论文标题
功能性薄膜作为阴极/电解质中间层：增强固体氧化物燃料电池的性能和耐用性的策略
Functional thin films as cathode/electrolyte interlayers: a strategy to enhance the performance and durability of solid oxide fuel cells
论文作者
论文摘要
诸如固体氧化物燃料电池（SOFC）之类的电化学设备可能会受益于实施纳米工程的薄膜多功能层，从而提供了增强的电化学活性，改善的机械稳定性和长期稳定性。在这项研究中，一个超薄的（400 nm）双层糖陶瓷和由Sm0.2CE0.2CE0.9-LA0.8SR0.2MNO3- $Δ$制成的自组装纳米复合材料由脉冲激光deposeed制造，并用作燃料式氧气元素，并被用作燃料式氧气元素。在细胞体系结构中引入功能性双层，为制造高性能燃料电池（功率密度1.0 w.cm-2时，在0.7 V和750 $^\ circ $ c）提供了一种简单的处理技术。进行耐用性测试长达1500 h，显示在极端工作条件下的较小降解，而在0.5 a.cm-2的稳定行为。测试后分析，包括扫描和透射电子显微镜以及电化学阻抗光谱，表明纳米工程薄膜层在手术后主要在形态上保持稳定。
Electrochemical devices such as solid oxide fuel cells (SOFC) may greatly benefit from the implementation of nanoengineered thin-film multifunctional layers providing, alongside enhanced electrochemical activity, improved mechanical, and long-term stability. In this study, an ultrathin (400 nm) bilayer of samarium-doped ceria and a self-assembled nanocomposite made of Sm0.2Ce0.8O1.9-La0.8Sr0.2MnO3-$δ$ was fabricated by pulsed laser deposition and is employed as a functional oxygen electrode in an anode-supported solid oxide fuel cell. Introducing the functional bilayer in the cell architecture results in a simple processing technique for the fabrication of high-performance fuel cells (power density 1.0 W.cm-2 at 0.7 V and 750 $^\circ$C). Durability tests were carried out for up to 1500 h, showing a small degradation under extreme operating conditions of 1 A.cm-2, while a stable behaviour at 0.5 A.cm-2. Post-test analyses, including scanning and transmission electron microscopy and electrochemical impedance spectroscopy, demonstrate that the nanoengineered thin film layers remain mostly morphologically stable after the operation.
