Polyethylene glycol diacid and jeffamine nanocomposites for high-energy supercapacitor with photoluminescence properties

Abstract

Polymer dots improve ion transport and supercapacitor properties due to active functional groups on their surface. In this study, a new nanocomposite of polymer dot based on polyether amine D-230) Jeffamine (-nickel oxide (PDJA-NiO) was synthesized by a one-step method (quantum yield of 82.2 %). Also, a novel nanocomposite of polymer dot based on polyethylene glycol diacid and Jeffamine-nickel oxide (PDPJA-NiO) was synthesized in the same method and conditions to study the effect of polymers in improving the supercapacitor properties, (quantum yield of 78.84 %). The PDJA-NiO electrode and the PDPJA-NiO electrode were prepared, and the electrochemical analyses were performed. The new PDPJA-NiO specific capacitance and the new PDJA-NiO specific capacitance were obtained at about 527 F g−1 and 355 F g−1 at 1 A g−1. Also, two symmetric devices were made from the PDPJA-NiO nanocomposite (PDPJA-NiO/AC//AC/PDPJA-NiO) and the PDJA-NiO nanocomposite (PDJA-NiO/AC//AC/PDJA-NiO), that showed a specific capacitance of 123 F g−1 and 100 F g−1 at 1 A g−1, respectively. The PDPJA-NiO/AC//AC/PDPJA-NiO and the PDJA-NiO/AC//AC/PDJA-NiO supercapacitors exhibited maximum energy densities of 37.26 Wh kg−1 and 31.01 Wh kg−1. The illumination of white LED by both nanocomposites confirms the practical application of both nanocomposites.