浓度在非水锂基电池电解质溶液中的作用。

Fraunhofer R&D Center Electromobility, Fraunhofer Institute for Silicate Research, Neunerplatz 2, 97082, Würzburg, Germany.

Chair of Chemical Technology of Materials Synthesis, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070, Würzburg, Germany.

Nat Commun. 2022 Sep 6;13(1):5250. doi: 10.1038/s41467-022-32794-z.

The main components and, most notably, the concentration of the non-aqueous electrolyte solution have not significantly changed since the commercialization of Li-ion batteries in the early 1990s. However, the quest for electrochemical energy storage systems with high-energy content has driven researchers to reconsider the suitability of the “standard” one molar concentration and look toward highly concentrated electrolyte solutions. However, the interplay between the fundamental electrolyte properties and the cell performance is not consistent with what would be expected based only on the electrolyte ionic conductivity. Here, the recent progress and future perspectives on the correlation between the physicochemical properties of non-standard electrolyte solutions and their ability to improve the energy storage performances of lithium-based batteries are discussed.

自20世纪90年代初锂离子电池商业化以来，非水电解质溶液的主要成分，尤其是其浓度，并未发生显著变化。然而，对具有高能量含量的电化学储能系统的追求促使研究人员重新考虑“标准”的一摩尔浓度是否合适，并将目光投向高浓度电解质溶液。然而，基本电解质性质与电池性能之间的相互作用并不符合仅基于电解质离子电导率所预期的情况。在此，讨论了非标准电解质溶液的物理化学性质与其改善锂基电池储能性能能力之间相关性的最新进展和未来展望。