| 许月圆，黄玉豪*.基于十四烷基盐表面活性剂的“盐包水”型电解液
及其电化学性能[J].海南师范大学学报自科版,2025,38(3):326-331 |
| 基于十四烷基盐表面活性剂的“盐包水”型电解液
及其电化学性能 |
| "Water-in-Salt" Electrolyte Based on Tetradecyl Salt Surfactant and Its Electrochemical Performance |
| |
| DOI：10.12051/j.issn.1674-4942.2025.03.010 |
| 中文关键词: 十四烷基盐 “盐包水”型电解液 电化学性能 水系电池 |
| 英文关键词: tetradecyl salt "water-in-salt" electrolyte electrochemical performance aqueous battery |
| 基金项目:海南省自然科学基金高层次人才项目（224RC504） |
|
| 摘要点击次数: 244 |
| 全文下载次数: 160 |
| 中文摘要: |
| 使用“盐包水”型电解液可通过抑制水的活性实现水溶液宽电化学稳定窗口。由于水
系电池中的金属盐电解液对环境造成了一定的影响，本文提出了一种基于十四烷基盐表面活性剂
的“盐包水”型电解液，探究了不同浓度十四烷基三甲基氯化铵（TTAC）和十四烷基三甲基溴化铵
（TTAB）的电导率和电化学稳定窗口，并对1.83 mol/kg TTAC和2.38 mol/kg TTAB进行拉曼光谱表征
和循环伏安（CV）测试。结果表明，1.83 mol/kg 饱和 TTAC 的电化学稳定窗口比 2.38 mol/kg 饱和
TTAB的大，说明TTAC“盐包水”型电解液比TTAB更稳定，并且从CV测试可知，氧化峰与还原峰曲
线不对称，说明电极反应不可逆。这表明了纯的十四烷基盐表面活性剂作为电解液不能给电极反
应带来优势，但有作为介质的潜力。 |
| 英文摘要: |
| "Water-in-salt" electrolyte can achieve a wide electrochemical stability window in aqueous solutions by suppressing
the activity of water. As metal salt electrolyte in aqueous batteries has a certain impact on environment, this work proposed a "wa⁃
ter-in-salt" electrolyte based on tetradecyl salt surfactant. The conductivity and electrochemical stability window of tetradecyltri⁃
methylammonium chloride (TTAC) and tetradecyltrimethylammonium bromide (TTAB) at different concentrations were explored.
Raman spectroscopy characterization and cyclic voltammetry(CV) tests on 1.83 mol/kg TTAC and 2.38 mol/kg TTAB were car⁃
ried out as well. The results showed that the electrochemical stability window of 1.83 mol/kg saturated TTAC was larger than that
of 2.38 mol/kg saturated TTAB, suggesting that the TTAC "water-in-salt" electrolyte was more stable than TTAB. The CV tests
revealed that the oxidation and reduction peaks were asymmetric, indicating the reaction was irreversible. The pure tetradecyl
salt surfactant cannot offer advantages to the electrode reaction as an electrolyte, but they have potential as a medium. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
