ERA

Download the full-sized PDF of Promoting Influence of Doping Indium into BaCe0.5Zr0.3Y0.2O3- δ on the Chemical Stability, Sinterability and Electrical PropertiesDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R39W0969C

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Graduate Studies and Research, Faculty of

Collections

This file is in the following collections:

Theses and Dissertations

Promoting Influence of Doping Indium into BaCe0.5Zr0.3Y0.2O3- δ on the Chemical Stability, Sinterability and Electrical Properties Open Access

Descriptions

Other title
Subject/Keyword
proton
solid oxide fuel cell
electrolyte
indium
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Wang, Guangya
Supervisor and department
Luo, Jingli (Chemical and Materials Engineering)
Examining committee member and department
Chung, Hyun-Joong (Chemical and Materials Engineering)
Cadien, Ken (Chemical and Materials Engineering)
Elliott, Janet A. W. (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2014-09-10T11:28:00Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
The application of BaCe1-x-yZrxYyO3-δ series solid proton conductors in SOFCs is restricted by the trade-off among the chemical stability, sinterability and electrical conductivity under SOFCs operating conditions. The present research attempted to enhance the chemical stability, sinterability and ensure the high electrical conductivity of BaCe1-x-yZrxYyO3-δ by doping indium. BaCe0.5-xZr0.3InxY0.2O3-δ (where x = 0, 0.05, 0.1, and 0.2) powders were synthesized by a combustion method. The influence of the indium dopant on chemical stability, sinterability, and electrical properties of the sintered samples was investigated. Phase purity and chemical stability were evaluated by XRD. SEM images and a shrinkage plot showed that the sinterability of the samples was improved by the indium doping. The electrical conductivity was measured with an impedance test through a two-point method at both low (200–350 °C) and high (450–850 °C) temperature ranges in different atmospheres. BaCe0.4Zr0.3In0.1Y0.2O3-δ showed the highest electrical conductivity (1.1×10-2 S.cm-1) in wet hydrogen at 700 °C. An anode support fuel cell was fabricated by a spin coating method. A maximum power density of 651 mW/cm2 was obtained when operating at 700 °C and fed by humid H2 and the cell ran stably for more than 100 hours.
Language
English
DOI
doi:10.7939/R39W0969C
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication

File Details

Date Uploaded
Date Modified
2015-01-08T08:02:35.329+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (PDF/A)
Mime type: application/pdf
File size: 4459577
Last modified: 2015:10:12 17:25:37-06:00
Filename: Wang_Guangya_201409_MSc.pdf
Original checksum: f3faa93dbb2b44a4a7e90619345a48db
Activity of users you follow
User Activity Date