An electrochemical cell for 2-dimensional surface optical reflectance during anodization and cyclic voltammetry

W Linpé; G S Harlow; A Larsson; G Abbondanza; L Rämisch; S Pfaff; J Zetterberg; J Evertsson; E Lundgren

doi:10.1063/1.5133905

An electrochemical cell for 2-dimensional surface optical reflectance during anodization and cyclic voltammetry

Rev Sci Instrum. 2020 Apr 1;91(4):044101. doi: 10.1063/1.5133905.

Authors

W Linpé¹, G S Harlow¹, A Larsson¹, G Abbondanza¹, L Rämisch², S Pfaff², J Zetterberg², J Evertsson³, E Lundgren¹

Affiliations

¹ Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden.
² Division of Combustion Physics, Lund University, SE-22100 Lund, Sweden.
³ Hydro Extruded Solutions AB Innovation & Technology, Finspång, Sweden.

PMID: 32357721
DOI: 10.1063/1.5133905

Abstract

We have developed an electrochemical cell for in situ 2-Dimensional Surface Optical Reflectance (2D-SOR) studies during anodization and cyclic voltammetry. The 2D-SOR signal was recorded from electrodes made of polycrystalline Al, Au(111), and Pt(100) single crystals. The changes can be followed at a video rate acquisition frequency of 200 Hz and demonstrate a strong contrast between oxidizing and reducing conditions. Good correlation between the 2D-SOR signal and the anodization conditions or the cyclic voltammetry current is also observed. The power of this approach is discussed, with a focus on applications in various fields of electrochemistry. The combination of 2D-SOR with other techniques, as well as its spatial resolution and sensitivity, has also been discussed.