Abstract
Using Ba0.95Ce0.9Y0.1O3-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 Ba0.95Ce0.9Y0.1O3-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
Ba0.95Ce0.9Y0.1O3-α, Solid oxide fuel cell, Proton conductor
Publication Date
2002-08-28
Online Available Date
2002-08-28
Revised Date
2002-01-21
Received Date
2001-12-16
Recommended Citation
Gui-lin MA, Ding-xian JIA, Li-gan QIU, Hui SHI, Rong CHEN.
Ionic Conduction in Ba0.95Ce0.9Y0.1O3-αSolid Oxide and its Performance in Fuel Cell[J]. Journal of Electrochemistry,
2002
,
8(3): 321-326.
DOI: 10.61558/2993-074X.3300
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol8/iss3/15
Included in
Catalysis and Reaction Engineering Commons, Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
