Facile construction of Co(OH)2@Ni(OH)2 core-shell nanosheets on nickel foam as three dimensional free-standing electrode for supercapacitors

In this work, we demonstrate a simple and highly controlled two-step electrodeposition method for construction of cobalt hydroxide @nickel hydroxide core-shell heterostructure that are directly grown on conductive substrates, which shows better electrochemical performance than its single component counterparts.341