Progress in material science has unearthed a number of options that offer great advantages for nanostructured electrode materials which enable supercapacitors to operate efficiently. Present work involves fabrication of symmetric and asymmetric type supercapacitor devices utilizing Mn-CuO nanostructures and activated carbon (AC) as electrode materials and subsequent investigation on their supercapacitive performance in 2M KOH aqueous electrolyte. The asymmetric supercapacitor device (Mn-CuO // 2M KOH// AC) demonstrate a specific capacitance of 72 Fg-1 at a current density of 0.5 Ag-1. The cyclic stability test of this device performed at a current density of 10 Ag-1 reveals a capacitance retention of 71% of its initial value over 300 charge-discharge cycles. In addition, this device exhibits an energy density of 7.4 Whkg-1 and a power density of 127 Wkg-1.
The intent of this study is to establish the performance of Caryota Urens leaves extract (CUL) as a corrosion inhibitor on mild steel in citric acid and hydrochloric acid medium by weight loss method of corrosion monitoring. The inhibition efficiency was tested by varying the inhibitor concentration and time of immersion in 1M citric acid and 1M Hydrochloric acid, pH of the bath was also monitored. The results proved the adsorption of the inhibitor on mild steel surface and 2.5% V/V of CUL offered90% and 92% inhibition efficiency for 24 hour immersion at room temperature in Citric acid and Hydrochloric acid respectively. Hence CUL extracts can be used as green inhibitors in citric acid and hydrochloric acid pickling baths for mild steel corrosion mitigation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.