Multi-layer battery electrode design for enabling thicker electrode fabrication

• Main Authors: HERLE, SUBRAMANYA P, WANG, ZHENG, WANG, FEI C, ORILALL, MAHENDRA C, WANG, CONNIE P, SIKHA, GODFREY, ZENG, DONG-LI
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Implementations of the present invention relate generally to high-capacity energy storage devices and methods and apparatus for fabricating high-capacity energy storage devices. In one implementation, a method for forming a multi-layer cathode structure is provided. The method comprises providing a conductive substrate, depositing a first slurry mixture comprising a cathodically active material to form a first cathode material layer over the conductive substrate, depositing a second slurry mixture comprising a cathodically active material to form a second cathode material layer over the first cathode material layer, and compressing the as-deposited first cathode material layer and the second cathode material layer to achieve a desired porosity.