Cathode for all-solid secondary battery, all-solid secondary battery including cathode, and method of preparing all-solid secodary battery
AssigneeSamsung SDI Co., Ltd.
InventorsWonsung Choi, Dongil Kang, Mokwon Kim, Seungsik Hwang
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Abstract
A cathode for an all-solid secondary battery, an all-solid secondary battery including the cathode, and a method of preparing an all-solid secondary battery. The cathode includes a cathode current collector and a cathode active material layer containing a solid electrolyte, on the cathode current collector, where the cathode current collector includes a first surface adjacent to the cathode active material layer, and a second surface opposing the first surface, and the second surface of the cathode current collector has a highest surface roughness value of 1.5 micrometers or more.
Claims20
A cathode for an all-solid secondary battery, comprising:
- a cathode current collector;
- and
- a cathode active material layer comprising a solid electrolyte, on the cathode current collector,
- wherein the cathode current collector comprises:
- a first surface adjacent to the cathode active material layer;
- and a second surface opposing the first surface, and
- a highest surface roughness value Ry2 of the second surface of the cathode current collector is 1.5 micrometers or more.
A method of preparing an all-solid secondary battery, the method comprising:
- applying a first pressurization to a cathode and a solid electrolyte layer together with a first pressurization auxiliary layer, to prepare a cathode-solid electrolyte layer laminate;
- and
- applying a second pressurization to the cathode-solid electrolyte layer laminate and an anode-solid electrolyte layer laminate together with a second pressurization auxiliary layer, to prepare the all-solid secondary battery.
Dependencies are inferred from the claim text.