尼古丁胺胺添加剂的界面调制使9700小时的 Zn 金属电池成为可能
Nan Jiang1, Jinlin Zhu1, Chang Li1
1School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
Journal of colloid and interface science
|August 8, 2024
概括
尼古丁胺胺添加剂可以防止水性离子电池 (AZIB) 中的树突. 这提高了电池的寿命和稳定性,使得储能解决方案更安全,更有效.
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) 提供安全性和环保性,但受到阳极树突和副作用的影响.
- 这些问题限制了它们的实际应用和周期寿命.
研究的目的:
- 研究尼古丁胺 (NIC) 作为一种低成本的电解质添加剂,用于稳定AZIB中的阳极.
- 为了提高阳极的可逆性和循环稳定性.
主要方法:
- 在AZIBs的电解质中添加1重%的尼古丁胺 (NIC).
- 电化学测试Zn的对称细胞和NaVO的完整细胞.
- 对 Zn 阳极接口修改和 Zn2+ 溶解结构的分析.
主要成果:
- NIC添加剂有效调节了Zn阳极接口,抑制了树突的形成.
- 有NIC的对称细胞的寿命超长 (>9700小时在1 mA cm-2),比没有NIC的寿命长808倍.
- 在1000个循环后,NIC带的NaVO的完整电池表现出90.3%的容量保留率 (99.9%的库伦比效率),相比之下,只有42个循环没有NIC.
结论:
- 尼古丁胺是AZIB中稳定阳极的高效添加剂.
- 这一策略显著提高了电池的性能和寿命,为实际的AZIB应用铺平了道路.
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