The Role of MgCl 2 as a Lewis Base in ROMgCl–MgCl 2 Electrolytes for Magnesium‐Ion Batteries

Pan, Baofei; Huang, Jinhua; He, Meinan; Brombosz, Scott M.; Vaughey, John T.; Zhang, Lu; Burrell, Anthony K.; Zhang, Zhengcheng; Liao, Chen

doi:10.1002/cssc.201501557

The Role of MgCl ₂ as a Lewis Base in ROMgCl–MgCl ₂ Electrolytes for Magnesium‐Ion Batteries

Journal Article · Wed Feb 03 23:00:00 EST 2016 · ChemSusChem

DOI:https://doi.org/10.1002/cssc.201501557· OSTI ID:1400734

Pan, Baofei ^[1]; Huang, Jinhua ^[1]; He, Meinan ^[1]; Brombosz, Scott M. ^[2]; Vaughey, John T. ^[1]; Zhang, Lu ^[1]; Burrell, Anthony K. ^[1]; Zhang, Zhengcheng ^[1]; ^[1]

Joint Center for Energy Storage Research Chemical Sciences and Engineering Division Argonne National Laboratory Lemont Illinois 60439 USA
Materials Science Division Argonne National Laboratory Lemont Illinois 60439 USA

Abstract

A series of strong Lewis acid‐free alkoxide/siloxide‐based Mg electrolytes were deliberately developed with remarkable oxidative stability up to 3.5 V (vs. Mg/Mg ²⁺ ). Despite the perception of ROMgCl (R=alkyl, silyl) as a strong base, ROMgCl acts like Lewis acid, whereas the role of MgCl ₂ in was unambiguously demonstrated as a Lewis base through the identification of the key intermediate using single crystal X‐ray crystallography. This Lewis‐acid‐free strategy should provide a prototype system for further investigation of Mg‐ion batteries.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1400734

Alternate ID(s):: OSTI ID: 1391706

Journal Information:: ChemSusChem, Journal Name: ChemSusChem Journal Issue: 6 Vol. 9; ISSN 1864-5631

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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The Role of MgCl ₂ as a Lewis Base in ROMgCl–MgCl ₂ Electrolytes for Magnesium‐Ion Batteries