Electrode having bilayer structure and method for manufacturing the same
Abstract:
Provided is an electrode for a secondary battery having an electrode current collector either surface or both surfaces of which are coated with two active material layers, the electrode including: an electrode current collector; a first layer of active material coated on the current collector; and a second layer of active material coated on the first layer of active material, wherein a plurality of craters are formed in the first layer of active material and the craters are filled with active material of the second layer. A method for manufacturing the electrode for a secondary battery is also provided, and the method includes carrying out laser ablation on the first layer of active material. According to the present disclosure, it is possible to solve the problem of detachment of the active material layers, particularly the second layer of active material, during the process for manufacturing the electrode.
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