CAS Key Laboratory of Materials for Energy Conversion & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China , Hefei 230026, People's Republic of China.
Institute for Superconducting and Electronic Materials, University of Wollongong , Wollongong, New South Wales 2522, Australia.
ACS Appl Mater Interfaces. 2016 May 4;8(17):10835-40. doi: 10.1021/acsami.6b01000. Epub 2016 Apr 25.
Developing highly efficient ceria-based solid oxide fuel cells with high power density is still a big concern for commercial applications. In this work, a novel structured Ce0.8Sm0.2O2-δ (SDC)-based fuel cell with a bilayered anode consisting of Ni-SDC and Ni-BaZr0.1Ce0.7Y0.2O3-δ (Ni-BZCY) was designed. In addition to the catalysis function, the Ni-BZCY anode "functional" layer also provides Ba source for generating an electron-blocking layer in situ at the anode/electrolyte interface during sintering. The Ni-BZCY thickness significantly influences the quality of the electron-blocking layer and electrochemical performances of the cell. The cell with a 50 μm thick Ni-BZCY layer exhibits the best performance in terms of open circuit voltage (OCV) and peak power density (1068 mW cm(-2) at 650 °C). The results demonstrate that this cell with an optimal structure has a distinct advantage of delivering high power performance with a high efficiency at reduced temperatures.
开发具有高功率密度的高效铈基固体氧化物燃料电池仍然是商业应用中的一个重大关注点。在这项工作中，设计了一种新型的双层结构的基于 Ce0.8Sm0.2O2-δ（SDC）的燃料电池，其阳极由 Ni-SDC 和 Ni-BaZr0.1Ce0.7Y0.2O3-δ（Ni-BZCY）组成。除了催化作用外，Ni-BZCY 阳极“功能”层还在烧结过程中为在阳极/电解质界面原位生成电子阻挡层提供了 Ba 源。Ni-BZCY 的厚度显著影响电子阻挡层的质量和电池的电化学性能。具有 50μm 厚 Ni-BZCY 层的电池在开路电压（OCV）和峰值功率密度（在 650°C 时为 1068 mW cm(-2)）方面表现出最佳性能。结果表明，这种具有最佳结构的电池具有在降低温度下提供高效率和高功率性能的明显优势。
