Premium
Solvate Ionic Liquids for Li, Na, K, and Mg Batteries
Author(s) -
Mandai Toshihiko,
Dokko Kaoru,
Watanabe Masayoshi
Publication year - 2019
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.201800111
Subject(s) - electrolyte , ionic liquid , electrochemistry , battery (electricity) , thermal stability , raman spectroscopy , ionic bonding , inorganic chemistry , ion , materials science , chemistry , electrode , chemical engineering , organic chemistry , catalysis , thermodynamics , physics , power (physics) , optics , engineering
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.