Journal of Industrial and Engineering Chemistry, Vol.17, No.4, 717-722, July, 2011
Capacitive deionization using a carbon electrode prepared with water-soluble poly(vinyl alcohol) binder
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To increase the wettability of carbon electrodes, we have fabricated a carbon electrode using a poly(vinyl alcohol) (PVA) binder (a water-soluble polymer) by cross-linking PVA with glutaric acid (GA). The PVAbonded carbon electrodes were prepared at various cross-linking temperatures and GA contents, and their electrochemical properties were analyzed using cyclic voltammetry (CV) and impedance spectroscopy. All carbon electrodes prepared in this study maintained their integrity within boiling water, which demonstrated the chemical stability of PVA cross-linking with GA. CV and impedance spectroscopy showed that the cross-linking temperature can significantly affect the resistance of PVAbonded carbon electrodes by influencing the degree of cross-linking. The electric resistance increased with decreasing cross-linking temperature, which was attributed to the swelling of PVA that was permitted by inadequate cross-linking of PVA with GA at low temperatures. As the mole ratio of GA to PVA increased from 5 to 20 mol/mol, specific capacitance increased also; this behavior appeared to result from the unreacted GA, which carried a negative charge. The desalting performance of the carbon
electrodes prepared in this study indicates that they are suitable for capacitive deionization applications.
Keywords:Capacitive deionization;Water-soluble polymer;Wettability;Specific capacitance;Cross-linking
- Lee JB, Park KK, Yoon SW, Park PY, Park KI, Lee CW, Desalination, 237(1-3), 155 (2009)
- Gabelich CJ, Tran TD, Suffet IHM, Environ. Sci. Technol., 36, 3010 (2002)
- Oren Y, Desalination, 228(1-3), 10 (2008)
- Welgemoed TJ, Schutte CF, Desalination, 183(1-3), 327 (2005)
- Li L, Zou L, Song H, Morris G, Carbon., 47, 775 (2009)
- Xu P, Drewes JE, Heil D, Wang G, Water Res., 42, 2605 (2008)
- Park KK, Lee JB, Park PY, Yoon SW, Moon JS, Eum HM, Lee CW, Desalination, 206(1-3), 86 (2007)
- Park BH, Choi JH, Electrochim. Acta, 55(8), 2888 (2010)
- Lim JA, Park NS, Park JS, Choi JH, Desalination, 238(1-3), 37 (2009)
- Farmer JC, Fix DV, Mack GV, Pekala RW, Poco JF, J. Electrochem. Soc., 143(1), 159 (1996)
- Ying TY, Yang KL, Yiacoumi S, Tsouris C, J. Colloid Interface Sci., 250(1), 18 (2002)
- Yang KL, Ying TY, Yiacoumi S, Tsouris C, Vittoratos ES, Langmuir, 17(6), 1961 (2001)
- Ryoo MW, Seo G, Water Res., 37, 1527 (2003)
- Jung HH, Hwang SW, Hyun SH, Kang-Ho L, Kim GT, Desalination, 216(1-3), 377 (2007)
- Kinoshita K, Carbon: Electrochemical and Physicochemical Properties, John Wiley Sons, New York (1988)
- Choi JY, Choi JH, J. Ind. Eng. Chem., 16(3), 401 (2010)
- Han YH, Quan X, Chen S, Wang SB, Zhang YB, Electrochim. Acta, 52(9), 3075 (2007)
- Zou L, Li L, Song H, Morris G, Water Res., 42, 2340 (2008)
- Momma T, Liu X, Osaka T, Ushio Y, Sawada Y, J. Power Sources., 60, 249 (1996)
- Zhang LZ, Wang YY, Wang CL, Xiang H, J. Membr. Sci., 308(1-2), 198 (2008)
- Rhim JW, Park HB, Lee CS, Jun JH, Kim DS, Lee YM, J. Membr. Sci., 238(1-2), 143 (2004)
- Lee JH, Bae WS, Choi JH, Desalination, 258(1-3), 159 (2010)
- Kim YJ, Choi JH, Water Res., 44, 990 (2010)
- Hsieh CT, Teng H, Carbon., 40, 667 (2002)
- Pro¨ bstle H, Wiener M, Fricke J, J. Porous Mater., 10, 213 (2003)
- Probstle H, Schmitt C, Fricke J, J. Power Sources, 105(2), 189 (2002)
- Gileadi E, Electrode Kinetics for Chemists, Chemical Engineers and Materials Scientists, Wiley-VCH, NY (1993)
- Yang KL, Yiacoumi S, Tsouris C, J. Electroanal. Chem., 540, 159 (2003)
- Biesheuvel PM, van der Wal A, J. Membr. Sci., 346(2), 256 (2010)
- Kim YJ, Choi JH, Sep. Purif. Technol., 71(1), 70 (2010)