Babilo, Peter and Uda, Tetsuya and Haile, Sossina M. (2007) Processing of yttrium-doped barium zirconate for high proton conductivity. Journal of Materials Research, 22 (5). pp. 1322-1330. ISSN 0884-2914. https://resolver.caltech.edu/CaltechAUTHORS:BABjmr07
![[img]](https://authors.library.caltech.edu/style/images/fileicons/application_pdf.png)
|
PDF
- Published Version
See Usage Policy. 320Kb |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:BABjmr07
Abstract
The factors governing the transport properties of yttrium-doped barium zirconate (BYZ) have been explored, with the aim of attaining reproducible proton conductivity in well-densified samples. It was found that a small initial particle size (50–100 nm) and high-temperature sintering (1600 °C) in the presence of excess barium were essential. By this procedure, BaZr0.8Y0.2O3-d with 93% to 99% theoretical density and total (bulk plus grain boundary) conductivity of 7.9 × 10^-3 S/cm at 600 °C [as measured by alternating current (ac) impedance spectroscopy under humidified nitrogen] could be reliably prepared. Samples sintered in the absence of excess barium displayed yttria-like precipitates and a bulk conductivity that was reduced by more than 2 orders of magnitude.
| Item Type: | Article | ||||||
|---|---|---|---|---|---|---|---|
| Related URLs: |
| ||||||
| ORCID: |
| ||||||
| Additional Information: | © 2007, Materials Research Society (Received 4 May 2006; accepted 25 January 2007) Funding for this work was provided by the United States Department of Energy through the National Energy Technology Laboratory, Office of Fossil Fuels (DE-FC26-02NT41631). Additional support was provided by the United States National Science Foundation (DMR-0080065) through Caltech’s Center for the Science and Engineering of Materials, an NSF Materials Research Science and Engineering Center (MRSEC). | ||||||
| Funders: |
| ||||||
| Issue or Number: | 5 | ||||||
| Record Number: | CaltechAUTHORS:BABjmr07 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:BABjmr07 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 8097 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Archive Administrator | ||||||
| Deposited On: | 30 Jul 2007 | ||||||
| Last Modified: | 02 Oct 2019 23:48 |
Repository Staff Only: item control page
