Regulating Ion-Dipole Interactions in Weakly Solvating Electrolyte towards Ultra-Low Temperature Sodium-Ion Batteries,Angewandte Chemie International Edition

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Regulating Ion-Dipole Interactions in Weakly Solvating Electrolyte towards Ultra-Low Temperature Sodium-Ion Batteries
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2024-02-08 , DOI: 10.1002/anie.202400539
Hengyi Fang ₁ , Yaohui Huang ₁ , Wei Hu ₁ , Zihao Song ₁ , Xiangshuai Wei ₁ , Jiarun Geng ₁ , Zhuoliang Jiang ₁ , Heng Qu ₁ , Jun Chen _{1,

2} , Fujun Li _{1,

2}

Affiliation

The weakly solvating electrolyte is formulated with 2 -methyltetrahydrofuran and tetrahydrofuran to decrease the ion-dipole interactions. Its anion-enhanced solvation structures facilitate stable sodium storage in hard carbon anode at ultra-low temperatures. The full cell paired with NVP cathode operates over 250 stable cycles with high capacity retention of ~100 % at 50 mA g⁻¹ at −40 °C.

中文翻译：

调节弱溶剂电解质中的离子偶极子相互作用以实现超低温钠离子电池

弱溶剂化电解质由2-甲基四氢呋喃和四氢呋喃配制以减少离子-偶极子相互作用。其阴离子增强溶剂化结构有助于在超低温下在硬碳阳极中稳定储存钠。与 NVP 阴极配对的全电池可稳定运行超过 250 个循环，在 -40 °C 下 50 mA g ^-1时容量保持率高达约 100 %。

更新日期：2024-02-08

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