Journal
CHEMICAL COMMUNICATIONS
Volume 54, Issue 87, Pages 12400-12403Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc04625e
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The partial replacement of Co by Cu in cobaltite to give Cu0.27Co2.73O4 with unique flower-like morphology is found to be very beneficial for supercapacitor-battery hybrid applications. The 3D architecture of the material on a conductive substrate resulted in outstanding supercapattery performance. Asymmetric assembly of the material with activated carbon in a two-electrode system delivered high energy and power densities as well as a high specific capacity. The device also showed excellent cycling stability over 20000 cycles, with a capacity retention value of 86.9%.
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