In situ XANES & XRD Study of interphasial reaction between uncharged Li2FeSiO4 cathode and LiPF6-based electrolyte. (May 2016)

• Record Type: Journal Article
• Authors: Arthur, Z; Chiu, H C; Lu, X; Chen, N; Emond, V; Demopoulos, G P; Jiang, D T
• Is Part Of: Journal of physics. Volume 712(2016)
• Publication Date: 2016-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/712/1/012124
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In situ synchrotron radiation XANES and XRD have been carried out on Li2 FeSiO4 cathode material in a lithium-ion-battery (LIB) cell. The evolution of the long range lattice structure and the local iron oxidation state has been observed at a charging rate of C/20 for the formation cycle for one Lithium extraction; additional ex situ measurements of the pristine cathode material were taken for comparison. The observed spontaneous interaction between the cathode and the fluorinated electrolyte and the impact of subsequent cycling are discussed.