A Supramolecular Electrolyte for Lithium-Metal Batteries

Jin Xie, Bo Quan Li, Yun Wei Song, Hong Jie Peng, Qiang Zhang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

16 引用 (Scopus)

摘要

Lithium-metal batteries are regarded as one of the most promising energy storage systems, but they suffer from safety and stability problems owing to unstable liquid electrolytes. To solidify the electrolyte is an effective strategy to promote the strength and stability of the electrolyte-electrode interfaces. However, solidified electrolytes are commonly inferior in bulk and interfacial ion conductivity, rendering unsatisfactory battery performances. Herein, a novel supramolecular electrolyte with high bulk and interfacial ion conductivity is proposed for Li-metal batteries. Supramolecular interactions with oriented assembly and moderate bonding energies endow the lithium-ion transport with low resistance. Additional advantages of flexibility and plasticity improve the interfacial properties. Consequently, the prototype supramolecular electrolyte affords a promising bulk lithium-ion conductivity of 2.9×10−4 S cm−1, comparable interfacial resistance of 60 Ω, and a low polarity of 152 mV at 0.2 C in LiFePO4 half-cells at room temperature (25 °C). The supramolecular electrolyte provides not only a new family of electrolyte, but also an effective strategy to promote ion transportation and reduce the interfacial resistance of lithium-based energy storage systems.

源语言英语
页(从-至)47-51
页数5
期刊Batteries and Supercaps
3
1
DOI
出版状态已出版 - 1 1月 2020
已对外发布

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