| abstract |
The present application relates to electrochemical devices and electronic devices including the same. The electrochemical device comprises a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, and an electrolyte; wherein the positive electrode comprises a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector, The positive electrode active material layer includes a positive electrode active material, and the positive electrode active material includes an element A selected from at least one of Al, B, Ca, Mg, Ti, Cu, Nb, Si, Zr, Y, or W. One, wherein the electrolyte comprises at least one of 1,3-propane sultone or derivatives thereof, wherein the mass ratio of the element A in the positive electrode active material to the compound of the formula (I) From 1:0.2 to 1:50. The electrochemical device described in the present application can exhibit excellent electrochemical performance, especially reducing gas production and improving the cycle stability of the electrochemical device. |