MgPF₆₂-Based Electrolyte Systems: Understanding Electrolyte-Electrode Interactions for the Development of Mg-Ion BatteriesReportar como inadecuado


MgPF₆₂-Based Electrolyte Systems: Understanding Electrolyte-Electrode Interactions for the Development of Mg-Ion Batteries


MgPF₆₂-Based Electrolyte Systems: Understanding Electrolyte-Electrode Interactions for the Development of Mg-Ion Batteries - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Publication Date: 2016-07-20

Journal Title: Journal of the American Chemical Society

Publisher: American Chemical Society

Volume: 138

Issue: 28

Pages: 8682-8685

Language: English

Type: Article

This Version: AM

Metadata: Show full item record

Citation: Keyzer, E., Glass, H., Liu, Z., Bayley, P., Dutton, S. E., Grey, C. P., & Wright, D. S. (2016). Mg(PF₆)₂-Based Electrolyte Systems: Understanding Electrolyte-Electrode Interactions for the Development of Mg-Ion Batteries. Journal of the American Chemical Society, 138 (28), 8682-8685. https://doi.org/10.1021/jacs.6b04319

Abstract: Mg(PF₆)₂-based electrolytes for Mg-ion batteries have not received the same attention as the analogous LiPF₆-based electrolytes used in most Li-ion cells owing to the perception that the PF₆-anion decomposes on and passivates Mg electrodes. No synthesis of the Mg(PF₆)₂ salt has been reported, nor have its solutions been studied electrochemically. Here, we report the synthesis of the complex Mg(PF₆)₂(CH₃CN)₆ and its solution-state electrochemistry. Solutions of Mg(PF₆)₂(CH₃CN)₆ in CH₃CN and CH₃CN/THF mixtures exhibit high conductivities (up to 28 mS·cm‾¹) and electrochemical stability up to at least 4 V vs Mg on Al electrodes. Contrary to established perceptions, Mg electrodes are observed to remain electrochemically active when cycled in the presence of these Mg(PF₆)₂-based electrolytes, with no fluoride (i.e., MgF₂) formed on the Mg surface. Stainless steel electrodes are found to corrode when cycled in the presence of Mg(PF₆)₂ solutions, but Al electrodes are passivated. The electrolytes have been used in a prototype Mg battery with a Mg anode and Chevrel (Mo₃S₄)-phase cathode.

Sponsorship: E.N.K. thanks NSERC for a PGS D as well as the Cambridge Commonwealth, European, and International Trust and Gonville and Caius College for funding. This work was supported by the EPSRC Cambridge NanoDTC, EP/G037221/1.

Identifiers:

External DOI: https://doi.org/10.1021/jacs.6b04319

This record's URL: https://www.repository.cam.ac.uk/handle/1810/263533



Rights:

Licence:

http://www.rioxx.net/licenses/all-rights-reserved





Autor: Keyzer, EvanGlass, HFJ Liu, ZigengBayley, PM Dutton, Sian ElizabethGrey, Clare PhilomenaWright, Dominic Simon

Fuente: https://www.repository.cam.ac.uk/handle/1810/263533



DESCARGAR PDF




Documentos relacionados