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- W2060634237 abstract "Significant improvements on sintering characteristic and electrical performance of traditional interconnect La0.7Ca0.3CrO3−δ were presented in this paper. For a composite interconnecting ceramic La0.7Ca0.3CrO3−δ/Ce0.8Nd0.2O1.9, it was found that the addition of Ce0.8Nd0.2O1.9 significantly increased the electrical conductivity of La0.7Ca0.3CrO3−δ both in air and in hydrogen. Among all the investigated specimens, La0.7Ca0.3CrO3−δ with 5 wt% Ce0.8Nd0.2O1.9 possessed the maximal electrical conductivity. In air and hydrogen, the maximal electrical conductivity at 800 °C were 55.4 S cm−1 and 5.0 S cm−1, respectively, which increased significantly as compared with La0.7Ca0.3CrO3−δ under the same conditions. With the increase of Ce0.8Nd0.2O1.9 content the relative density increased, reaching 97.1% from 93.9% of La0.7Ca0.3CrO3−δ. This indicated that Ce0.8Nd0.2O1.9 functioned as an effective sintering aid in enhancing the sinterability of the powders. The average coefficient of thermal expansion at 30–1000 °C in air increased with Ce0.8Nd0.2O1.9 content. Most coefficients of thermal expansion of specimens are compatible with other cell components. The oxygen permeation measurement illustrated a negligible oxygen ionic conduction, indicating it is still an electronically conducting ceramic. Results indicate that this composite is suitable to be used as a high-performance interconnect for intermediate temperature solid oxide fuel cells." @default.
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- W2060634237 date "2009-06-01" @default.
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- W2060634237 title "Improved electrical performance and sintering ability of the composite interconnect La0.7Ca0.3CrO3−δ/Ce0.8Nd0.2O1.9 for solid oxide fuel cells" @default.
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- W2060634237 doi "https://doi.org/10.1016/j.jpowsour.2009.02.071" @default.
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