Mitchell-Williams T B, Tomov R I, Saadabadi S A, Krauz M, Aravind P V, Glowacki B A, Kumar R V
1Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom.
2Process and Energy Department, TU Delft, Delft, The Netherlands.
Mater Renew Sustain Energy. 2017;6(2):12. doi: 10.1007/s40243-017-0096-2. Epub 2017 May 17.
Commercially available anode supported solid oxide fuel cells (NiO-8YSZ/8YSZ/LSCF- 20 mm in diameter) were anode infiltrated with gadolinium doped ceria (CGO) using a scalable drop-on-demand inkjet printing process. Cells were infiltrated with two different precursor solutions-water based or propionic acid based. The saturation limit of the 0.5 μm thick anode supports sintered at 1400 °C was found to be approximately 1wt%. No significant enhancement in power output was recorded at practical voltage levels. Microstructural characterisation was carried out after electrochemical performance testing using high resolution scanning electron microscopy. This work demonstrates that despite the feasibility of achieving CGO nanoparticle infiltration into thick, commercial SOFC anodes with a simple, low-cost and industrially scalable procedure other loss mechanisms were dominant. Infiltration of model symmetric anode cells with the propionic acid based ink demonstrated that significant reductions in polarisation resistance were possible.
市售的阳极支撑型固体氧化物燃料电池（直径20毫米的NiO - 8YSZ/8YSZ/LSCF）采用可扩展的按需滴液喷墨印刷工艺，用钆掺杂二氧化铈（CGO）对阳极进行渗透。电池用两种不同的前驱体溶液进行渗透，一种是水基的，另一种是丙酸基的。发现在1400℃烧结的0.5μm厚阳极支撑体的饱和极限约为1wt%。在实际电压水平下，未记录到功率输出有显著提高。在电化学性能测试后，使用高分辨率扫描电子显微镜进行微观结构表征。这项工作表明，尽管通过简单、低成本且工业上可扩展的程序将CGO纳米颗粒渗透到厚的商用SOFC阳极中是可行的，但其他损耗机制占主导地位。用丙酸基墨水对模型对称阳极电池进行渗透表明，有可能显著降低极化电阻。
