FTIR Spectroscopy
Fourier-transform infrared spectroscopy (FTIR) measures the absorption of infrared light by molecular vibrations, producing a fingerprint spectrum that identifies functional groups and chemical bonds in a sample. As a hard skill it requires selecting the appropriate sampling accessory (ATR, transmission, diffuse reflectance), maintaining background and calibration standards, and interpreting complex spectra for mixtures and degradation products. Battery researchers apply FTIR to identify electrolyte decomposition products on electrode surfaces, monitor solid electrolyte interphase composition, and verify the chemical identity and purity of synthesized materials.
