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In this paper, hierarchical mesoporous Co3O4@ZnCo2O4 hybrid nanowire arrays (NWAs) on Ni foam were prepared through a two-step hydrothermal process associated with successive annealing treatment. The Co3O4@ZnCo2O4 hybrid NWAs exhibited excellent electrochemical performances with a high specific capacity of 1240.5 C g−1 at a current density of 2 mA cm−2, with rate capability of 59.0% shifting from...
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