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Oxide-ion conductivity in CuxCe1−xO2−δ (0 ≤ x ≤ 0.10) |
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| Authors: | Arup Gayen AK Shukla MS Hegde |
| Affiliation: | a Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India b Department of Physics, Goa University, Taleigao Plateau, Goa 403206, India c Materials Research Centre, Indian Institute of Science, Bangalore 560012, India |
| Abstract: | Up to 10 at.% of copper readily substitutes for cerium in ceria. It is found that at oxygen partial pressures between 0.21 atm and 10−5 atm, CuxCe1−xO2−δ (0 ≤ x ≤ 0.10) solid solution behave as an oxide-ion electrolyte. Interestingly, Cu0.10Ce0.90O2−δ exhibits the oxide-ion conductivity of ca. 10−4 Ω−1 cm−1 at 600 °C at an oxygen partial pressure of 10−5 atm. |
| Keywords: | A Oxides B Chemical synthesis C Impedance spectroscopy D Defects D Ionic conductivity |
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