Temperature Impacts on Oxygen Reduction Reaction Measured by the Rotating Disk Electrode Technique,The Journal of Physical Chemistry C

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Temperature Impacts on Oxygen Reduction Reaction Measured by the Rotating Disk Electrode Technique
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-01-22 , DOI: 10.1021/acs.jpcc.9b10173
Ziyi Zhu ₁ , Qingtao Liu ₁ , Xiaofang Liu ₁ , Jianglan Shui ₁

Affiliation

The response of the catalyst oxygen reduction reaction (ORR) activity to temperature is an important basis for identifying and selecting ORR catalysts which include platinum group metal (PGM) catalysts and PGM-free catalysts (including nonprecious metal catalysts and metal-free catalysts). Rotating disk electrode (RDE) technology is the most commonly used method for assessing ORR activity. Herein, the ORR activity parameters of three representative catalysts Pt/C, Fe–N–C, and N/P-doped carbon nanomaterials were measured by the RDE technique over a wide temperature range of 0–80 °C for the first time. Experimental results indicate that due to the significant decrease in oxygen concentration with increasing temperature, Pt/C exhibits the highest activity at ∼4 °C, while Fe–N–C and N/P–C achieve optimum performances at ∼40 and 60 °C respectively, at which the ORR kinetics and oxygen concentration in electrolyte are balanced.

中文翻译：

转盘电极技术测量温度对氧还原反应的影响

催化剂氧还原反应（ORR）活性对温度的响应是鉴定和选择ORR催化剂的重要基础，其中包括铂族金属（PGM）催化剂和不含PGM的催化剂（包括非贵金属和不含金属的催化剂）。旋转盘电极（RDE）技术是评估ORR活性的最常用方法。在此，首次通过RDE技术在0-80°C的宽温度范围内测量了三种代表性催化剂Pt / C，Fe–N–C和N / P掺杂的碳纳米材料的ORR活性参数。实验结果表明，由于氧气浓度随温度升高而显着降低，Pt / C在约4°C时表现出最高的活性，而Fe–N–C和N / P–C在约40和60°时达到最佳性能。 C分别

更新日期：2020-01-23

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