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Effective Ionic Conductivity of a Novel Intermediate-Temperature Mixed Oxide-Ion and Carbonate-Ion Conductor
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xiao, Guoliang Huang, Kevin |
| Copyright Year | 2011 |
| Abstract | The discovery of new fast ionic conductors has been long pursued by solid state chemists due to the important roles they play in modern solid state ionic devices. The Sr- and Mg-doped LaGaO3 LSGM perovskite oxide-ion conductor discovered in the mid1990s is a good example illustrating the fruition of years’ of continual efforts in this area. The oxide-ion conductivity of LSGM at 800°C is as high as that of Y2O3-doped ZrO2 at 1000°C and is stable over a broad range of partial pressures of oxygen. As an electrolyte of the solid oxide fuel cell SOFC, these attributes connote higher chemical-to-electrical conversion efficiency or less performance loss at a given temperature and/or reduced operating temperature for a given performance. The latter is of practical importance because lowering the operating temperature of an SOFC could drastically improve the performance stability and reduce the system cost, the two foremost obstacles presently impeding the commercialization of the SOFC technology. The common features of existing good oxide-ion conductors such as ZrO2-, CeO2-, and LaGaO3-based oxides can be characterized by oxygen vacancies available in the lattice and cubic structure of high symmetry. 1-3 |
| File Format | PDF HTM / HTML |
| DOI | 10.1149/1.3524477 |
| Volume Number | 158 |
| Alternate Webpage(s) | https://scholarcommons.sc.edu/cgi/viewcontent.cgi?article=1069&context=emec_facpub&httpsredir=1&referer= |
| Alternate Webpage(s) | https://scholarcommons.sc.edu/cgi/viewcontent.cgi?article=1069&context=emec_facpub |
| Alternate Webpage(s) | https://doi.org/10.1149/1.3524477 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
