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Abstract <p>The composition of solvate complexes of LiClO<sub>4</sub>, LiSO<sub>3</sub>CF<sub>3</sub>, LiN(SO<sub>2</sub>CF<sub>3</sub>)<sub>2</sub>, LiBF<sub>4</sub>, and LiPF<sub>6</sub> with sulfolane formed from lithium salt solutions at 40, 50, 60, and 70°C has been studied by vacuum gravimetry method. It has been shown that the composition of the solvate complexes is determined by the temperature of their formation and the nature of the lithium salt anion. The specific ion conductivity of the solvate complexes has been in the range of 0.4–1.8×10<sup>–3</sup> S/cm, and the cationic conductivity has been in the range of 0.3–0.8×10<sup>–3</sup> S/cm. The sulfolane-based solvate complexes have exhibited high thermal stability (&gt;320°C) and have existed in the liquid state over a wide temperature range.</p>

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Solvate Complexes of Lithium Salts with Sulfolane as Electrolytes for Advanced Energy Storage Devices

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • A. A. Savvina,
  • S. E. Mochalov,
  • E. V. Karaseva,
  • V. S. Kolosnitsyn

摘要

Abstract

The composition of solvate complexes of LiClO4, LiSO3CF3, LiN(SO2CF3)2, LiBF4, and LiPF6 with sulfolane formed from lithium salt solutions at 40, 50, 60, and 70°C has been studied by vacuum gravimetry method. It has been shown that the composition of the solvate complexes is determined by the temperature of their formation and the nature of the lithium salt anion. The specific ion conductivity of the solvate complexes has been in the range of 0.4–1.8×10–3 S/cm, and the cationic conductivity has been in the range of 0.3–0.8×10–3 S/cm. The sulfolane-based solvate complexes have exhibited high thermal stability (>320°C) and have existed in the liquid state over a wide temperature range.