Fig. 2: Operando electrochemical IR spectroscopy on Ti3C2Tx electrodes.
From: Vibrational signature of hydrated protons confined in MXene interlayers
a, b FTIR difference spectra measured during electrochemical cycling in 0.1 M H2SO4 (a) and 0.5 M H2SO4 (b). The spectrum recorded at 0 V is subtracted from subsequent spectra. Spectra are offset for clarity. c, d Peak fit of difference spectrum at −600 mV in 0.1 M H2SO4 (c) and 0.5 M H2SO4 (d). The fit components are numbered from one to seven and the numbers are displayed below the components. Each component was labelled with a different colour for clarity. e Integrated peak areas from the fit as a function of potential, with peak numbers corresponding to the numbering in c, d. f CVs recorded during operando FTIR measurements.
