碳酸乙烯酯
电解质
电池(电)
材料科学
阳极
无机化学
聚合物
化学工程
离子电导率
电镀(地质)
碳酸二甲酯
电极
化学
有机化学
复合材料
功率(物理)
物理
物理化学
量子力学
地球物理学
甲醇
工程类
地质学
作者
Li Zhang,Jing Luo,Xiaoming Bai,Liping Yu,Ming Wang,Guangyu Zhao,Naiqing Zhang
标识
DOI:10.1016/j.electacta.2023.143336
摘要
Aqueous zinc-ion battery (AZIB) is expected to be an alternative energy storage device for lithium-ion batteries because of its advantages of high safety and low cost. However, a series of side reactions on cathodes and anodes caused by aqueous electrolytes still remain to be resolved. Using "solvent-free" solid polymer electrolyte (SPE) can fundamentally settle the above issues. Poly(ethylene carbonate) (PEC), possesses a higher amorphous phase and weaker binding of carbonate groups to Zn2+, is a promising polymer electrolytes. Here, a PEC-based solid electrolyte modified with succinonitrile (SN) is successfully developed, furthermore, in order to improve the interface contact between electrode and electrolyte, the polymer electrolyte is in-situ prepared directly between electrodes. The results indicate that, compared with traditional battery assembling processes, the in-situ method can significantly reduce the interface impedance, which is one tenth of ex-situ SPE. The optimal component's room temperature ionic conductivity is 5.183 × 10–5, the ion transport number is 0.61, and the zinc symmetric battery assembled with it has a stable and highly reversible dendrite-free plating/stripping curves at 0.1 mA cm–2. The all-solid-state in-situ battery assembled with MnO2 and Zn metal can cycle 100 rounds at 0.1 A g–1.
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