Chemometric analysis of X-ray absorption spectra helps understanding of Li battery

Dr. M. Giorgetti (University of Bologna and Unita di Ricerca INSTM di Bologna) and his colleagues recently reported the successful application of the chemometric approach to a series of in-situ near edge X-ray absorption spectra of a Cu_0.1V₂O₅ xerogel/Li ion battery. The research group discusses how the multivariate curve resolution (MCR) technique and also fixed size windows evolving factor analysis (FSWEFA) are useful in determining the number of species and the ratio. It was found that three different species co-exist during battery charging. For more information, see the paper, "Multivariate Curve Resolution Analysis for Interpretation of Dynamic Cu K-Edge X-ray Absorption Spectroscopy Spectra for a Cu Doped V₂O₅ Lithium", P. Conti et al., Anal. Chem., Article ASAP (DOI: 10.1021/ac902865h)