Ionic Interaction Effects on the Structure and Dynamics of Orthoborate Ionic Materials
Journal article, 2024

A series of orthoborate-based ionic materials of bis(glycolato)borate ([BGB]) and bis(ethylene-1,2-dioxy)borate anions ([BEDB]) coupled with tetrabutylphosphonium ([P4444]) and tetrabutylammonium ([N4444]) cations have been synthesized, and their physicochemical properties are characterized. The ionic materials based on the most popular orthoborate anion, bis(oxalato)borate anion ([BOB]), which contains four carbonyl groups, are all liquid at ambient temperature, while the bis(glycolato)borate ([BGB]) anion, with two carbonyl groups, and the bis(ethylene-1,2-dioxy)borate ([BEDB]) anion, without carbonyl groups, render solids at ambient temperature. The ionic materials based on the [BGB] anion display the highest decomposition temperatures, and those based on the BEDB anion are the lowest. The [P4444][BGB], [P4444][BEDB], and [N4444][BEDB] salts feature significantly wider plastic phase I temperature ranges than their analogues. FTIR spectroscopy, multinuclear (15N, 31P, 13C, and 11B) solid-state NMR spectroscopy, and single-crystal X-ray diffraction were all used to unveil the ionic interactions and structural features, which display weaker ionic interactions for [BEDB] compared to [BGB] when bearing the same cation and present relatively higher crystallinity of [P4444][BGB] among the ionic materials.

Author

Yanqi Xu

Luleå University of Technology

Anders Reinholdt

Lund University

Oleg N. Antzutkin

Luleå University of Technology

Maria Forsyth

Deakin University

Patrik Johansson

Centre national de la recherche scientifique (CNRS)

Chalmers, Physics, Materials Physics

Faiz Ullah Shah

Luleå University of Technology

Crystal Growth & Design

1528-7483 (ISSN) 1528-7505 (eISSN)

Vol. In Press

Next Generation Batteries

Swedish Research Council (VR) (2021-00613), 2021-12-01 -- 2032-12-31.

Biomass Derived Fluorine-Free Ionic Liquids Based Electrolytes Enabling Sustainable Batteries (BioSusBat)

Formas (2020-00969), 2021-01-01 -- 2024-12-31.

Subject Categories

Physical Chemistry

DOI

10.1021/acs.cgd.4c01030

More information

Latest update

10/30/2024