Detection and imaging of reactive oxygen species associated with the electrochemical oxygen evolution by hydrodynamic scanning electrochemical microscopy

作者：Iffel**erger Christian; Raith Timo; Vatsyayan Preety; Vyskocil Vlastimil; Matysik Frank Michael^*

来源：Electrochimica Acta, 2018, 281: 494-501.

DOI：10.1016/j.electacta.2018.05.115

• Boron-doped diamond
• Hydrodynamic scanning electrochemical microscopy
• Reactive oxygen species
• Tip-substrate voltammetry

Hydrodynamic scanning electrochemical microscopy (SECM) was applied for the characterization of Pt and boron-doped diamond (BDD) macroelectrodes operated in a potential region producing reactive oxygen species (ROS) during oxygen evolution reaction (OER). Forced convection introduced by high-precision stirring enabled the formation of a stable diffusion layer of electrochemically produced species and tip-substrate voltammetry was used for the detection of different ROS species produced during OER at BDD. Hydrodynamic SECM imaging in substrate generation/tip collection mode revealed local differences in the production of the ROS species across the BDD electrode surface.

• 出版日期2018-8-10
• 单位UNESCO