Skip to main content
placeholder image

3D mesoporous hybrid NiCo2O4@graphene nanoarchitectures as electrode materials for supercapacitors with enhanced performances

Journal Article


Abstract


  • 3D mesoporous hybrid NiCo2O4@graphene nanoarchitectures were successfully synthesized by a combination of freeze drying and hydrothermal reaction. Field-emission scanning electron microscopy (FESEM) and TEM analyses revealed that the NiCo2O 4@graphene nanostructures consist of a hierarchical mesoporous sheet-on-sheet nanoarchitecture with a high specific surface area of 194 m 2 g-1. Ultrathin NiCo2O4 nanosheets, with a thickness of a few nanometers and mesopores ranging from 2 to 5 nm, were wrapped in graphene nanosheets and hybrid nanoarchitectures were formed. When applied as electrode materials in supercapacitors, the hybrid NiCo 2O4@graphene nanosheets exhibited a high capacitance of 778 F g-1 at a current density of 1 A g-1, and an excellent cycling performance extending to 10000 cycles at a high current density of 10 A g-1. This journal is © the Partner Organisations 2014.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2014

Citation


  • Wei, Y., Chen, S., Su, D., Sun, B., Zhu, J., & Wang, G. (2014). 3D mesoporous hybrid NiCo2O4@graphene nanoarchitectures as electrode materials for supercapacitors with enhanced performances. Journal of Materials Chemistry A, 2(21), 8103-8109. doi:10.1039/c3ta15423h

Scopus Eid


  • 2-s2.0-84899891993

Start Page


  • 8103

End Page


  • 8109

Volume


  • 2

Issue


  • 21

Abstract


  • 3D mesoporous hybrid NiCo2O4@graphene nanoarchitectures were successfully synthesized by a combination of freeze drying and hydrothermal reaction. Field-emission scanning electron microscopy (FESEM) and TEM analyses revealed that the NiCo2O 4@graphene nanostructures consist of a hierarchical mesoporous sheet-on-sheet nanoarchitecture with a high specific surface area of 194 m 2 g-1. Ultrathin NiCo2O4 nanosheets, with a thickness of a few nanometers and mesopores ranging from 2 to 5 nm, were wrapped in graphene nanosheets and hybrid nanoarchitectures were formed. When applied as electrode materials in supercapacitors, the hybrid NiCo 2O4@graphene nanosheets exhibited a high capacitance of 778 F g-1 at a current density of 1 A g-1, and an excellent cycling performance extending to 10000 cycles at a high current density of 10 A g-1. This journal is © the Partner Organisations 2014.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2014

Citation


  • Wei, Y., Chen, S., Su, D., Sun, B., Zhu, J., & Wang, G. (2014). 3D mesoporous hybrid NiCo2O4@graphene nanoarchitectures as electrode materials for supercapacitors with enhanced performances. Journal of Materials Chemistry A, 2(21), 8103-8109. doi:10.1039/c3ta15423h

Scopus Eid


  • 2-s2.0-84899891993

Start Page


  • 8103

End Page


  • 8109

Volume


  • 2

Issue


  • 21