Fluoroborate ionic liquids as sodium battery electrolytes

Duncan, Dale T.; Piper, Samantha L.; Forsyth, Maria; MacFarlane, Douglas R.; Kar, Mega

doi:10.1039/d3cp03694d

Phys. Chem. Chem. Phys.

2023

DOI: 10.1039/d3cp03694d

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Fluoroborate ionic liquids as sodium battery electrolytes

Dale T. Duncan,

Samantha L. Piper,

Maria Forsyth

et al.

Abstract: Fluoroborate ionic liquids have emerged as promising electrolyte materials for next-generation high-voltage sodium batteries.

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2024

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Cited by 3 publications

References 75 publications

(146 reference statements)

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Fluorine Rich Borate Salt Anion Based Electrolyte for High Voltage Sodium Metal Battery Development

Lohani,

Duncan,

Qin

et al. 2024

Small

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This study demonstrates the enhanced performance in high‐voltage sodium full cells using a novel electrolyte composition featuring a highly fluorinated borate ester anion (1 M Na[B(hfip)4].3DME) in a binary carbonate mixture (EC:EMC), compared to a conventional electrolyte (1 M Na[PF6] EC:EMC). The prolonged cycling performance of sodium metal battery employing high voltage cathodes (NVPF@C@CNT and NFMO) is attributed to uniform and dense sodium deposition along with the formation of fluorine and boron‐rich solid electrolyte interphase (SEI) on the sodium metal anode. Simultaneously, a robust cathode electrolyte interphase (CEI) is formed on the cathode side due to the improved electrochemical stability window and superior aluminum passivation of the novel electrolyte. The CEIs on high‐voltage cathodes are discovered to be abundant in C‐F, B‐O, and B‐F components, which contributes to long‐term cycling stability by effectively suppressing undesirable side reactions and mitigating electrolyte decomposition. The participation of DME in the primary solvation shell coupled with the comparatively weaker interaction between Na+ and [B(hfip)4]− in the secondary solvation shell, provides additional confirmation of labile desolvation. This, in turn, supports the active participation of the anion in the formation of fluorine and boron‐rich interphases on both the anode and cathode.

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Fluorine Rich Borate Salt Anion Based Electrolyte for High Voltage Sodium Metal Battery Development

Lohani,

Duncan,

Qin

et al. 2024

Small

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An overview of the ionic liquids and their hybrids operating in electrochemical cells and capacitors

Pereira,

Souza,

Moreira

et al. 2024

Ionics

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The present work of review is focused on the recent advancements regarding the exploration of the ionic liquids, ionic liquids with the incorporation of nanoparticles of several materials, and ionic liquid-grafted nanoparticles operating as liquid electrodes in electrochemical cells and capacitors. The ionic liquids are generally synthesized at room temperature and by adding a solution, which can be an acid, a base, or a salt in water, and are composed of organic cations and a great number of charge-delocalized organic/inorganic anions. The electrochemical features such as the electrical conductivity and capacitance of the promising ionic liquids and their hybrids are addressed thoroughly, together with their influencing factors like the nature, concentration, and functionalization of the nanoparticles, type of base fluids, working temperature, and addition of surfactants. Moreover, this overview identifies and discusses the main applications of ionic liquids and their hybrids with nanoparticles in various possible electrochemical device configurations, along with a brief evaluation of the associated feasibility issues. Additionally, this survey of the published scientific papers on the subject enabled the listing and evaluation of the beneficial features related to the usage of these fluids including enhanced electrical conductivity and improved capacitance in comparison with the commonly employed solvents and electrolytes. Finally, it addresses the main problems associated with such types of fluids and outlines the primary prospects for further research and use of ionic liquids and their nanocomposites in different electrochemical technological applications.

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Light-assisted rechargeable zinc-air battery: Mechanism, progress, and prospects

Chen,

Luo,

Xiang

et al. 2024

Journal of Energy Chemistry

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Fluoroborate ionic liquids as sodium battery electrolytes

Abstract: Fluoroborate ionic liquids have emerged as promising electrolyte materials for next-generation high-voltage sodium batteries.

Cited by 3 publications

References 75 publications

Fluorine Rich Borate Salt Anion Based Electrolyte for High Voltage Sodium Metal Battery Development

Fluorine Rich Borate Salt Anion Based Electrolyte for High Voltage Sodium Metal Battery Development

An overview of the ionic liquids and their hybrids operating in electrochemical cells and capacitors

Light-assisted rechargeable zinc-air battery: Mechanism, progress, and prospects

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