Micro-patterning of LiMn2O4 Electrode Using Sol–Gel Process for Lithium Micro-batteries

Abstract

Abstract Micro-dot array of LiMn2O4 on Au substrate was prepared by sol–gel process combined with a micro-injection technology. The size of a dot of LiMn2O4 was 50 μm, and dot population density on the substrate was 5000 dots cm−2. Electrochemical properties of micro-dots of LiMn2O4 in a PMMA-gel electrolyte were characterized as cathode for lithium micro-batteries. A micro-dot of LiMn2O4 exhibited a discharge capacity of 1.8 μC dot−1, and the capacity fade was only 21% over 200 charge–discharge cycles.