Post on 07-Mar-2018
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Electronic Supplementary Information (ESI)
Electrospun α-Fe2O3 Nanostructures for Supercapacitor
Applications
G. Binitha,a M. S. Soumya,
a Asha Anish Madhavan,
a P. Praveen,
a A. Balakrishnan,
a K. R. V.
Subramanian,a
M. V.Reddy,b Shantikumar V. Nair,
a A. Sreekumaran Nair,
a,* and N.
Sivakumara,*
aNanosolar Division, Amrita Centre for Nanoscience and Molecular Medicine, Ponekkara,
Kochi, India.
Email: nsivakumar@amrita.edu.sg (N. Sivakumar); sreekumarannair@aims.amrita.edu (A.
Sreekumaran Nair)
Fax: +91-484-2802020; Tel: +91-484-2802020
bDepartment of Physics, National University of Singapore, Singapore 117542.
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013
2
ESI 1
EDX spectra of α-Fe2O3 PF.
0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00
keV
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Counts
OK
aF
eL
lF
eL
a
FeK
esc
FeK
a
FeK
b
Au
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013
3
ESI 2
EDX spectra of α-Fe2O3 NG.
A
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013
4
ESI 3
XPS spectrum (wide) of the -Fe2O3 PFs (black) and NGs (red) nanostructures showing the
elemental composition. The spectrum also indicates the presence of a small amount of
adventitious C1s feature.
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013
5
ESI 4
CV curves of PF electrode at different cycle number (a). CV curves of NG electrode at
different cycle number (b).
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013
6
ESI 5
A comparison of the CV traces of PF, NG and the Ni substrate at a scan rate of 100 mV/s. It
is obvious from the traces that the electrochemical activity of the substrate is negligible in
comparison to that of the metal oxides.
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry AThis journal is © The Royal Society of Chemistry 2013