NOVELTY - Manufacturing an electrode comprises applying, one after another, active material slurries in layers onto the surface of the current collector (11), where each active material slurry contains a binder and a different active material to form active material layers on the surface of the current collector; and then simultaneously drying all the active material slurries.    USE - For manufacturing an electrode, e.g. positive electrode, for use in a battery (claimed), e.g. lithium-ion battery and polymer battery.    ADVANTAGE - The method improves the tolerance of the battery to overcharging while preventing degradation of battery performance in normal charge-discharge operations, which is due to an increase in internal resistance of the electrode. The method also prevents issues including misalignment between active material layers, degradation in cohesion between active materials, and increase in manufacturing costs. When the active material slurry for the second layer is applied, the active material slurry for the first layer has not yet undergone the drying step. When applying the active material slurry for the second layer, a component in the slurry, particularly the binder agent, does not permeate or diffuse into the active material slurry for the first layer easily so the concentration of the binder in the active material slurry for the first layer is prevented from increasing. As a result, the internal resistance of the electrode is prevented from increasing and the battery performance is prevented from degrading in normal charge-discharge operations.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a battery comprising a positive electrode, a negative electrode and a separator interposed between the electrodes, where at least one of the electrode comprises a current collector and active material layers formed on a surface of the current collector; and    (2) an electrode-manufacturing apparatus comprising conveyor for conveying a current collector; active material applying ports provided near a conveyance passage of the current collector for applying different active material slurries one after another in layers onto the current collector; discharge timing-adjusting mechanism for adjusting timing with which the active material slurries are discharged from the active material applying ports; drying mechanism disposed downstream from the active material applying ports in the transfer passage of the current collector for drying the active material slurries having been layered; and controller for controlling the conveyor and the discharge timing-adjusting mechanism.    DESCRIPTION OF DRAWING(S) - The figure shows a multilayer simultaneous die coating apparatus.    Conveying roller (10)    Current collector (11)    First transfer passage (13)    First collection passage (14)    First coating passage (15)    Second transfer passage (16)    Second collection passage (17)    Second coating passage (18)    First switching valve (19)    Second switching valve (20)    Second application port (21)