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Facile synthesis of flower-like morphology Cu₀.₂₇Co₂.₇₃O₄ for a high-performance supercapattery with extraordinary cycling stability

Author:
Raj, Shipra, Kar, Pradip, Roy, Poulomi
Source:
Chemical communications 2018 v.54 no.87 pp. 12400-12403
ISSN:
1364-548X
Subject:
activated carbon, chemical reactions, cobalt, copper, energy
Abstract:
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 20 000 cycles, with a capacity retention value of 86.9%.
Agid:
6192345