Mesoscopic architectures of Co(OH)2 spheres with an extended array of microporous threads as pseudocapacitor electrode materials

摘要: Abstract The present study demonstrates a low temperature hydrothermal route for the synthesis of α-cobalt hydroxide comprising randomly arrayed nano strands in three dimensional plane. These micro/nano hybrid structures were used as building blocks processing high surface area supercapacitor electrodes. Surface these was measured to be ∼100 m2 g−1. influence morphology different electrolytes namely lithium hydroxide, sodium and potassium analyzed. on capacitance internal resistance also determined explained basis redox reactions electrolytes. Capacitance values 1024 F g−1 attained when employed thin film electrodes with life extending more than 5000 cycles. Inductively coupled plasma-atomic emission spectroscopy determine electrode dissolution given electrolyte observations co-related cycling stability. Low self-discharge, rate capability along cost makes them promising systems applications.