NiAl-Cl LDH in-situ grown on graphene oxide by a one-step hydrothermal method towards high performance cathode of supercapacitor

Abstract To meet the demands of modern vehicles and electronic devices, an increasing number new materials for cathode high-performance supercapacitors have been studied in depth. Here, GO/NA-Cl composites were successfully fabricated by in-situ grow NiAl layered double hydroxide (NiAl LDH) nanosheets on graphene oxide (GO) flakes through one-step hydrothermal procedure supercapacitor. The image scanning electron microscopy (SEM) exhibited that NiAl-Cl LDH evenly vertically arranged GO interlaced to form a network structure, presenting considerable surface area, which afford abundant active sites contact with electrolyte alleviate expansion during process electrochemical reaction improve its stability. results test show is typical pseudocapacitive material, provides prominent specific capacity 1573 F/g at 1 A/g, superior rate property (the retention 62% even 20 A/g). Furthermore, electrode shows cycling life after 1000 cycles A/g about 80% capacitance retention.