The development of high-catalytic-activity anode materials with carbon tolerance is an important research undertaking for the successful application of intermediate-temperature solid oxide fuel cells (IT-SOFCs). Herein, a novel anode material capable of in-situ exsolution of nanoparticles, Sr_1.95Fe_1.4Co_0.1Mo_0.5O_6-δ (SFCoM), is designed and prepared from perovskite by a strategy combining A-site defect regulation and B-site doping. The electrocatalytic activity is greatly enhanced by the in-situ exsolved Co nanoparticle. The maximum power densities of a single cell with Co@SFCoM as the anode are 1.01 and 0.79 W cm⁻² when H₂ and C₃H₈, respectively, are used as the fuel at 750 °C. In addition, the Co@SFCoM anode exhibits excellent carbon-deposition resistance due to the synergistic effect of the Co nanoparticles and perovskite backbone. When C₃H₈ is used as the fuel, the anode material long-term operational stability over 200 h without performance degradation. Thus, our methodology represents a promising material design strategy for developing high-performance IT-SOFC anodes.

开发具有碳耐受性的高催化活性负极材料是成功应用中温固体氧化物燃料电池（IT-SOFC）的重要研究工作。本文以钙钛矿为研究对象，通过结合A位缺陷调控和B位的策略，设计并制备了一种能够原位释放纳米粒子的新型阳极材料Sr _1.95 Fe _1.4 Co _0.1 Mo _0.5 O _6- δ（SFCoM）。掺杂。原位溶解的Co纳米粒子大大提高了电催化活性。当H ₂和C ₃ H时，以Co @ SFCoM为阳极的单个电池的最大功率密度为1.01和0.79 W cm ^-2。分别在750°C下使用_8个作为燃料。另外，由于Co纳米颗粒和钙钛矿主链的协同作用，Co @ SFCoM阳极表现出优异的抗碳沉积性能。当C ₃ H ₈用作燃料时，负极材料在200小时内的长期运行稳定性不会降低性能。因此，我们的方法论代表了开发高性能IT-SOFC阳极的有前途的材料设计策略。