Solvate Ionic Liquids for Li, Na, K, and Mg Batteries

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Abstract

From the viewpoint of element strategy, non‐Li batteries with promising negative and positive electrodes have been widely studied to support a sustainable society. To develop non‐Li batteries having high energy density, research on electrolyte materials is pivotal. Solvate ionic liquids (SILs) are an emerging class of electrolytes possessing somewhat superior properties for battery applications compared to conventional ionic liquid electrolytes. In this account, we describe our recent efforts regarding SIL‐based electrolytes for Li, Na, K, and Mg batteries with respect to structural, physicochemical, and electrochemical characteristics. Systematic studies based on crystallography and Raman spectroscopy combined with thermal/electrochemical stability analysis showed that the balance of competitive cation−anion and cation−solvent interactions predominates the stability of the solvate cations. We also demonstrated battery applications of SILs as electrolytes for non‐Li batteries, particularly for Na batteries.

This is the peer reviewed version of the following article: [T.Mandai, K.Dokko, M.Watanabe, The Chem. Rec., 2019, 19, 708-722], which has been published in final form at [https://doi.org/10.1002/tcr.201800111]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Journal

  • The Chemical Record

    The Chemical Record 19(4), 708-722, 2019-04

    Wiley

Codes

  • NII Article ID (NAID)
    120006643662
  • NII NACSIS-CAT ID (NCID)
    AA11628208
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1528-0691
  • Data Source
    IR 
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