To reduce the cost of fuel cell stacks and systems, it is important to create commercial catalysts that are free of platinum group metals (PGMs). To do this, such catalysts must have very high activity, but also have the correct microstructure to facilitate the transport of reactants and products. Here, we show a high-performing commercial oxygen reduction catalyst that was specifically developed for operation in alkaline media and is demonstrated in the cathode of operating anion-exchange membrane fuel cells (AEMFCs). With H₂/O₂ reacting gases, AEMFCs made with Fe–N–C cathodes achieved a peak power density exceeding 2 W cm⁻² (>1 W cm⁻² with H₂/air) and operated with very good voltage durability for more than 150 h. These AEMFCs also realized an iR-corrected current density at 0.9 V of 100 mA cm⁻². Finally, in a second configuration, Fe–N–C cathodes paired with low-loading PtRu/C anodes (0.125 mg PtRu per cm², 0.08 mg Pt per cm²) demonstrated a specific power of 10.4 W per mg PGM (16.25 W per mg Pt).

为了降低燃料电池堆和系统的成本，制造不含铂族金属 (PGM) 的商业催化剂非常重要。为此，此类催化剂必须具有非常高的活性，而且还必须具有正确的微观结构以促进反应物和产物的传输。在这里，我们展示了一种高性能的商业氧还原催化剂，该催化剂专为在碱性介质中运行而开发，并在运行的阴离子交换膜燃料电池 (AEMFC) 的阴极中得到证明。使用 H ₂ /O ₂反应气体，由 Fe-N-C 阴极制成的 AEMFC 的峰值功率密度超过 2 W cm ^-2 （ H ₂时>1 W cm ^-2/air) 并以非常好的电压耐久性运行超过 150 小时。这些 AEMFC 还在0.9 V 时实现了 100 mA cm ^-2的iR校正电流密度。最后，在第二种配置中，Fe-N-C 阴极与低负载 PtRu/C 阳极（0.125 mg PtRu/cm ²，0.08 mg Pt/cm ²）的比功率为 10.4 W/mg PGM（16.25 W每毫克铂）。