Mansour, A. N. Badway, F. Yoon, W-S. Chung, K. Y. Amatucci, G. G. 2024-01-20T18:03:47Z 2024-01-20T18:03:47Z 2021-09-04 2010-12 0022-4596 https://pubs.kist.re.kr/handle/201004/130889 We have used X-ray absorption spectroscopy at the Cu K-edge to investigate the electrochemical conversion reaction of 20 nm size 85 wt% CuF2-15 wt% MoO3 nanocomposite under in situ conditions. The nanocomposite was prepared by high energy milling. Upon discharge, the lithiation reaction with the nanocomposite resulted in the formation of nanophase metallic Cu, which is consistent with the conversion of CuF2 into Cu and LiF. Based on XANES and Fourier transforms of EXAFS spectra, we show that the discharge process proceeded via the formation of highly dispersed Cu particles. Based on the coordination number of the first shell of Cu, the average size of the Cu particles was estimated to be in the 1-3 nm range in the fully discharged state. (c) 2010 Elsevier Inc. All rights reserved. English ACADEMIC PRESS INC ELSEVIER SCIENCE NEAR-EDGE-STRUCTURE FLUORIDE NANOCOMPOSITES REVERSIBLE FORMATION METAL FLUORIDES LITHIUM CU SIZE DIFFRACTION MORPHOLOGY SCATTERING In situ X-ray absorption spectroscopic investigation of the electrochemical conversion reactions of CuF2-MoO3 nanocomposite Article 10.1016/j.jssc.2010.09.029 1 JOURNAL OF SOLID STATE CHEMISTRY, v.183, no.12, pp.3029 - 3038 JOURNAL OF SOLID STATE CHEMISTRY 183 12 3029 3038 scie scopus 000285431100040 2-s2.0-78649836875 Chemistry, Inorganic & Nuclear Chemistry, Physical Chemistry Article NEAR-EDGE-STRUCTURE FLUORIDE NANOCOMPOSITES REVERSIBLE FORMATION METAL FLUORIDES LITHIUM CU SIZE DIFFRACTION MORPHOLOGY SCATTERING Copper fluorides Conversion reactions Energy storage X-ray absorption spectroscopy Redox couple Lithium batteries Nanocomposite