Investigating the Catalytic Requirements of Perovskite Fuel Electrodes Using Ultra-Low Metal Loadings
Investigating the Catalytic Requirements of Perovskite Fuel Electrodes Using Ultra-Low Metal Loadings
复制标题
DOI：
10.1149/1945-7111/ac1703
复制
发表时间：
2021-07
影响因子：
3.9
通讯作者：
J. Paige;Duy-Linh Vu;Tianyu Cao;S. McIntosh;R. Gorte;J. Vohs
中科院分区：
文献类型：
--
作者：
J. Paige;Duy-Linh Vu;Tianyu Cao;S. McIntosh;R. Gorte;J. Vohs
采用La0.3Sr0.7TiO3（LST）-Y2 O3稳定的ZrO 2（YSZ）阳极，将LST浸渍到多孔YSZ支架中，然后用原子层沉积（ALD）法对阳极进行Ni、Pt、Pd、Fe、Co和CeO 2的改性，制备了固体氧化物燃料电池（SOFC）。重量负载低至0.01%的Pt，Ni和Pd足以降低阳极阻抗的数量级，在973 K的加湿H2中操作。CeO 2、Co和Fe的影响较小，但仍显着。在较高温度下烧结是重要的。稳定的金属颗粒和发展陶瓷阳极的影响的可能途径进行了讨论。
Solid Oxide Fuel Cells (SOFC) with La0.3Sr0.7TiO3 (LST)–yttria-stabilized ZrO2 (YSZ) anodes were prepared by impregnation of LST into porous YSZ scaffolds and then modified by Atomic Layer Deposition (ALD) of Ni, Pt, Pd, Fe, Co. and CeO2. Weight loadings as low as 0.01% of Pt, Ni, and Pd were sufficient to decrease anode impedances by orders of magnitude for operation in humidified H2 at 973 K. The effects of CeO2, Co, and Fe were less but still significant. Sintering at higher temperatures was important. Possible ways of stabilizing the metal particles and implications for developing ceramic anodes are discussed.