This work reports the first account of perovskite oxide and carbon composite oxygen reduction reaction (ORR) catalysts integrated into anion exchange membrane fuel cells (AEMFCs). Perovskite oxides with a theoretical stoichiometry of Ca_0.9La_0.1Al_0.1Mn_0.9O_3-δ are synthesized by an aerogel method and calcined at various temperatures, resulting in a set of materials with varied surface chemistry and surface area. Material composition is evaluated by X-ray diffraction, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The perovskite oxide calcined at 800 °C shows the importance of balance between surface area, purity of the perovskite phase, and surface composition, resulting in the highest ORR mass activity when evaluated in rotating disk electrodes. Integration of this catalyst into AEMFCs reveals that the best AEMFC performance is obtained when using composites with 30:70 perovskite oxide:carbon composition. Doubling the loading leads to an increase in the power density from 30 to 76 mW cm⁻². The AEMFC prepared with a composite based on perovskite oxide and N-carbon achieves a power density of 44 mW cm⁻², demonstrating an ∼50% increase when compared to the highest performing composite with undoped carbon at the same loading.

这项工作报告了钙钛矿氧化物和碳复合氧还原反应（ORR）催化剂集成到阴离子交换膜燃料电池（AEMFC）中的第一个说明。理论化学计量为Ca _0.9 La _0.1 Al _0.1 Mn _0.9 O3 _-δ的钙钛矿氧化物它们是通过气凝胶法合成的，并在不同的温度下煅烧，从而形成具有不同表面化学性质和表面积的一组材料。通过X射线衍射，能量色散X射线光谱学和X射线光电子能谱评价材料组成。在800°C下煅烧的钙钛矿氧化物显示出表面积，钙钛矿相纯度和表面组成之间平衡的重要性，当在旋转圆盘电极中进行评估时，可获得最高的ORR质量活性。将该催化剂整合到AEMFC中表明，当使用钙钛矿氧化物：碳含量为30:70的复合材料时，可以获得最佳的AEMFC性能。负载加倍导致功率密度从30 mW cm ^-2增加到76 mW cm ^-2。用基于钙钛矿氧化物和N-碳的复合材料制备的AEMFC的功率密度为44 mW cm ^-2，与相同负载下未掺杂碳的性能最高的复合材料相比，功率密度提高了约50％。