Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors

Authors

Jiang Zhou, Nanyang Technological University
Ying Huang, Nanyang Technological University
Xiehong Cao, Nanyang Technological University
Bo Ouyang, Nanyang Technological University
Wenping Sun, Nanyang Technological UniversityFollow
Chaoliang Tan, Nanyang Technological University
Yu Zhang, Nanyang Technological UniversityFollow
Qinglang Ma, Nanyang Technological University
Shuquan Liang, Central South University
QingYu Yan, Nanyang Technological University
Hua Zhang, Nanyang Technological UniversityFollow

RIS ID

105876

Publication Details

Zhou, J., Huang, Y., Cao, X., Ouyang, B., Sun, W., Tan, C., Zhang, Y., Ma, Q., Liang, S., Yan, Q. & Zhang, H. (2015). Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors. Nanoscale, 7 (16), 7035-7039.

Abstract

We report the synthesis of two-dimensional (2D) NiCo2O4 nanosheet-coated three-dimensional graphene network (3DGN), which is then used as an electrode for high-rate, long-cycle-life supercapacitors. Using the 3DGN and nanoporous nanosheets, an ultrahigh specific capacitance (2173 F g^-1 at 6 A g^-1), excellent rate capability (954 F g^-1 at 200 A g^-1) and superior long-term cycling performance (94% capacitance retention after 14000 cycles at 100 A g^-1) are achieved.