Spontaneous reaction between an uncharged lithium iron silicate cathode and a LiPF6-based electrolyte

Zachary Arthur; Hsien-Chieh Chiu; Xia Lu; Ning Chen; Vincent Emond; Karim Zaghib; De-Tong Jiang; George P. Demopoulos

doi:10.1039/C5CC07197F

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Spontaneous reaction between an uncharged lithium iron silicate cathode and a LiPF₆-based electrolyte

Zachary Arthur,^a Hsien-Chieh Chiu,^b Xia Lu,

^b Ning Chen,^c Vincent Emond,^a Karim Zaghib,^d De-Tong Jiang*^a and George P. Demopoulos*^b

Author affiliations

* Corresponding authors

^a Department of Physics, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada
E-mail: djiang@uoguelph.ca

^b Materials Engineering, McGill University, Montreal, QC H3A 0C5, Canada
E-mail: george.demopoulos@mcgill.ca

^c Canadian Light Source, 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada

^d Institut de Recherche d’Hydro-Québec (IREQ), Varennes, QC J3X 1S1, Canada

Abstract

The reaction between an uncharged Li₂FeSiO₄ (LFS) cathode and a LiPF₆-EC/DMC electrolyte is revealed by in situ XANES in coin cells. This study shows clear evidence of delithiation and iron oxidation in LFS prior to cycling. Subsequent cycling appears to partially restore the original lithiation level, an observation that needs to be taken into consideration in future LFS development work.

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Article information

DOI: https://doi.org/10.1039/C5CC07197F
Article type: Communication
Submitted: 27 Aug 2015
Accepted: 22 Oct 2015
First published: 22 Oct 2015
This article is Open Access

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Chem. Commun., 2016,52, 190-193

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Spontaneous reaction between an uncharged lithium iron silicate cathode and a LiPF₆-based electrolyte

Z. Arthur, H. Chiu, X. Lu, N. Chen, V. Emond, K. Zaghib, D. Jiang and G. P. Demopoulos, Chem. Commun., 2016, 52, 190 DOI: 10.1039/C5CC07197F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Chemical Communications

Spontaneous reaction between an uncharged lithium iron silicate cathode and a LiPF₆-based electrolyte

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