High Volumetric Energy Density Annealed-MXene-Nickel Oxide/MXene Asymmetric Supercapacitor

13 Pages·2017·1.43 MB·English

Electronic Supplementary Material (ESI) for RSC Advances.
This journal is © The Royal Society of Chemistry 2017
High Volumetric Energy Density Annealed-MXene-Nickel Oxide/MXene
Asymmetric Supercapacitor
Qi Xun Xia a, Jianjian Fu a, Je Moon Yun*, b, Rajaram S. Mane b, and Kwang Ho Kim*,a, b
aSchool of Materials Science and Engineering, Pusan National University, San 30 Jangjeon-
dong, Geumjeong-gu, Busan 609-735, Republic of Korea
bGlobal Frontier R&D Center for Hybrid Interface Materials, Pusan National University, San 30
Jangjeon-dong, Geumjeong-gu, Busan 609-735, Republic of Korea
*Email: * [email protected] (K. H. Kim, Prof.)
* [email protected] (J. M. Yun, Dr.)
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Figure S1. SEM images of the (a) as-obtained before HF treatment Ti AlC MAX phase, and (b)
3 2
after HF treatment Ti C T MXene.
3 2 x
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Figure S2. (a) SEM images of the Ti C T MXene with corresponding selected-area EDX
3 2 x
spectrum (c), and (e) corresponding elements content. (b) SEM images of the Ni-dMXNC with
corresponding selected-area EDX spectrum (d), and (f) corresponding elements content.
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Figure S3. High-resolution XPS spectra (a) Ti 2p, (c) C 1s, (d) Ni 2p, (e) O 1s, and (f) F 1s
spectra of Ti C T MXene.
3 2 x
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Figure S4. (a) Low magnification TEM image, (b) HRTEM image and (c) corresponding SAED
pattern of the NiO nanosheets.
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Figure S5. Pore structure of Ti C T MXene and Ni-dMXNC (a) Nitrogen adsorption-desorption
3 2 x
isotherms and (b) the BHJ pore-size distribution of the Ti C T MXene; (c) Nitrogen adsorption-
3 2 x
desorption isotherms and (d) the BHJ pore-size distribution of the Ni-dMXNC.
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Figure S6. CV curves of the Ti C T MXene electrodes in different potential range at scan rate
3 2 x
of 10 mV s-1.
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Figure S7. Cycling performance of the NiO electrode at a current density of 5 A g-1.
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Figure S8. Galvanostatic charge-discharge curves of the asymmetric cell and the in situ tracked
variation of the potential in each individual electrode.
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Table S1. Resistivity of the Ti C T MXene and Ni-dMXNC materials.
3 2 x
Sample Resistivity (Ω/□) Resistivity (Ω m)
Ti C T 1.54E+4 6.76E+2
3 2 x
Ni-dMXNC 4.71E+3 3.30E+2
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