Abstract
In this study, a composite electrode of a supercapacitor was fabricated by coating tungsten oxide (WO3) onto mesocarbon microbeads with a high-specific surface area (2685 m2 g−1). Composite carbon was prepared through composite solution filtration and heat treatment. To determine the optimal processing parameters of the composite electrode, the effects of the temperature of the heat treatment and the concentration of carbon black (CB) on the capacitance properties of supercapacitors were investigated. The structural characteristics of composite carbon and electrodes were observed through composition analyses such as X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The capacitive performance of composite electrodes was evaluated using cyclic voltammetry (CV) in 1 M LiClO4 electrolytic solution. The results revealed that the optimal composite electrode can be obtained using 1 M H2O4W, a heat-treatment temperature of 100 °C, and an addition of 25 wt% CB. The specific capacitance of the composite electrode was 194.8 F g−1. The supercapacitor achieved an energy density and power density of 243.5 Wh kg−1 and 69.0 kW kg−1 (@0.15 A g−1), respectively. In addition, the supercapacitor exhibited an excellent charge/discharge efficiency of 97.8%.
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References
Achilleos DS, Hatton TA (2015) Surface design and engineering of hierarchical hybrid nanostructures for asymmetric supercapacitors with improved electrochemical performance. J Colloid Interface Sci 447:282–301
Beliakov AI, Brintsev AM (1999) Presented at the 9th international seminar on double layer capacitors and similar energy storage devices, Deerfield Beach Florida, Dec 6–8
Cai Y, Wang Y, Deng S, Chen G, Li Q, Han B, Han R, Wang Y (2014) Graphene nanosheets-tungsten oxides composite for supercapacitor electrode. Ceram Int 40:4109–4116
Chang KH, Hu CC, Huang CM, Liu YL, Chang CI (2011) Microwave-assisted hydrothermal synthesis of crystalline WO3–WO3·0.5H2O mixtures for pseudocapacitors of the asymmetric type. J Power Source 196:2387–2392
Chen YC, Wen CY, Wang CM, Ho CW, Lin SY, Chen YL (2016) Characterization of transition-metal oxide deposition on carbon electrodes of a supercapacitor. Appl Sci 6:1–8
Fritts DH (1997) An analysis of electrochemical capacitors. J Electrochem Soc 144:2233–2241
Hamann CH, Hamnett A, Vielstich W (1998) Electrochemistry. Wiley-Vch, Germany
Huang CC, Xing W, Zhuo SP (2009) Capacitive performances of amorphous tungsten oxide prepared by microwave irradiation. Scr Mater 61:985–987
Inagaki M, Konno H, Tanaike O (2010) Carbon materials for electrochemical capacitors. J Power Source 195:7880–7903
Jeong Y-U, Manthiram A (2001) Amorphous tungsten oxide/ruthenium oxide composites for electrochemical capacitors. J Electrochem Soc 148:A189–A193
Lin C, Ritter JA, Popov BN (1999) Development of carbon-metal oxide supercapacitors from Sol-Gel derived carbon-ruthenium xerogels. J Electrochem Soc 146:3155–3160
Ma Y, Tai CW, Gustafsson T, Edström K (2015a) Recycled poly(vinyl alcohol) sponge for carbon encapsulation of size-tunable tin dioxide nanocrystalline composites. Chemsuschem 8:2084–2092
Ma Y, Tai CW, Younesi R, Gustafsson T, Lee JY, Edström K (2015b) Iron doping in spinel NiMn2O4: stabilization of the mesoporous cubic phase and kinetics activation toward highly reversible Li+ storage. Chem Mater 27:7698–7709
Meng C, Liu C, Chen L, Hu C, Fan S (2010) Highly flexible and all-solid-state paperlike polymer supercapacitors. Nano Lett 10:4025–4031
Polaczyk AM, Ghimbeu CM, Guterl CV, Frackowiak E (2010) Carbon/λ-MnO2 composites for supercapacitor electrodes. J Solid State Chem 183:969–974
Srinivasan V, Weidner JW (1997) An electrochemical route for making porous nickel oxide electrochemical capacitors. J Electrochem Soc 144:L210–L213
Takasu Y, Mizutani S, Kumagai M, Sawaguchi S, Murakami Y (1999) Ti-V-W-O/Ti oxide electrodes as candidates for electrochemical capacitors. Electrochem Solid State Lett 2:1–2
Wang CM, Wen CY, Chen YC, Chang JY, Huang JZ, Hsu CC (2016) Preparation and properties of supercapacitor with composite electrodes, presented the 4th IIAE international conference on industrial application engineering, Beppu, Japan
Yu H, Wu J, Fan L, Xu K, Zhong X, Lin Y, Lin J (2011) Improvement of the performance for quasi-solid-state supercapacitor by using PVA–KOH–KI polymer gel electrolyte. Electrochem. Acta 56:6881–6886
Zhang XY, Han LQ, Sun S, Wang CY, Chen MM (2015) MnO2/C composite electrodes free of conductive enhancer for supercapacitors. J Alloys Compd 653:539–545
Zheng JP, Jow TR (1995) A new charge storage mechanism for electrochemical capacitors. J Electrochem Soc 142:L6–L8
Acknowledgements
This study was supported by the Ministry of Science and Technology of the Republic of China, Taiwan, under Contract Number MOST 104-2221-E-230-008. We acknowledge Wallace Academic Editing for editing this manuscript.
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Wen, CY., Chen, YC., Wang, CM. et al. Composite electrodes of WO3 coating on mesocarbon microbeads of a supercapacitor. Microsyst Technol 24, 4049–4055 (2018). https://doi.org/10.1007/s00542-017-3618-z
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DOI: https://doi.org/10.1007/s00542-017-3618-z