Discovering an active and durable catalyst for oxygen reduction reaction is crucial to the commercialization of fuel cells, but remains grand challenging. Here we report, for the first time, the trace doping of early transition metal (ETM) Re into ultrathin PtNiGa nanowires (Re-PtNiGa NWs) to construct a novel catalyst integrating the superior activity, long-time durability, and high utilization efficiency of Pt atoms. Impressively, the Re-PtNiGa tetrametallic NWs present a 19.6-fold enhancement in mass activity (3.49 A mg⁻¹_Pt) compared to commercial Pt/C catalyst and only a 10.6% loss in mass activity after 20,000 cycles of durability test. Moreover, the real fuel cell assembled by Re-PtNiGa NWs on the cathode strongly supports its great potential in fuel cells. The density functional theory calculations reveal that introduction of ETM Re into PtNiGa NWs could weaken binding strength of oxygenated species and elevate dissolution potential, well rationalizing the great enhancements in activity and durability.

发现一种活性且耐用的氧还原反应催化剂对于燃料电池的商业化至关重要，但仍然具有巨大的挑战性。在这里，我们首次报道了将早期过渡金属 (ETM) Re 微量掺杂到超薄 PtNiGa 纳米线 (Re-PtNiGa NWs) 中，以构建一种集优异活性、长期耐久性和高利用效率于一体的新型催化剂。铂原子。令人印象深刻的是，Re-PtNiGa 四金属纳米线的质量活性提高了 19.6 倍（3.49 A mg ^-1 _Pt) 与商业 Pt/C 催化剂相比，在 20,000 次耐久性测试循环后，质量活性仅损失 10.6%。此外，由 Re-PtNiGa NWs 在阴极上组装的真正燃料电池有力地支持了其在燃料电池中的巨大潜力。密度泛函理论计算表明，将 ETM Re 引入 PtNiGa NW 可以削弱含氧物质的结合强度并提高溶解潜力，从而使活性和耐久性的显着提高合理化。