High operation temperature of solid oxide fuel cell (SOFC) results in high cell and operation cost, time consuming and fast cell degradation. Developing high performance SOFC that operates at lower temperature is required. Here we demonstrate 24 GHz microwave as a rapid heating source to replace conventional heating method for SOFC operation using 20 mol% Sm doped CeO₂ electrolyte-supported single cell. The tested cell shows improvement of 62% in maximum power density at 630 °C under microwave heating. This improvement governs by bulk conductivity of the electrolyte. Investigation of ionic transference number reveals that the value is unchanged under microwave irradiation, confirming the charge carrier is dominated by oxygen ion species. This work shows a potential new concept of high performance as well as cost and energy effective SOFC.

固体氧化物燃料电池（SOFC）的高工作温度导致高的电池和运行成本，耗时和快速的电池退化。需要开发在较低温度下工作的高性能SOFC。在这里，我们展示了24 GHz微波作为一种快速加热源，以取代使用20 mol％Sm掺杂的CeO ₂进行SOFC操作的常规加热方法电解质支持的单电池。测试的电池在微波加热下，在630°C下的最大功率密度提高了62％。这种改进取决于电解质的体积电导率。离子转移数的研究表明，在微波辐射下该值不变，这证明电荷载流子主要由氧离子组成。这项工作展示了潜在的高性能新概念以及具有成本和能源效益的SOFC。