Advances in Solid Oxide Fuel Cells VII: Ceramic Engineering by Narottam P. Bansal, Prabhakar Singh, Sujanto Widjaja, Dileep

By Narottam P. Bansal, Prabhakar Singh, Sujanto Widjaja, Dileep Singh

This e-book is a suite of papers from the yankee Ceramic Society's thirty fifth overseas convention on complicated Ceramics and Composites, held in Daytona seashore, Florida, January 23-28, 2011. This factor comprises papers awarded within the eighth overseas Symposium on strong Oxide gasoline Cells: fabrics, technology, and know-how on issues equivalent to cellphone and Stack improvement; Electrochemical/Mechanical/Thermal functionality; Electrodes; Interconnects; Novel Cell/Stack layout and Processing; and Reliability/Degradation.Content:

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Extra resources for Advances in Solid Oxide Fuel Cells VII: Ceramic Engineering and Science Proceedings, Volume 32

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25)-(29) one can obtain the gas capacity of fuel compartment : ' zF_ RT 1 X„_n 1_ 1 — Xj, ■PV = ^KA-xko)-Pr (46) The fuel conversion polarizatio n resistanc e has minimum and gas capacity has maximum at 50:50 water /hydrogen gas mixture as fuel. Therefore using highly moistured hydrogen the anode conversion impedance can be experimentall y eliminated . Table II Polarizatio n resistanc e and capacity values resulting from fuel conversion at 850 C. 5 13,45 5,55 2,93 1,05 2,70 6,55 12,41 34,48 in F Table II shows the values of gas capacitanc e and gas diffusion polarizatio n resistanc e of the anode as a function of X"H 0 at 850 C (we have used effective value of D mo~^T) 2/=8,4xl 0"4 m2/s with tortuosit y r factor of 0,25 for our estimation) .

The addition of BaO also leads to expansion of electrolyti c . In some area of co-doped systems. 30˛O _23 atm was found for Ceo^SmojsSroiBaaosJoiCh-s investigation s of Mori group [33] it was shown that co-doping with an alkali and an alkaline earth element s not only leads to the increase of electrica l conductivit y of solid electrolyte s based on CeCh, but also expands their electrolyti c areas. 20; Ln = La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Yb) was investigated . x-yBayM x)o202-5 (M=Cs , Sr) showed that the increase of the conductivit y is observed only with the addition of alkaline earth elements .

P. Gorelov, N. M . Bogdanovich, I. V. Korzun and V. A. 30), Rus. J. , 43. 663-66 (2007). 25 K . Huang, M . Feng and J. B. 9 5 ceramics,J. Am. Ceram. Soc, 81,357-62 (1998). -J. Kim, Lattice Parameters . Th4+. Am. Ceram. ,12,1415-21 (1989). 27 D. Andersspn. From the Electronic Structure of Point Defects to Functional Propertie s of Metals and Ceramics: Doctoral Thesis, Royal Institute of Technology (Sweden), Stockholm (2007). 28 X . Sha, Z. L , X . Huang, J. Miao, L. Jia, X . Xin and W. 9 electrolyt e material s for SOFC , J.

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