The development of high-performance ORR catalysts that satisfy the requirements of low Pt content, high activity, and long-term durability is crucial. The adequately designed Pt₃Ni₁/N-rGO electrode, which was obtained by the regular dispersion and growth of uniform ≤ 5.0-nm-sized Pt₃Ni₁ alloy nanoparticles on an N-rGO support electrode by the solvothermal method, exhibited improved mass activity and specific surface activity (178% and 167%, respectively) compared to that of a commercial Pt/C electrode. The fabricated electrode showed almost unchanged ESCA and LSV polarization curves even after 5000 cyclic voltammetry tests. The Pt₃Ni₁/N-rGO electrode exhibited remarkable resistance to CO poisoning compared to that of the commercial Pt/C electrode. An electron-rich Pt–Ni–NC three-phase interface was created in the catalyst by introducing CN, which is more electron-rich than CC, to the rGO support, which increased its O₂ gas-adsorption properties and provided adequate strength for OH group formation that eventually accelerated their conversion into H₂O.

开发满足低 Pt 含量、高活性和长期耐久性要求的高性能 ORR 催化剂至关重要。充分设计的 Pt ₃ Ni ₁ /N-rGO 电极是通过溶剂热法在 N-rGO 支撑电极上规则分散和生长均匀的≤ 5.0 nm 尺寸的 Pt ₃ Ni ₁合金纳米颗粒获得的，表现出改进的性能。与商业 Pt/C 电极相比，质量活度和比表面活度（分别为 178% 和 167%）。即使经过 5000 次循环伏安测试，制造的电极也显示出几乎没有变化的 ESCA 和 LSV 极化曲线。Pt ₃ Ni ₁与商业 Pt/C 电极相比，/N-rGO 电极对 CO 中毒具有显着的抵抗力。通过将比 C C 更富电子的C N 引入到 rGO 载体中，在催化剂中形成了富电子 Pt-Ni-NC 三相界面，这增加了其对 O ₂气体的吸附性能并提供了足够的OH 基团形成的强度，最终加速了它们向 H ₂ O的转化。