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乙胺 - - 卡普罗拉克塔姆深度欧性溶剂基电解质,用于稳定的金属电池.
Shihe Wang1, Ganxiong Liu1, Wang Wan1
1School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China.
Advanced materials (Deerfield Beach, Fla.)
|October 6, 2023
概括
在水性离子电池中,一种新型的深溶性溶解剂抑制了水的反应性,防止了树石的形成和腐蚀. 这提高了电池的稳定性和电网规模储能效率.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 对电网规模的储能充满希望,但面临诸如进化和阳极副产品形成等挑战.
- 这些问题限制了传统AZIB的电化学稳定性和寿命.
研究的目的:
- 为AZIBs开发一种新的电解质,可以抑制水的反应性并改善阳极性能.
- 为了增强电化学电压稳定性窗口,并防止树脂石的形成和腐蚀.
主要方法:
- 在水性电解质中重建键,使用由乙胺和甲组成的深度欧性共溶剂 (DES).
- 溶解结构的特征及其对沉积的影响.
- 化/剥离性能和长期循环稳定性的测试在一个Zn下载VS2全细胞中.
主要成果:
- 基于DES的电解质有效抑制了水的反应性,扩大了电化学电压稳定性窗口.
- 独特的溶解结构促进了晶体的偏好的 (002) 平面生长,抑制了树岩的形成,并确保了均的沉积.
- 在阳极表面形成的保护膜减少了腐蚀,导致库伦比克效率从78.18%提高到98.37%.
- 在500个循环后,全细胞Zn下载者VS2表现出增强的稳定性,容量保持率为85.4%.
结论:
- 开发的基于DES的电解质为稳定高效的水性离子电池提供了一个有前途的解决方案.
- 这种方法有效地解决了AZIB的关键挑战,为改进的电网规模储能应用铺平了道路.
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