Ionic Conduction in Ba_(0.95)Ce_(0.9)Y_(0.1)O_(3-α)Solid Oxide and its Performance in Fuel Cell

Authors

Gui-lin MA, Department of Chemistry and Chemical Engineering,Faculty of Science,Suzhou University, Suzhou 215006,China;
Ding-xian JIA, Department of Chemistry and Chemical Engineering,Faculty of Science,Suzhou University, Suzhou 215006,China;
Li-gan QIU, Department of Chemistry and Chemical Engineering,Faculty of Science,Suzhou University, Suzhou 215006,China;
Hui SHI, Suzhou Health School,Suzhou 215002,China
Rong CHEN, Department of Chemistry and Chemical Engineering,Faculty of Science,Suzhou University, Suzhou 215006,China;

Corresponding Author

Gui_lin MA

Abstract

Using Ba 0.95 Ce 0.9 Y 0.1 O 3-α as a solid electrolyte and porous platinum as electrodes,hydrogen and oxygen concentration cells and hydrogen_air fuel cell were constructed,respectively.Electromotive forces(MEFs)of the gas concentration cells and I_V characteristics of the fuel cell were detdrmined in the temperature range of 600～1 000 ℃.The Ba 0.95 Ce 0.9 Y 0.1 O 3-α exhibited almost the pure protonic conduction under hydrogen gas,and a mixed conduction of oxide_ion and electron hole with oxide_ion transport number of 0.3～0.5 under oxygen gas.It exhibited a mixed conduction of proton and oxide_ion with the total ion transport number above 0.9 under the fuel cell condition.The fuel cell showed satisfactory performances.The polarizations at both electrodes were very small.The maximum of short_circuit current density and power_output density drawn from the cell were about 680 mA·cm -2 and 160 mW·cm -2 at 1000 ℃,respectively.

Keywords

Ba 0.95 Ce 0.9 Y 0.1 O 3-α, Solid oxide fuel cell, Proton conductor

DOI Link

https://doi.org/10.61558/2993-074X.3300

Publication Date

2002-08-28

Online Available Date

2002-08-28

Revised Date

2002-08-28

Received Date

2002-08-28

Recommended Citation

Gui-lin MA, Ding-xian JIA, Li-gan QIU, Hui SHI, Rong CHEN. Ionic Conduction in Ba_(0.95)Ce_(0.9)Y_(0.1)O_(3-α)Solid Oxide and its Performance in Fuel Cell[J]. Journal of Electrochemistry, 2002 , 8(3): Article 15.
DOI: 10.61558/2993-074X.3300
Available at: https://jelectrochem.xmu.edu.cn/journal/vol8/iss3/15

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