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
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
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
