Mesoporous Co3O4 monolayer hollow-sphere array as electrochemical pseudocapacitor material

Abstract
A Co3O4 monolayer hollow-sphere array with mesoporous walls exhibits high pseudocapacitances of 358 F g−1 at 2 A g−1 and 305 F g−1 at 40 A g−1, as well as excellent cycling stability for application as pseudocapacitors.