Back to Search
Start Over
Highly-conductive proton-conducting electrolyte membranes with a low sintering temperature for solid oxide fuel cells.
- Source :
-
Journal of Membrane Science . Jul2018, Vol. 558, p17-25. 9p. - Publication Year :
- 2018
-
Abstract
- The microwave sintering strategy was for the first time adopted to prepare proton-conducting electrolyte membranes for solid oxide fuel cells. The preparation of a dense proton-conducting BaCe 0.7 Zr 0.1 Y 0.2 O 3-δ (BCZY) electrolyte membrane can be achieved at 1200 °C with the microwave sintering method. In sharp contrast, a BCZY sample prepared at 1200 °C using the conventional thermal sintering method was found to be porous. In comparison with a dense BCZY sample prepared at 1400 °C using the conventional sintering method, the microwave-sintered BCZY electrolyte showed an improved proton conductivity, which is beneficial for fuel cell applications. Experimental results showed that the microwave sintering method enabled a homogenous elemental distribution and a suppression of barium evaporation, leading to the conductivity improvement in both bulk and grain boundaries. With the microwave sintered BCZY film as the electrolyte, a proton-conducting solid oxide fuel cell delivered a maximum power density of 838 mW cm −2 at 700 °C with an electrolyte film conductivity as high as 1.4 × 10 −2 S cm −1 . This study suggests that the microwave sintering method is a promising strategy to prepare electrolyte membranes at a relatively low temperature with high conductivity, which could advance the development of proton-conducting solid oxide fuel cells. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PROTON conductivity
*MICROWAVES
*ELECTROLYTES
*SOLID oxide fuel cells
*SINTERING
Subjects
Details
- Language :
- English
- ISSN :
- 03767388
- Volume :
- 558
- Database :
- Academic Search Index
- Journal :
- Journal of Membrane Science
- Publication Type :
- Academic Journal
- Accession number :
- 129588608
- Full Text :
- https://doi.org/10.1016/j.memsci.2018.04.037