Journal article

Probing electrochemical charge storage of 3D porous hierarchical cobalt oxide decorated rGO in ultra-high-performance supercapacitor

Sarika Jadhav, Ramchandra S Kalubarme, Norihiro Suzuki, Chiaki Terashima, Bharat Kale, Suresh W Gosavi, Muthupandian Ashokkumar, Akira Fujishima



A 3D porous hierarchical Co3O4-reduced graphene oxide nanosheet (Co3O4-rGO) heterostructure is synthesized by a facile hydrothermal method. Microstructure analysis confirms the decoration of Co3O4 hierarchical structures with an urchin-like spherical microstructure on rGO nanosheet with an average size of about 50 nm. The structural analysis reveals the formation of phase pure spinel Co3O4 and reduced graphene showing their simultaneous existence in the composite. Raman spectroscopy confirms the successful reduction of graphite oxide to reduced graphene oxide and the effectual interaction between Co3O4 and rGO matrix. The Co3O4-rGO composite electrode possesses utmost specific capacitance 68..

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University of Melbourne Researchers


Awarded by University Grants Commission (UGC)

Awarded by University Grants Commission (UGC), New Delhi

Funding Acknowledgements

SMJ acknowledges the University Grants Commission (UGC) for granting a fellowship through the Novel material science UPE-Phase II (UPE/262A (3)) project. RSK acknowledges University Grants Commission (UGC), New Delhi for granting D.S. Kothari Post-doctoral fellowship (F.4-2/2006(BSR)/PH/14-15/0132). The authors also acknowledged Japan Science and Technology Agency (JST) for granting SAKURA Exchange Program in Science.