An electrode member, comprising a current collector, an active material layer, an adapting sheet, and an electrode lead; wherein the current collector comprises an insulating substrate, a first conductive layer, and a second conductive layer, and the first conductive layer and the second conductive layer are respectively disposed on two surfaces of the insulating substrate; the first conductive layer and the second conductive layer each comprise a coated region and an uncoated region, the coated region is coated with an active material layer, and the uncoated region is not coated with an active material layer, a size of the current collector in a length direction is larger than that in a width direction, and the uncoated region is located on a side of the coated region in a length direction; the adapting sheet comprises a first conductive member and a second conductive member, the first conductive member and the second conductive member are respectively connected to the uncoated region of the first conductive layer and the uncoated region of the second conductive layer, and the first conductive member is connected to the second conductive member; and the electrode lead is connected to the adapting sheet, and one end of the electrode lead in the width direction is beyond the uncoated region; wherein a thickness of the electrode lead is greater than a thickness of the first conductive member; wherein the adapting sheet further comprises a connecting portion, and the connecting portion is connected between the first conductive member and the second conductive member; the connecting portion is configured to be bent around an end portion of the uncoated region in the length direction, or the connecting portion is configured to be bent around an end portion of the uncoated region in the width direction; and the electrode lead is fixed to the connecting portion by means of welding; wherein the electrode lead is welded to the connecting portion to form a fourth welding zone, and the first conductive member is welded to the first conductive layer to form a third welding zone, or the first conductive member is welded to the first conductive layer to form a third welding zone, and the electrode lead is welded to the connecting portion to form a fourth welding zone. wherein the current collector comprises an insulating substrate, a first conductive layer, and a second conductive layer, and the first conductive layer and the second conductive layer are respectively disposed on two surfaces of the insulating substrate; the first conductive layer and the second conductive layer each comprise a coated region and an uncoated region, the coated region is coated with an active material layer, and the uncoated region is not coated with an active material layer, a size of the current collector in a length direction is larger than that in a width direction, and the uncoated region is located on a side of the coated region in a length direction; the adapting sheet comprises a first conductive member and a second conductive member, the first conductive member and the second conductive member are respectively connected to the uncoated region of the first conductive layer and the uncoated region of the second conductive layer, and the first conductive member is connected to the second conductive member; and the electrode lead is connected to the adapting sheet, and one end of the electrode lead in the width direction is beyond the uncoated region; wherein a thickness of the electrode lead is greater than a thickness of the first conductive member; wherein the adapting sheet further comprises a connecting portion, and the connecting portion is connected between the first conductive member and the second conductive member; the connecting portion is configured to be bent around an end portion of the uncoated region in the length direction, or the connecting portion is configured to be bent around an end portion of the uncoated region in the width direction; and the electrode lead is fixed to the connecting portion by means of welding; wherein the electrode lead is welded to the connecting portion to form a fourth welding zone, and the first conductive member is welded to the first conductive layer to form a third welding zone, or the first conductive member is welded to the first conductive layer to form a third welding zone, and the electrode lead is welded to the connecting portion to form a fourth welding zone.