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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 87Preparation of Protonic Conductor...

Preparation of Protonic Conductor BaZr_0.5Ce_0.3Ln_0.2O_3-δ (Ln=Y, Sm, Gd, Dy) by Using a Solid State Reactive Sintering Method

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Abstract:

Protonic conductors of BaZr_0.5Ce_0.3Ln_0.2O_3-δ (BZCLn532, Ln=Y, Sm, Gd, Dy) were successfully synthesized by using a cost-effective solid state reactive sintering (SSRS) method with 1 wt.% NiO was added as a sintering aid. The pellets of the BZCLn532 were obtained at sintering temperatures between 1300 - 1600 °C. The results show that the morphologies and the final relative densities of the obtained BZCLn532 pellets are influenced significantly when different sintering temperatures were applied. Densified pellets of the BZCLn532 can be prepared at sintering temperatures of 1600 °C (BaZr_0.5Ce_0.3Y_0.2O_3-δ) and 1400 °C (BaZr_0.5Ce_0.3Sm_0.2O_3-δ, BaZr_0.5Ce_0.3Gd_0.2O_3-δ and BaZr_0.5Ce_0.3Dy_0.2O_3-δ,). The conductivity results show that the BaZr_0.5Ce_0.3Y_0.2O_3-δ (BZCY532) and BaZr_0.5Ce_0.3Dy_0.2O_3-δ (BZCD532) ceramics are demonstrated to be good candidates of oxygen ion conductor and proton conductor materials for intermediate temperature solid oxide fuel cells (IT-SOFCs) applications.

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Advances in Science and Technology (Volume 87)

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1-5

DOI:

https://doi.org/10.4028/www.scientific.net/AST.87.1

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Online since:

October 2014

Authors:

Jun Fu Bu*, Pär G. Jönsson, Zhe Zhao

Keywords:

Barium Cerate, Barium Zirconate, Protonic Conductor, Solid Oxide Fuel Cell, Solid State Reactive Sintering

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