Environment-Modulated Crystallization of CuO and CuO Nanowires by Electrospinning and Their Charge Storage Properties.

This article reports the synthesis of cuprous oxide (CuO) and cupric oxide (CuO) nanowires by controlling the calcination environment of electrospun polymeric nanowires and their charge storage properties. The CuO nanowires showed higher surface area (86 m g) and pore size than the CuO nanowires (36 m g). Electrochemical analysis was carried out in 6 M KOH, and both the electrodes showed battery-type charge storage mechanism.

One-Dimensional Assembly of Conductive and Capacitive Metal Oxide Electrodes for High-Performance Asymmetric Supercapacitors.

A one-dimensional morphology comprising nanograins of two metal oxides, one with higher electrical conductivity (CuO) and the other with higher charge storability (CoO), is developed by electrospinning technique. The CuO-CoO nanocomposite nanowires thus formed show high specific capacitance, high rate capability, and high cycling stability compared to their single-component nanowire counterparts when used as a supercapacitor electrode. Practical symmetric (SSCs) and asymmetric (ASCs) supercapacitors are fabricated using commercial activated carbon, CuO, CoO, and CuO-CoO composite nanowires, and their properties are compared.