POSITIVE PLATE, ELECTROCHEMICAL DEVICE COMPRISING SAME AND APPARATUS THEREOF

Positive plate, electrochemical device including same, and apparatus thereof are disclosed. The positive plate includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm. A material of the conductive layer is aluminum or aluminum alloy, and a density of the conductive layer is 2.5 g/cm-2.8 g/cm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent, and the binder has an uneven distribution in a thickness direction of the electrode active material layer.