The triblock copolymer F108-template precursor solution of NiO was prepared by mixing NiCl2 (1 g), copolymer F108 (1 g), Milli-Q water (3 g), and ethanol (6 g) according to the literature
The triblockcopolymer F108-template precursor solution of NiO wasprepared by mixing NiCl2 (1 g), copolymer F108 (1 g),Milli-Q water (3 g), and ethanol (6 g) according to theliterature