FABRICATION OF FeCo LAYERED DOUBLE HYDROXIDE (LDH) FOR HIGH-PERFORMANCE ENERGY STORAGE

Abstract

The development of high-performance electrode materials is essential for next-generation energy-storage technologies. In this work, FeCo layered double hydroxide (FeCo-LDH) was successfully synthesized using a simple co-precipitation method. Structural characterizations by XRD and FT-IR confirmed the formation of a well-defined LDH phase with characteristic basal reflections, metal–oxygen vibrations, and interlayer hydroxyl groups. SEM analysis revealed a loosely stacked nanosheet morphology that provides abundant electroactive surface sites, while EDX confirmed the uniform distribution of Fe and Co without detectable impurities. Electrochemical measurements demonstrated the outstanding pseudocapacitive performance of FeCo-LDH. The material exhibited pronounced redox activity in CV, distinct potential plateaus in GCD, and low charge-transfer resistance in EIS. A high specific capacitance of 1409 F·g⁻¹ at 10 A·g⁻¹ was achieved, indicating excellent rate capability and efficient ion diffusion. These results confirm that FeCo-LDH is a promising electrode material for high-performance supercapacitors and other advanced energy-storage applications.