Layered double hydroxide (LDH) has been regarded as one of ideal electrode for supercapacitors due to layered structure, multiple redox active centers, and synergistic effects between metal ions. However, low capacitance and poor cycling stability greatly limit their large-scale application. Herein, nickel-aluminum layered double hydroxide (NiAl-LDH) onto nickel foam has been prepared by a simple one-step hydrothermal method, with the charge storage capability controlled by using different reactant concentration. It is found that the reactant concentration can regulate the morphology, crystall...
