Citation: Mengyi Xi, Kaiqing Wu, Jingjing Chen, Yanfei Shen, Songqin Liu, Ran Chen, Yuanjian Zhang. Recent advances of analytical methods for intermediates of reactive oxygen species in electrocatalytic oxygen reduction reactions[J]. Chinese Chemical Letters, ;2026, 37(5): 111915. doi: 10.1016/j.cclet.2025.111915 shu

Recent advances of analytical methods for intermediates of reactive oxygen species in electrocatalytic oxygen reduction reactions

Mengyi Xi ^{a, 1} ,
Kaiqing Wu ^{a, *,} ,
Jingjing Chen ^a ,
Yanfei Shen ^b ,
Songqin Liu ^a ,
Ran Chen ^{a, *,} ,
Yuanjian Zhang ^{a, *,}

a.
Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Devices, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
b.
Medical School, Southeast University, Nanjing 210009, China

Kaiqing.Wu@seu.edu.cn

rchen@seu.edu.cn

Yuanjian.Zhang@seu.edu.cn

Received Date: 2 May 2025
Revised Date: 12 August 2025
Accepted Date: 28 September 2025
Available Online: 28 September 2025

Figures(11)

Electrocatalytic oxygen reduction reaction (ORR) is a key sustainable energy process, but its efficiency and durability are severely affected by reactive oxygen species (ROS) such as hydroxyl radicals and superoxide anions. Understanding the kinetics of these transient intermediates is crucial for revealing the ORR mechanism and designing novel electrocatalysts. Many new in situ and operando characterization techniques have emerged in ROS detection. This article reviews recent progress in the detection and quantification methods for ROS during the electrocatalytic ORR, including fluorescence spectroscopy, UV–vis absorption spectroscopy, electron paramagnetic spectroscopy, scanning electrochemical microscopy, and electrochemiluminescence related technologies. The aim is to provide latest references for researchers in this field and promote further development of electrocatalytic ORR related research.
- Oxygen reduction reaction,
- Reactive oxygen species,
- Characterization techniques,
- Electrocatalysts,
- Mechanism
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沈阳化工大学材料科学与工程学院沈阳 110142