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| Paper IPM / CMNL / 14912 |
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The controlled growth of metal oxide nanostructures within hierarchically porous conductive carbon-based frameworks is critically important to achieving high volumetric performance and appropriate channel size for energy storage applications. Herein, we grow cobalt oxide (Co3O4) nanoflakes, using a sequential-electrodeposition process, into spherically porous sponge-like few-layer partially reduced graphene oxide (SrGO) synthesized by template-directed ordered assembly. Maximum specific/volumetric capacitances of 1112 F gCo3O4^-1 (at 3.3 A gCo3O4^-1), 178 F cm^-3 (at 2.6 A cm^-2), and 406 F gtotal^-1 (at 1 A gtotal^-1) and sensible rate capability (80
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