Abstract
Solid-state electrochemical double-layer capacitor (SEDLC) forms excellent energy storage device for high-power applications. They are highly reliable, with no electrolyte leaks, and can be packaged to suit various applications. The electrode material can be activated carbon to graphene. These can have a range of particle size, surface area, pore size and pore distribution for charge storage. The emphasis will be to optimize the graphene to carbon blend in the electrodes which would provide appreciable storage density of the SEDLC. We can use perfluorosulfonic acid polymer as the solid electrolyte in the SEDLC assembly. They have high ionic conductivity, good thermal stability, and mechanical strength. They also have excellent long-term chemical stability. Carbon is widely used for many practical applications, especially for the adsorption of ions and molecules, as it is possible to synthesize one-, two- or three-dimensional (1-, 2-, or 3-D) carbons. Some of the problems in activated carbon like varying micro or mesopores, poor ion mobility due to varying pore distribution, low electrical conductivity, can be overcome using graphene and blends of graphene with carbon of the right pore dimension and distribution. Graphene in various structural nomenclatures have been used by various groups for charge storage. Graphene nanoplates (GNP), with narrow mesopore distributions have been effectively used for SEDLCs. SEDLCs assembled with GNP and blends of GNP with Vulcan XC and solid polymer electrolyte like Nafion show exceptional performance. The cyclic voltammetric studies show that they support high scan rates with substantial smaller capacitance drop as we increase scan rates. Optimization of the electrode structure in terms of blend percentage, binder content and interface character in the frequency and time domain provides excellent insight into the double-layer interface.
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References
B.E. Conway, Electrochemical super capacitors: scientific fundamentals and technological applications (Kluwer Academic/Plenum Publishers, New York, 1999)
C.N.R. Rao, A.K. Sood, K.S. Subrahmanyam, A. Govindaraj, Graphene: the new two dimensional nanomaterial. Angew. Chem. Int. Ed. Engl. 48(42), 7752–7777 (2009)
C.S. Ramya, C.K. Subramaniam, K.S. Dhathathreyan, Perfluorosulfonic acid based electrochemical double-layer capacitor. J. Electrochem. Soc. 157(5), A600–A605 (2010). doi:10.1149/1.3328180
C.K. Subramaniam, C.S. Ramya, K. Ramya, Performance of EDLCs using Nafion and Nafion composites as electrolyte. J. Appl. Electrochem. 41, 197–206 (2011)
C.K. Subramaniam, Solid state EDLCs using various ionic polymers: a study. ECS Trans. 28(30), 179–195 (2010)
H. Gao, K. Liam, High rate all-solid electrochemical capacitors using proton conducting polymer electrolytes. J. Power Sources 196, 8855–8857 (2011)
P. Staiti, F. Lufrano, A study of the electrochemical behaviour of electrodes in operating solid-state supercapacitors. Electrochim. Acta 53, 710–719 (2007)
F. Lufrano, P. Staiti, Conductivity and capacitance properties of a supercapacitor based on Nafion electrolyte in a nonaqueous system. Electrochem. Solid-State Lett. 7(11), A447–A450 (2004)
D. Pech, M. Brunet, H. Duron, P. Hg, V. Mochalin, Y. Gogotsi, P. Taberna, P. Simon, Ultrahigh-power micrometre-sized super capacitors based on onion-like carbon. Nat. Nanotechnol. 5, 651–654 (2010)
J. Miller, R. Outlaw, B. Holloway, Graphene double-layer capacitor with ac line-filtering performance. Science 329, 1637–1639 (2010)
C.K. Subramaniam, K.K. Cheralathan, G. Velayutham, S. Bollepalli, Study of carbon based solid state EDLCs at high sweep rates. ECS Trans. 41(22), 37–49 (2012). doi:10.1149/1.3693062
M.J. Allen, V.C. Tung, R.B. Kaner, Honeycomb carbon: a review of graphene. Chem. Rev. (2009). doi:10.1021/cr900070d
S. Park, R.S. Ruoff, Chemical methods for production of graphene. Nat. Nanotechnol. 4, 217–224 (2009)
M.D. Stoller, S. Park, Y. Zhu, J. An, R.S. Ruoff, Graphene based ultra capacitor. Nano Lett. 8(10), 3498–3502 (2008)
Y.W. Zhu, S. Murali, M.D. Stoller, A. Velamakanni, R.D. Piner, R.S. Ruoff, Microwave assisted exfoliation and reduction of graphite oxide for ultracapacitors. Carbon 48, 2118–2122 (2010)
S. Yoon, J. Lee, T. Hyeon, S.M. Oh, Electric double-layer capacitor performance of a new mesoporous carbon. J. Electrochem. Soc. 147, 2507–2512 (2000)
J. Xia, F. Chen, J. Li, N. Tao, Measurement of the quantum capacitance of graphene. Nat. Nanotechnol. 4, 505–509 (2009)
J. Yan, T. Wei, B. Shao, Z. Fan, W. Qian, M. Zhang, Preparation of a graphene nanosheet/polyaniline composite with high specific capacitance. Carbon 48, 487–493 (2010)
C.K. Subramaniam, T. Maiyalagan, P. Sangeetha, A.M. Prasad, G. Velayutham, Sri BollepalliIn, International Conference on Nano Science and Technology ICONSAT2012 (Hyderabad, India, 2012)
C.K. Subramaniam, T. Maiyalagan, Double layer energy storage in graphene—a study. Micro Nanosyst. 4, 180–185 (2012)
A. Braun, M. B¨artsch, B. Schnyder, R. K¨otz, O. Haas, A. Wokaun, Evolution of BET internal surface area in glassy carbon powder during thermal oxidation. Carbon 40, 375 (2002)
J.J. Lopez-Garcia, J. Horno, F. Gonzalez-Caballero, C. Grosse, A.V. Delgadoy, Dynamics of the electric double layer: analysis in the frequency and time domains. J. Colloid Interface Sci. 228, 95–104 (2000)
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Subramaniam, C.K., Boopalan, G. Study of storage capacity in various carbon/graphene-based solid-state supercapacitors. Appl. Phys. A 116, 887–891 (2014). https://doi.org/10.1007/s00339-014-8421-4
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DOI: https://doi.org/10.1007/s00339-014-8421-4