Abstract
The ternary system SiO2-P2O5-ZrO2 electrolyte and phosphotungstic acid (PWA) doped SiO2-P2O5-ZrO2 electrolyte were prepared for intermediate temperature fuel cell by using sol-gel technique. These silica-based proton conductors were confirmed to be non-crystalline structure without phase separation and good thermal stability by XRD and TG/DTA analysis. The doped PWA was found to be stabilized within the silica matrix and to enhance the proton conductivity. The proton conductivities of SiO2-P2O5-ZrO2 and SiO2-P2O5-ZrO2-PWA electrolytes showed 3.3×10−5 and 1.8×10−3 S/cm at 90 °C, respectively, and the cell performance of SiO2-P2O5-ZrO2-PWA electrolyte was obtained as 0.02–0.25 mA/cm2 at 300 °C under humid condition.
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References
G. Alberti and M. Casciola, Solid State Ionics, 145, 3 (2001).
B. Nakrupai, K. Pruksathom and P. Piumsomboon, Korean J. Chem. Eng., 23, 570 (2006).
T. Norby, Solid State Ionics, 125, 1 (1999).
S. M. Haile, Acta Materialia, 51, 5981 (2003).
J. Zhang, Z. Xie, J. Zhang and S. Holdcroft, Journal of Power Sources, 160, 872 (2006).
D. H. Seo, H. R. Kim, P. Shakkthivel and Y.G. Shul, Journal of the Korea Electrochemical Society, 11, 22 (2008).
J. S. Wainright, M. H. Litt and R. F. Savinell, Handbook of Fuel Cells, 3, 436 (2003).
Y. Abe, M. Hayashi, T. Iwamoto, H. Sumi and L. L. Hench, Journal of Non-Crystalline Solid, 351, 2138 (2005).
Y. Daiko, T. Akai, T. Kasuga and M. Nogami, Journal of the Ceramic Society of Japan, 109, 815 (2001).
M. Nogami, R. Nagao, W. Cong and Y. Abe, Journal of Sol-Gel Science and Technology, 13, 933 (1998).
M. Aparicio and L. C. Klein, Journal of Sol-Gel Science and Technology, 28, 199 (2003).
T. Uma and M. Nogami, Materials Chemistry and Physics, 98, 382 (2006).
Y. Castro, M. Aparicio, R. Moreno and A. Duran, Journal of Sol-Gel Science and Technology, 35, 41 (2005)
N. L. Garland and J. P. Kopasz, Journal of Power Sources, 172, 94 (2007).
U. Mioc, M. Davidovic, N. Tjapkin, Ph. Colomban and A. Novak, Solid State Ionics, 46, 103 (1991)
P. Staiti, S. Freni and S. Hocevar, Journal of Power Sources, 79, 250 (1999).
M. Aparicio, Y. Castro and A. Duran, Solid State Ionics, 176, 333 (2005).
I. Honma, Y. Takeda and J. M. Bae, Solid State Ionics, 120, 255 (1999).
T. Uma and M. Nogami, Journal of Membrane Science, 280, 744 (2006).
Y. Izumi, M. Ogawa and K. Urabe, Appl. Catal. A: General, 132, 127 (1995).
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Seo, D., Park, S. & Shul, YG. Preparation of silica-based proton conductors for intermediate temperature fuel cells. Korean J. Chem. Eng. 26, 1016–1021 (2009). https://doi.org/10.1007/s11814-009-0169-8
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DOI: https://doi.org/10.1007/s11814-009-0169-8