Zhao Shuang, Huang Liwen, Huang Min, Lin Wen-Feng, Wu Yan
Engineering Research Center of Nano-Geo Materials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, No. 388 Lumo Road, Wuhan 430074, China.
School of Physics, Hubei University, Wuhan 430062, P. R. China.
ACS Appl Mater Interfaces. 2023 Dec 27;15(51):59512-59523. doi: 10.1021/acsami.3c14336. Epub 2023 Dec 15.
Developing catalytic materials with highly efficient oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is essential for lower-temperature solid oxide fuel cell (SOFC) and electrolysis cell (SOEC) technologies. In this work, a novel triple perovskite material, NdBaCoNiMnO, has been developed and employed as a catalyst for both ORR and OER in SOFC and SOEC operations at relatively lower temperatures, showing a low polarization resistance of 0.327 Ω cm, high-power output of SOFC up to 773 mW cm at 650 °C, and a high current density of 1.57 A cm from SOEC operation at 1.5 V at 600 °C. The relaxation time distribution reveals that NdBaCoNiMnO could maintain a slow polarization process at the relatively low operating temperature, offering a significant antipolarization advantage over other perovskite electrode materials. The NdBaCoNiMnO electrode provides a low energy barrier of about 0.36 eV in oxygen ion mobility, which is beneficent for oxygen reduction/evolution reaction processes.
开发具有高效氧还原反应（ORR）和析氧反应（OER）的催化材料对于低温固体氧化物燃料电池（SOFC）和电解池（SOEC）技术至关重要。在这项工作中，一种新型的三重钙钛矿材料NdBaCoNiMnO已被开发出来，并用作SOFC和SOEC在相对较低温度下运行时ORR和OER的催化剂，显示出0.327Ω·cm的低极化电阻、在650°C时SOFC高达773 mW/cm²的高功率输出以及在600°C、1.5 V下SOEC运行时1.57 A/cm²的高电流密度。弛豫时间分布表明，NdBaCoNiMnO在相对较低的运行温度下能够保持缓慢的极化过程，与其他钙钛矿电极材料相比具有显著的抗极化优势。NdBaCoNiMnO电极在氧离子迁移率方面提供了约0.36 eV的低能垒，这有利于氧还原/析氧反应过程。
