Operando XAS measurements of electrochemical reactions in solutions

For the operando XAS measurements of electrochemical reactions, the electrochemical cell including working, counter, and reference electrodes were developed [1, 2]. The Fe L-edge XAS spectra of aqueous iron sulfate solutions were successfully measured at different potentials with a scan rate of 100 mV/s. The mechanisms of the Fe redox reactions with the change in valence of Fe ions were discussed by correlating the results of cyclic voltammetry with the same scan rates.

  1. M. Nagasaka et al., J. Phys. Chem. C 117, 16343 (2013).
  2. M. Nagasaka et al., Rev. Sci. Instrum. 85, 104105 (2014).