Abstract Praseodymium oxides (Pr4O7 and Pr6O11) were added into Ni-Mo-Ce0.8Sm0.2O1.9 (SDC) anode. The single cell with PrO-Ni-Mo-SDC as the anode and SDC-carbonate composite as the electrolyte showed a higher cell performance and a lower polarization resistance with H2 as the fuel. It is hypothesized that PrO-Ni-Mo-SDC possesses more lattice oxygen atoms, and the Ce4+ and Ni2+ in PrO-Ni-Mo-SDC have lower reduction temperatures than those in Ni-Mo-SDC. Using methanol as the fuel, the maximum power density of the single cell with PrO-Ni-Mo-SDC as the anode was 594 mW cm−2 at 700 °C, which was slightly lower than that of the single cell with Ni-Mo-SDC as the anode. However, the single cell with PrO-Ni-Mo-SDC as the anode showed a better stability, which is probably due to its better coking resistance. The amount and the graphitization degree of the carbon deposited on PrO-Ni-Mo-SDC were lower than those of the carbon on Ni-Mo-SDC.

中文翻译：

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Ni基阳极中Pr添加对直接甲醇燃料固体氧化物燃料电池的影响

摘要 在 Ni-Mo-Ce0.8Sm0.2O1.9 (SDC) 阳极中加入氧化镨（Pr4O7 和 Pr6O11）。以 PrO-Ni-Mo-SDC 为阳极、SDC-碳酸盐复合材料为电解质的单电池以 H2 为燃料显示出更高的电池性能和更低的极化电阻。推测 PrO-Ni-Mo-SDC 具有更多的晶格氧原子，并且 PrO-Ni-Mo-SDC 中的 Ce4+ 和 Ni2+ 的还原温度低于 Ni-Mo-SDC 中的还原温度。以甲醇为燃料，以 PrO-Ni-Mo-SDC 为阳极的单体电池在 700°C 时的最大功率密度为 594 mW cm-2，略低于以 Ni-Mo 为负极的单体电池-SDC 作为阳极。然而，以 PrO-Ni-Mo-SDC 作为阳极的单电池表现出更好的稳定性，这可能是由于其更好的抗焦化性。