Sequential-etching assisted construction of Co3O4 N-doped carbon@CoNix . . . We have developed a sequential-etching strategy to construct novel Co 3 O 4 NC@CoNi x (x = 1, 1 5, 2) composites featuring yolk-shell structure consisted of dual loss sites both in the yolk and shell for high-efficiency microwave absorption
Sequential-etching assisted construction of Co3O4 N-doped carbon@CoNix . . . To this end, we have successfully prepared novel yolk-shell Co 3 O 4 N-doped carbon (NC)@CoNi x (x = 1, 1 5, 2) composites by controlled sequential etching of ZIF-67 templates followed by direct nitridation It was found that the sequential etching process could not only adjust the Co Ni ratio of the shell layer in the yolk-shell structure