithium tetrafluoroborate, lithium bis(oxalato)borate, lithium difluoro(oxalato)borate, lithium difluorophosphate, lithium difluoro bis(oxalato)phosphate, lithium bis(fluorosulfonyl)imide, or lithium bis(trifluoromethanesulfonyl)imide;
• and based on a mass of the electrolyte, a mass content of the lithium salt additive A is y %, and y is in the range of 0.1 to 3;
• wherein y≥x.