J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (8): 1691-1699.DOI: 10.1016/j.jmst.2019.04.003
• Orginal Article • Previous Articles Next Articles
Lu Liu1, Xi Hu1, Hong-Yan Zeng*(), Mo-Yu Yi, Shi-Gen Shen, Sheng Xu, Xi Cao, Jin-Ze Du
Received:
2018-12-14
Revised:
2019-02-13
Accepted:
2019-03-15
Online:
2019-08-05
Published:
2019-06-19
Contact:
Zeng Hong-Yan
About author:
1The authors contributed equally to this work.
Lu Liu, Xi Hu, Hong-Yan Zeng, Mo-Yu Yi, Shi-Gen Shen, Sheng Xu, Xi Cao, Jin-Ze Du. Preparation of NiCoFe-hydroxide/polyaniline composite for enhanced-performance supercapacitors[J]. J. Mater. Sci. Technol., 2019, 35(8): 1691-1699.
Fig. 7. Nyquist plots of LDH2.5, LDH2.0, LDH1.5, LDH1.0 and LDH0.5 (Z′: real part of impedance; Z′′: imaginary part of impedance; R: solution resistance; W: warburg impedance; Cdl: double-layer capacitance).
Fig. 9. XRD patterns (a), SEM image (b), EDS spectra (c), BET-BJH patterns (d), FT-IR spectra (e) and UV-vis DRS spectra (f) of PANI and LDH/PANI, as well as the TEM image of LDH/PANI (the inset in Fig. 9(b)).
Fig. 10. Electrochemical performances of PANI and LDH/PANI: (a) CV curves of PANI and LDH/PANI at 100 mV s-1 on the 12th cycle; (b) GCD curves as well as Nyquist plot (inset) of PANI and LDH/PANI; (c, d) cycling performances and GCD curves (inset) at the last 20 cycles for LDH2.0 and LDH/PANI after1000 cycles at 2.0 A g-1, respectively.
Electrode material | Specific capacitance (F g-1) | Cycle retention | Reference |
---|---|---|---|
VO2@PANI | 246 (0.5 A g-1) | 28.6% (1000 cycles, 1 A g-1) | [ |
Mg/Fe-LDH | 147 (3 A g-1) | 92.12 % (1000 cycles, 3 A g-1) | [ |
Ni(OH)2/rGOa | 768 (2 A g-1) | 90% (2000 cycles, 0.5 A g-1) | [ |
Co3O4/C | 284.2 (1 A g-1) | 90.17% (2000 cycles, 1 A g-1) | [ |
CT/NCS-tubea | 724.7 (1 A g-1) | 89.65% (5000 cycles, 5 A g-1) | [ |
GO/PANIa | 596 (0.5 A g-1) | 83.7% (1500 cycles, 2 A g-1) | [ |
NiFe2O4/PANI | 448 (1 mA cm-2) | 80% (1000 cycles, 10 mA cm-2) | [ |
MoO3/PANI | 613 (2 A g-1) | 76.7% (3000 cycles, 2 A g-1) | [ |
CoAl-LDH/PEDOTa | 672 (1 A g-1) | 92.5% (5000 cycles, 10 A g-1) | [ |
LDH/PANI | 717 (2 A g-1) | 84.7% (1000 cycles, 2 A g-1) | This work |
NiCoFe-LDH | 409 (2 A g-1) | 90.9% (1000 cycles, 2 A g-1) | This work |
Table 1 Electrochemical performance of different electroactive materials containing PANI for supercapacitors.
Electrode material | Specific capacitance (F g-1) | Cycle retention | Reference |
---|---|---|---|
VO2@PANI | 246 (0.5 A g-1) | 28.6% (1000 cycles, 1 A g-1) | [ |
Mg/Fe-LDH | 147 (3 A g-1) | 92.12 % (1000 cycles, 3 A g-1) | [ |
Ni(OH)2/rGOa | 768 (2 A g-1) | 90% (2000 cycles, 0.5 A g-1) | [ |
Co3O4/C | 284.2 (1 A g-1) | 90.17% (2000 cycles, 1 A g-1) | [ |
CT/NCS-tubea | 724.7 (1 A g-1) | 89.65% (5000 cycles, 5 A g-1) | [ |
GO/PANIa | 596 (0.5 A g-1) | 83.7% (1500 cycles, 2 A g-1) | [ |
NiFe2O4/PANI | 448 (1 mA cm-2) | 80% (1000 cycles, 10 mA cm-2) | [ |
MoO3/PANI | 613 (2 A g-1) | 76.7% (3000 cycles, 2 A g-1) | [ |
CoAl-LDH/PEDOTa | 672 (1 A g-1) | 92.5% (5000 cycles, 10 A g-1) | [ |
LDH/PANI | 717 (2 A g-1) | 84.7% (1000 cycles, 2 A g-1) | This work |
NiCoFe-LDH | 409 (2 A g-1) | 90.9% (1000 cycles, 2 A g-1) | This work |
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