Reliable electrochemical testing protocols assessing the catalytic performance of novel materials, such as the rotating disk electrode method to determine the oxygen reduction reaction activity, play an essential role in the knowledge-based design of tailored electrocatalysts. However, these techniques are unable to accurately predict the performance of the developed electrocatalysts in membrane electrode assemblies (MEAs) which are ultimately used in full fuel cell measurements. Half-cell tests of gas diffusion electrodes have been shown to be a good compromise, with economical use of electrocatalysts while also mimicking the three-phase boundary in MEA during the presence of humidified reactant gas. In this review, we aim for a bird’s eye view of the set-ups already reported, how the testing protocols differ and how the protocols can be unified for a more consistent performance evaluation.

评估新型材料催化性能的可靠电化学测试协议，如确定氧还原反应活性的旋转圆盘电极法，在定制电催化剂的知识设计中发挥着重要作用。然而，这些技术无法准确预测最终用于全燃料电池测量的膜电极组件 (MEA) 中开发的电催化剂的性能。气体扩散电极的半电池测试已被证明是一种很好的折衷方案，经济地使用电催化剂，同时还模拟了加湿反应气体存在期间 MEA 中的三相边界。在这篇评论中，我们的目标是鸟瞰已经报道的设置，