The sluggish oxygen reduction reaction (ORR) has becoming the bottleneck of largescale implementation of proton exchange membrane fuel cells. However, when it comes to the ORR activity assessing of platinum group metals (PGMs) with rotating disk electrode, the corresponding potential conversion vs. reversible hydrogen electrode, test protocols, and activity calculation processes are still in chaos in many published literatures. In this work, two standard calculation processes for PGM ORR activities are demonstrated, followed by a specification for the usage of reference electrodes. Then a 4-fold discrepancy in ORR activities obtained via different test protocols is found for the same Pt/C, and an average adsorption model and the “coverage effects” are proposed to illustrate the hysteresis loop between negative and positive-going ORR polarization plots. Finally, four motions over appropriate assessment of PGM ORR activity are emphasized, hoping to bring a fair communication platform for researchers from different groups.

缓慢的氧还原反应（ORR）已成为质子交换膜燃料电池大规模实施的瓶颈。然而，当涉及使用旋转圆盘电极评估铂族金属 (PGMs) 的 ORR 活性时，相应的电位转换与可逆氢电极、测试方案和活性计算过程在许多已发表的文献中仍然处于混乱状态。在这项工作中，演示了 PGM ORR 活动的两个标准计算过程，然后是参考电极的使用规范。然后发现对于相同的 Pt/C，通过不同的测试方案获得的 ORR 活性存在 4 倍的差异，提出了平均吸附模型和“覆盖效应”来说明负向和正向 ORR 极化图之间的滞后回线。最后，强调了关于适当评估 PGM ORR 活动的四项议案，希望为不同群体的研究人员带来一个公平的交流平台。