电解质
储能
钠
电化学
材料科学
电池(电)
化学工程
溶解
无机化学
电极
化学
冶金
工程类
物理
物理化学
功率(物理)
量子力学
作者
Xiangyang Xu,Kui Lin,Dong Zhou,Qi Liu,Xianying Qin,Shuwei Wang,Shun He,Feiyu Kang,Baohua Li,Guoxiu Wang
出处
期刊:Chem
[Elsevier]
日期:2020-04-01
卷期号:6 (4): 902-918
被引量:147
标识
DOI:10.1016/j.chempr.2020.01.008
摘要
Dual-ion sodium metal||graphite batteries are a viable technology for large-scale stationary energy storage because of their high working voltages (above 4.4 V versus Na/Na+) and the low cost of electrode materials. However, traditional liquid electrolytes generally suffer from severe decomposition at such a high voltage, which results in poor cycle life. Herein, we report a stable dual-ion sodium metal battery employing a multifunctional gel polymer electrolyte, which was facilely prepared by in situ polymerizing an ethoxylated pentaerythritol tetraacrylate monomer in an optimized liquid electrolyte with fluoroethylene carbonate as co-solvent and 1,3-propanesultone as additive. This quasi-solid-state electrolyte not only exhibits high oxidative resistance and constructs stable protective layers on the electrode surfaces but also effectively facilitates homogeneous anion and cation fluxes and suppresses the sodium dendrite growth. The as-developed quasi-solid-state dual-ion batteries delivered a high capacity with long cycle life, which could be applied for low-cost energy storage.
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