Abstract High-performance electrodes for energy conversion systems can be achieved through the selection of materials with appropriate functionality as well as fabricating the desired nanoarchitectures. Nanohybrids of metal and perovskite metal oxide have a great potential as electrodes owing to the combined advantages of the active constituents; however, the controlled hybridization in nanoscale is hindered by the conflicting nature of the metal and perovskite oxide, and it should involve cost-, energy- and time-intensive fabrication techniques. Here, we report an electrochemical process as a facile, cost-effective, and scalable route to fabricating metal–perovskite metal oxide nanohybrids with tailored architectures. We successfully fabricate a Pt@LaCoO3 nanohybrid that consists of a conformal LaCoO3 nanonetwork on a nanoporous Pt thin-film framework. We examine this nanohybrid as an electrode for thin-film-based, low-temperature solid oxide fuel cells and demonstrate that the synergistic nanostructuring of Pt@LaCoO3 leads to exceptionally high oxygen reduction activity at reduced operating temperature and high stability.

中文翻译：

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用于低温薄膜固体氧化物燃料电池的钙钛矿氧化物基纳米杂化物通过简便且可扩展的电化学工艺制造

摘要 用于能量转换系统的高性能电极可以通过选择具有适当功能的材料以及制造所需的纳米结构来实现。由于活性成分的综合优势，金属和钙钛矿金属氧化物的纳米杂化物具有作为电极的巨大潜力；然而，纳米级的受控杂化受到金属和钙钛矿氧化物的冲突性质的阻碍，并且它应该涉及成本、能源和时间密集的制造技术。在这里，我们报告了一种电化学工艺，它是一种简便、经济且可扩展的途径，用于制造具有定制结构的金属-钙钛矿金属氧化物纳米杂化物。我们成功地制造了一种 Pt@LaCoO3 纳米杂化物，它由纳米多孔 Pt 薄膜框架上的共形 LaCoO3 纳米网络组成。我们研究了这种纳米杂化物作为薄膜基低温固体氧化物燃料电池的电极，并证明了 Pt@LaCoO3 的协同纳米结构在降低的工作温度和高稳定性下导致异常高的氧还原活性。