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Korean Carbon Society (한국탄소학회)
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Preparation and application of reduced graphene oxide as the conductive material for capacitive deionization

  • Nugrahenny, Ayu Tyas Utami (Advanced Energy Technology, University of Science and Technology) ;
  • Kim, Jiyoung (Advanced Energy Technology, University of Science and Technology) ;
  • Kim, Sang-Kyung (Advanced Energy Technology, University of Science and Technology) ;
  • Peck, Dong-Hyun (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Yoon, Seong-Ho (Institute for Materials Chemistry and Engineering, Kyushu University) ;
  • Jung, Doo-Hwan (Advanced Energy Technology, University of Science and Technology)
  • Received : 2013.11.08
  • Accepted : 2013.12.07
  • Published : 2014.01.31
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Abstract

This paper reports the effect of adding reduced graphene oxide (RGO) as a conductive material to the composition of an electrode for capacitive deionization (CDI), a process to remove salt from water using ionic adsorption and desorption driven by external applied voltage. RGO can be synthesized in an inexpensive way by the reduction and exfoliation of GO, and removing the oxygen-containing groups and recovering a conjugated structure. GO powder can be obtained from the modification of Hummers method and reduced into RGO using a thermal method. The physical and electrochemical characteristics of RGO material were evaluated and its desalination performance was tested with a CDI unit cell with a potentiostat and conductivity meter, by varying the applied voltage and feed rate of the salt solution. The performance of RGO was compared to graphite as a conductive material in a CDI electrode. The result showed RGO can increase the capacitance, reduce the equivalent series resistance, and improve the electrosorption capacity of CDI electrode.

Keywords

References

  1. Welgemoed TJ, Schutte CF. Capacitive Deionization $Technology^{TM}$: an alternative desalination solution. Desalination, 183, 327 (2005). http://dx.doi.org/10.1016/j.desal.2005.02.054.
  2. Zou L, Morris G, Qi D. Using activated carbon electrode in electrosorptive deionisation of brackish water. Desalination, 225, 329 (2008). http://dx.doi.org/10.1016/j.desal.2007.07.014.
  3. Oren Y. Capacitive deionization (CDI) for desalination and water treatment--past, present and future (a review). Desalination, 228, 10 (2008). http://dx.doi.org/10.1016/j.desal.2007.08.005.
  4. Farmer JC, Fix DV, Mack GV, Pekala RW, Poco JF. Capacitive deionization of NaCl and NaNO3 solutions with carbon aerogel electrodes. J Electrochem Soc, 143, 159 (1996). http://dx.doi.org/10.1149/1.1836402.
  5. Hou CH, Huang CY. A comparative study of electrosorption selectivity of ions by activated carbon electrodes in capacitive deionization. Desalination, 314, 124 (2013). http://dx.doi.org/10.1016/j.desal.2012.12.029.
  6. Oh HJ, Lee JH, Ahn HJ, Jeong Y, Kim YJ, Chi CS. Nanoporous activated carbon cloth for capacitive deionization of aqueous solution. Thin Solid Films, 515, 220 (2006). http://dx.doi.org/10.1016/j.tsf.2005.12.146.
  7. Yang J, Zou L, Choudhury NR. Ion-selective carbon nanotube electrodes in capacitive deionisation. Electrochim Acta, 91, 11 (2013). http://dx.doi.org/10.1016/j.electacta.2012.12.089.
  8. Zhan Y, Nie C, Li H, Pan L, Sun Z. Enhancement of electrosorption capacity of activated carbon fibers by grafting with carbon nanofibers. Electrochim Acta, 56, 3164 (2011). http://dx.doi.org/10.1016/j.electacta.2011.01.059.
  9. Kurzweil P. Electrochemical double-layer capacitors: Carbon material. In: Batteries and supercapacitors, Elsevier, 821 (2009).
  10. Qu D, Shi H. Studies of activated carbons used in double-layer capacitors. J Power Sources, 74, 99 (1998). http://dx.doi.org/10.1016/s0378-7753(98)00038-x.
  11. Frackowiak E, Beguin F. Carbon materials for the electrochemical storage of energy in capacitors. Carbon, 39, 937 (2001). http://dx.doi.org/10.1016/s0008-6223(00)00183-4.
  12. Nadakatti S, Tendulkar M, Kadam M. Use of mesoporous conductive carbon black to enhance performance of activated carbon electrodes in capacitive deionization technology. Desalination, 268, 182 (2011). http://dx.doi.org/10.1016/j.desal.2010.10.020.
  13. Li H, Zou L, Pan L, Sun Z. Novel graphene-like electrodes for capacitive deionization. Environ Sci Technol, 44, 8692 (2010). http://dx.doi.org/10.1021/es101888j.
  14. Park KK, Lee JB, Park PY, Yoon SW, Moon JS, Eum HM, Lee CW. Development of a carbon sheet electrode for electrosorption desalination. Desalination, 206, 86 (2007). http://dx.doi.org/10.1016/j.desal.2006.04.051.
  15. Hummers WS, Jr., Offeman RE. Preparation of graphitic oxide. J Am Chem Soc, 80, 1339 (1958). http://dx.doi.org/10.1021/ja01539a017.
  16. Pei S, Cheng HM. The reduction of graphene oxide. Carbon, 50, 3210 (2012). http://dx.doi.org/10.1016/j.carbon.2011.11.010.
  17. Shin HJ, Kim KK, Benayad A, Yoon SM, Park HK, Jung IS, Jin MH, Jeong HK, Kim JM, Choi JY, Lee YH. Efficient reduction of graphite oxide by sodium borohydride and its effect on electrical conductance. Adv Funct Mater, 19, 1987 (2009). http://dx.doi.org/10.1002/adfm.200900167.
  18. Li H, Pan L, Nie C, Liu Y, Sun Z. Reduced graphene oxide and activated carbon composites for capacitive deionization. J Mater Chem, 22, 15556 (2012). http://dx.doi.org/10.1039/c2jm32207b.
  19. Choi JY, Choi JH. A carbon electrode fabricated using a poly(vinylidene fluoride) binder controlled the Faradaic reaction of carbon powder. J Ind Eng Chem, 16, 401 (2010). http://dx.doi.org/10.1016/j.jiec.2009.08.005.
  20. Tashima D, Yoshitama H, Otsubo M, Maeno S, Nagasawa Y. Evaluation of electric double layer capacitor using Ketjenblack as conductive nanofiller. Electrochim Acta, 56, 8941 (2011). http://dx.doi.org/10.1016/j.electacta.2011.07.124.
  21. Kotz R, Hahn M, Gallay R. Temperature behavior and impedance fundamentals of supercapacitors. J Power Sources, 154, 550 (2006). http://dx.doi.org/10.1016/j.jpowsour.2005.10.048.

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