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- W2743136906 abstract "Phase instability in praseodymium nickelates is a major concern for the long-term operations of solid oxide fuel cells since it may lead to the performance degradation. In this work, praseodymium nickelates (ex. Pr2NiO4+δ) have been stabilized via substitution on both Pr- and Ni-sites. Systematic studies over a wide range of compositions were conducted via long-term thermal annealing studies (T ≤ 870°C) and electrochemical tests in full cells. Proposed (Pr0.50Nd0.50)2Ni1-yCuyO4+δ compositions (y = 0.05, 0.10, 0.20, and 0.30) showed the most promising results and serve as a comprehensive extension to our previous studies in this series of papers. A stable long-term performance was obtained for temperatures up to 790°C for 500 hours at 0.80 V with a minimal tradeoff between the activity (power density of 0.8–1.0 W cm−2 at 850°C) and performance stability. A preserved parent phase and suppressed performance degradation, when compared to Pr2NiO4+δ, make newly developed electrodes attractive candidates for the state-of-the-art solid oxide fuel cell applications." @default.
- W2743136906 created "2017-08-17" @default.
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- W2743136906 date "2017-01-01" @default.
- W2743136906 modified "2023-10-14" @default.
- W2743136906 title "Activity and Stability of (Pr<sub>1-x</sub>Nd<sub>x</sub>)<sub>2</sub>NiO<sub>4+δ</sub>as Cathodes for Oxide Fuel Cells: Part VI. The Role of Cu Dopant on the Structure and Electrochemical Properties" @default.
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- W2743136906 doi "https://doi.org/10.1149/2.0021710jes" @default.
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