2015
DOI: 10.1007/s10854-015-3582-2
|View full text |Cite
|
Sign up to set email alerts
|

Cobalt oxide (Co3O4)/graphene nanosheets (GNS) composite prepared by novel route for supercapacitor application

Abstract: Cobalt oxide (Co 3 O 4 )-graphene nanosheets (GNS) composite was prepared using a novel route. Room temperature prepared graphite oxide was exfoliated at low temperature and subsequently reduced to GNS by chemical method. Successful compound formation was confirmed and structural details were obtained from XRD studies. Cobalt oxide was found to crystallize in spinel fcc structure with average crystallite size of 9 nm in the composite. FTIR and XPS study confirms the removal of oxygen containing functional grou… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

1
18
0
1

Year Published

2015
2015
2023
2023

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 54 publications
(20 citation statements)
references
References 46 publications
(46 reference statements)
1
18
0
1
Order By: Relevance
“…The high resolution O 1s spectrum (Figure f) can be fitted into three peaks at 526.8, 529.4, and 530.9 eV. The main peak centered at 529.4 eV is attributed to metal–oxygen bonds for the Co 3 O 4 phase, with a shoulder at 530.9 eV belonging to oxygen ions in low coordination states at the surface, which is in agreement with the reported literature . The peak appearing at 526.8 eV corresponds to hydroxyl CO groups on the edge of cyclobenzene .…”
Section: Resultssupporting
confidence: 88%
“…The high resolution O 1s spectrum (Figure f) can be fitted into three peaks at 526.8, 529.4, and 530.9 eV. The main peak centered at 529.4 eV is attributed to metal–oxygen bonds for the Co 3 O 4 phase, with a shoulder at 530.9 eV belonging to oxygen ions in low coordination states at the surface, which is in agreement with the reported literature . The peak appearing at 526.8 eV corresponds to hydroxyl CO groups on the edge of cyclobenzene .…”
Section: Resultssupporting
confidence: 88%
“…As a distinct comparison, the Co 3 O 4 /NF electrode exhibits specific capacitances of 520.0, 513.7, 485.8, 456.8, 444.5, and 435.5 F g −1 at the corresponding current densities. Moreover, compared to other previously reported Co 3 O 4 /rGO composites with different Co 3 O 4 microstructures [ 7 , 16 , 30 ], the Co 3 O 4 /rGO/NF electrode reported here also delivers superior specific capacitances especially at higher current densities. Here, it is worth noting that the specific capacitance decreases as the charge/discharge current density increases for both Co 3 O 4 /rGO/NF and Co 3 O 4 /NF.…”
Section: Resultsmentioning
confidence: 46%
“…Geng et al [ 6 ] prepared porous Co 3 O 4 nanoplates with a specific capacitance of ~231 F g −1 at a current density of 1 A g −1 using a facile reflux method. Naveen et al [ 7 ] synthesized Co 3 O 4 /graphene nanosheets by a chemical method and a high specific capacitance of ~650 F g −1 at a scan rate of 5 mV s −1 . However, there still remain some challenges in the practical applications of Co 3 O 4 as a high capacity electrode such as poor conductivity and cycling stability, and relatively lower experimental specific capacitances than the theoretical value.…”
Section: Introductionmentioning
confidence: 99%
“…The charge curve was consisting of two segments. A linear variation with time (0.01–0.33 V) parallel to the vertical axis shows the typical characteristic of electric double layer capacitance and a sloped variation with time (0.33–0.55 V) is due to the redox process [3638] of (Co, Mn) 3 O 4 . It can be identified from the charge/discharge profiles that the major type of charge storage behaviors in as synthesized electrode materials were based on Faraday reactions which were in good consistence with the CV studies.…”
Section: Resultsmentioning
confidence: 99%