The effects of solid carbon on NO electrocatalytic reduction in the presence of O₂ content, as low as can be found in a gasoline engine, were investigated. Tubular solid-state fuel cells filled with Fe-loaded carbon materials (Fe-loaded activated carbon, Fe-AC, and Fe-loaded carbon black, Fe-BC) were fabricated for electrochemical reduction in the configuration of LSM as the cathode, NiO-YSZ mixed powder as the anode, and YSZ as the electrolyte. A moderate NO removal efficiency of 60% and maximum peak power density of 0.035 W cm⁻² were achieved for Fe-AC in the presence of 1% O₂, whereas no such performances were detected in the case of AC. Following TGA-MS and in-situ analyses of exit gases from the anodes, it can be concluded that Fe-loaded carbon materials promote CO formation in Boudouard reactions by utilizing excess oxygen transported from the cathode, which is capable of alleviating the impact of oxygen on NO removal while also enhancing electrical performance. The formation of CO contributes to the reduction of both concentration polarization loss and activation polarization loss at both electrodes.

研究了在O ₂含量存在下，固体碳对NO电催化还原的影响，这种影响低至汽油发动机。制造了填充有铁负载的碳材料（铁负载的活性炭，Fe-AC和铁负载的炭黑，Fe-BC）的管状固态燃料电池，用于电化学还原LSM作为阴极NiO -YSZ混合粉末作为阳极，YSZ作为电解质。在1％O ₂的存在下，Fe-AC的脱氮效率为60％，最大峰值功率密度为0.035 W cm ^-2，而在AC的情况下则未检测到此类性能。通过TGA-MS和对阳极排出气体的原位分析，可以得出结论，负载Fe的碳材料通过利用从阴极输送的过量氧气来促进Boudouard反应中的CO形成，从而能够减轻氧气的影响去除NO的同时还提高了电气性能。CO的形成有助于减少两个电极上的浓度极化损失和活化极化损失。