Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-doped Graphene Foam with enhanced charge-storage performance

Robert A.W. Dryfe; Yuqin Zou; Ian A. Kinloch

doi:10.1021/acsami.5b05095

Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-doped Graphene Foam with enhanced charge-storage performance

Robert A.W. Dryfe, Yuqin Zou, Ian A. Kinloch

Research output: Contribution to journal › Article › peer-review

Abstract

A hierarchical electrode structure, consisting of cobalt oxide and nitrogen-doped graphene foam (NGF), has been fabricated with the aim of achieving enhanced charge-storage performance. Characterization of the material via electron microscopy and Raman spectroscopy demonstrates that the Co3O4 nanosheets grow vertically on NGF and the nanosheets are mesoporous with pore diameters between 3 and 8 nm. The Co3O4/NGF electrode shows an enhanced charge-storage performance, attributed to the 3D hierarchical structure and the synergistic effect of Co3O4 and NGF. The present study shows that specific capacitances as high as 451 F g(-1) can be obtained, indicating that high-performance electrochemical capacitors can be made using electrode materials with advanced structures. The present electrode design can be readily extended to other electroactive materials and their composites.

Original language	English
Pages (from-to)	22831-22838
Number of pages	7
Journal	A C S Applied Materials and Interfaces
Volume	7
Issue number	41
DOIs	https://doi.org/10.1021/acsami.5b05095
Publication status	Published - 21 Oct 2015

Keywords

charge storage; cobalt oxide; enhanced capacitive performance; hollow 3D structure; nitrogen-doped graphene foam

Access to Document

10.1021/acsami.5b05095

Cite this

@article{0b62583a4b0a48fd88aa3cf6796bd2b1,

title = "Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-doped Graphene Foam with enhanced charge-storage performance",

abstract = "A hierarchical electrode structure, consisting of cobalt oxide and nitrogen-doped graphene foam (NGF), has been fabricated with the aim of achieving enhanced charge-storage performance. Characterization of the material via electron microscopy and Raman spectroscopy demonstrates that the Co3O4 nanosheets grow vertically on NGF and the nanosheets are mesoporous with pore diameters between 3 and 8 nm. The Co3O4/NGF electrode shows an enhanced charge-storage performance, attributed to the 3D hierarchical structure and the synergistic effect of Co3O4 and NGF. The present study shows that specific capacitances as high as 451 F g(-1) can be obtained, indicating that high-performance electrochemical capacitors can be made using electrode materials with advanced structures. The present electrode design can be readily extended to other electroactive materials and their composites.",

keywords = "charge storage; cobalt oxide; enhanced capacitive performance; hollow 3D structure; nitrogen-doped graphene foam",

author = "Dryfe, {Robert A.W.} and Yuqin Zou and Kinloch, {Ian A.}",

year = "2015",

month = oct,

day = "21",

doi = "10.1021/acsami.5b05095",

language = "English",

volume = "7",

pages = "22831--22838",

journal = "A C S Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "41",

}

TY - JOUR

T1 - Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-doped Graphene Foam with enhanced charge-storage performance

AU - Dryfe, Robert A.W.

AU - Zou, Yuqin

AU - Kinloch, Ian A.

PY - 2015/10/21

Y1 - 2015/10/21

N2 - A hierarchical electrode structure, consisting of cobalt oxide and nitrogen-doped graphene foam (NGF), has been fabricated with the aim of achieving enhanced charge-storage performance. Characterization of the material via electron microscopy and Raman spectroscopy demonstrates that the Co3O4 nanosheets grow vertically on NGF and the nanosheets are mesoporous with pore diameters between 3 and 8 nm. The Co3O4/NGF electrode shows an enhanced charge-storage performance, attributed to the 3D hierarchical structure and the synergistic effect of Co3O4 and NGF. The present study shows that specific capacitances as high as 451 F g(-1) can be obtained, indicating that high-performance electrochemical capacitors can be made using electrode materials with advanced structures. The present electrode design can be readily extended to other electroactive materials and their composites.

AB - A hierarchical electrode structure, consisting of cobalt oxide and nitrogen-doped graphene foam (NGF), has been fabricated with the aim of achieving enhanced charge-storage performance. Characterization of the material via electron microscopy and Raman spectroscopy demonstrates that the Co3O4 nanosheets grow vertically on NGF and the nanosheets are mesoporous with pore diameters between 3 and 8 nm. The Co3O4/NGF electrode shows an enhanced charge-storage performance, attributed to the 3D hierarchical structure and the synergistic effect of Co3O4 and NGF. The present study shows that specific capacitances as high as 451 F g(-1) can be obtained, indicating that high-performance electrochemical capacitors can be made using electrode materials with advanced structures. The present electrode design can be readily extended to other electroactive materials and their composites.

KW - charge storage; cobalt oxide; enhanced capacitive performance; hollow 3D structure; nitrogen-doped graphene foam

U2 - 10.1021/acsami.5b05095

DO - 10.1021/acsami.5b05095

M3 - Article

SN - 1944-8244

VL - 7

SP - 22831

EP - 22838

JO - A C S Applied Materials and Interfaces

JF - A C S Applied Materials and Interfaces

IS - 41

ER -

Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-doped Graphene Foam with enhanced charge-storage performance

Abstract

Keywords

Access to Document

Fingerprint

Cite this