Determination of Lithium-Ion Distributions in Nanostructured Block Polymer Electrolyte Thin Films by X‑ray Photoelectron Spectroscopy Depth Profiling
Date
2014-12-19
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
X-ray photoelectron spectroscopy (XPS) depth profiling with C60
þ
sputtering was used to resolve the lithium-ion distribution in the nanometer-scale
domain structures of block polymer electrolyte thin films. The electrolytes of
interest are mixtures of lithium trifluoromethanesulfonate and lamellar-forming
polystyrene poly(oligo(oxyethylene)methacrylate) (PS POEM) copolymer. XPS
depth profiling results showed that the lithium-ion concentration was directly
correlated with the POEM concentration. Furthermore, chemical state and atomic
composition of the film were analyzed through the deconvolution of the C1s signal,
indicating that the lithium ions appear to be uniformly distributed in the POEM domains. Overall, the unique capabilities of C60
þ depth profiling XPS
provide a powerful tool for the analysis of nanostructured polymer thin films in applications ranging from energy storage and generation to surface
coatings and nanoscale templates.
Description
Publisher's PDF.
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Citation
Determination of Lithium-Ion Distributions in Nanostructured Block Polymer Electrolyte Thin Films by X-ray Photoelectron Spectroscopy Depth Profiling. - ACS Nano. (- 1):- 512.