Symmetrical Solid Oxide Fuel Cell has identical electrode material on both electrodes, of which the most outstanding advantage is the ability to remove the deposited carbon and other deposits from anode. Owing to the working conditions of electrodes, there are more requirements for electrode materials than normal ones. In this study, we evaluate the traditional cathode material PrNi_0.4Fe_0.6O_3-δ as a symmetrical solid oxide fuel cell electrode material. Unstable as most traditional cathode materials are in fuel gas, however, the result here exhibits PrNi_0.4Fe_0.6O_3-δ has good performance. The peak power density of the cell with PrNi_0.4Fe_0.6O_3-δ electrode in wet methane at 800 °C is 663 mWcm⁻² with observable decomposition on anode. After switching the fuel gas on anode to air, the structure recovers quickly. In terms of the recyclable performance, PrNi_0.4Fe_0.6O_3-δ seems suitable for symmetrical solid oxide fuel cell.

对称固体氧化物燃料电池在两个电极上具有相同的电极材料，其中最突出的优势是能够从阳极去除沉积的碳和其他沉积物。由于电极的工作条件，对电极材料的要求比普通电极更高。在这项研究中，我们评估传统的正极材料PrNi _0.4 Fe _0.6 O3 _-δ作为对称的固体氧化物燃料电池电极材料。由于大多数传统的阴极材料都存在于燃料气体中，因此不稳定，但是在此结果表明PrNi _0.4 Fe _0.6 O3 _-δ具有良好的性能。PrNi _0.4 Fe _0.6的电池的峰值功率密度800°C的湿甲烷中的O3 _-δ电极为663 mWcm ^-2，在阳极上可观察到分解。将阳极上的燃料气体切换为空气后，该结构会迅速恢复。就可回收性能而言，PrNi _0.4 Fe _0.6 O3 _-δ似乎适用于对称固体氧化物燃料电池。