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Received March 6, 2013
Accepted May 14, 2013
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Electrochemical performance of Ni/TiO2 hollow sphere in proton exchange membrane water electrolyzers system
Department of Applied Chemistry, Birla Institute of Technology, Deoghar Extension Campus, Jasidih - 814 142, Jharkhand, India
Korean Journal of Chemical Engineering, August 2013, 30(8), 1571-1577(7), 10.1007/s11814-013-0085-9
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Abstract
This work presents the electrocatalytic evaluation of Ni/TiO2 hollow sphere materials in PEM water electrolysis cell. All the electrocatalysts have shown remarkably enhanced electrocatalytic properties in comparison with their performance in aqueous electrolysis cell. According to cyclic voltammetric results, 0.36 A cm^(-2) peak current density has been exhibited in hydrogen evolution reaction (HER) from 30 wt% Ni/TiO2 electrocatalyst. 15 wt% Ni-doped titania sample has shown the best result in oxygen evolution reaction (OER) with the anodic peak current density of 0.3 Acm^(-2). In the anodic polarization curves, the performance of 15 wt% Ni/TiO2 hollow sphere electrocatalyst was evaluated up to 140 mA cm^(-2) at comparatively lower over-potential value. 20 wt% Ni/TiO2 hollow sphere electrocatalyst has also shown electrochemical stability in PEM water electrolyzer for 48 h long analysis. The comparative electrocatalytic behavior of hollow spherical materials with non-sphericals is also presented, which clearly shows the influence of hollow spherical structure in greater electrocatalytic activity of the materials. The physical characterization of all the hollow spherical materials is presented in this work, which has confirmed their better electrochemical behavior in PEM water electrolyzer.
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Siracusano S, Baglio V, Di Blasi A, Briguglio N, Stassi A, Ornelas R, Int. J. Hydrog. Energy., 35, 5558 (2010)
Zhang Y, Yue L, Teng K, Yuan S, Hongchao M, J. New Mat. Electrochem. Syst., 15, 271 (2012)
Trasatti S, Electrochim. Acta., 29, 1503 (1984)
Zhu YZ, Chen HB, Wang YP, Li ZH, Cao YL, Chi YB, Chem. Lett., 35(7), 756 (2006)
Fujiwara M, Shiokawa MK, Hayashi K, Morigaki K, Nakahara Y, J. Biomed. Mater. Res. A., 8, 103 (2007)
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Chattopadhyay J, Kim HR, Moon SB, Pak D, Int. J. Hydrog.Energy., 33, 3270 (2008)
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Chattopadhyay J, Srivastava R, Srivastava PK, J. Appl. Electrochem., 43(3), 279 (2013)
Shiho H, Kawahashi N, J. Colloid Interface Sci., 226(1), 91 (2000)
Kawahashi N, Shiho H, J. Matter. Chem., 10, 2294 (2000)
Yoon SB, Kim JY, Kim JH, Park SG, Kim JY, Lee CW, Yu JS, Curr. Appl. Phys., 6, 1059 (2000)
Ticianelli EA, Derouin CR, Redondo A, Srinivasan S, J.Electrochem. Soc., 135, 2209 (1988)
Niklasson GA, Granqvist CG, J. Mater. Sci., 17, 127 (2007)
Lide DR, CRC handbook of chemistry and physics, 73rd Ed., CRC Press, Boca Raton, USA (2000)
Lunkenheimer P, Loidl A, Ottermann CR, Bange K, Phys.Rev. B., 44, 5927 (1991)
Marshall A, Borresen B, Hagen G, Tsypkin M, Tunold R, Electrochim. Acta, 51(15), 3161 (2006)
