Abstract
Electrochemical capacitors are deemed to be the most prospective energy storage devices in the field of alternative energy sources. Here, cadmium hydroxide (Cd(OH)2) nanosheets are hydrothermally synthesized and used as electrodes for supercapacitors. Physiochemical properties of the as-synthesized materials are examined using powder x-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy and energy-dispersive x-ray spectroscopy measurements. Electrochemical investigations reveal an excellent operating potential window of 1.5 V, with the specific capacitance of ∼ 71 F g−1 at a scan rate of 2 mV s−1. In addition, the Cd(OH)2 electrodes are complemented by good cyclic retention for 2000 cycles. Further, the analysis of the type of charge-storage mechanism reveals prominent contributions from the diffusion-controlled processes.
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