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聚乙烯聚合物具有性位作为高度可逆金属阳极的保护涂层
Mengfan Zhang1, Xuemei Meng1, Xiuting Wu1
1School of Chemistry and Chemistry Engineering, Jishou University, Jishou 416000, PR China.
Journal of colloid and interface science
|February 20, 2024
概括
一种新的聚碳烯聚合物涂层 (PNAQI) 有效地防止水性离子电池 (AZIB) 中的树生长和腐蚀. 这提高了电池的稳定性和周期寿命,为高性能AZIB提供了低成本的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 面临的挑战是由于阳极的不稳定性,而阳极的不稳定性则是由于树突的生长和腐蚀等副作用.
- 这些问题严重限制了AZIB设备的可逆性和长期稳定性.
- 开发用于阳极的保护策略对于推进AZIB技术至关重要.
研究的目的:
- 合成和评估一种新型的聚碳烯聚合物,聚1,4,5,8-甲四碳酸无水化炭胺 (PNAQI),作为AZIB中的阳极的保护涂层.
- 为了研究PNAQI减轻树形成和阳极腐蚀的机制.
- 为了证明AZIB使用PNAQI涂层阳极的性能提升.
主要方法:
- 通过一种简单的溶热方法合成PNAQI,使用1,4,5,8-纳夫他四碳酸二化物 (NTCDA) 和2,6-氨基二 (2,6-DAAQ).
- 使用包括接触角度测量和现场X射线衍射 (XRD) 分析在内的技术进行表征.
- 组装和测试对称的PNAQI@Zn//PNAQI@Zn电池和完整的PNAQI@Zn//NH4V4O10电池,以评估电化学性能.
主要成果:
- PNAQI涂层有效地抑制了阳极上的副作用,这得到了表征研究的证实.
- PNAQI涂层促进了均的沉积,防止了树突的形成.
- 带有PNAQI@Zn阳极的对称细胞在1.0 mA cm-2下表现出超过1000小时的循环寿命,显著超过裸体Zn阳极的性能.
- 使用PNAQI@Zn阳极的全电池显示出优异的容量保留 (96.9 mAh/g在1.0 A/g的1000个循环后).
结论:
- PNAQI作为AZIB中阳极的有效保护层,减轻了关键的不稳定性问题.
- 通过均的分布和抑制副作用反应,PNAQI涂层增强了AZIBs的循环稳定性和可逆性.
- 这项研究提出了一种简单,低成本和有效的战略,用于开发高性能和稳定的水性离子电池.
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