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Zinc-Sponge Battery Electrodes that Suppress Dendrites
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通过使用多功能化剂来诱导 Zn (002) 平面的偏好增长,以实现高度可逆的 Zn 阳极
Xi Li1, Zhenjie Chen1, Pengchao Ruan2
1Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering, Changsha University of Science and Technology, Changsha 410004, China.
Nanoscale
|January 17, 2024
概括
添加酸稳定了水性离子电池 (AZIB) 中的阳极,防止了树的生长,并改善了循环寿命,以实现更安全,更大规模的能源存储.
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) 对电网规模的能源存储具有前景.
- Zn树突的生长和界面的副作用限制了AZIB的性能.
- 稳定阳极对于实际的AZIB应用至关重要.
研究的目的:
- 开发一种具有成本效益的添加剂,用于稳定AZIB中的阳极.
- 为了研究由糖酸盐抑制树的机制.
- 为了评估AZIBs的电化学性能提升.
主要方法:
- 将糖酸盐 (SG) 纳入轻度酸性电解质中.
- 电化学测试Zn的对称细胞和Zn的NNH4V4O10全细胞.
- 理论计算以了解 SG 与 Zn 阳极的相互作用.
主要成果:
- SG添加剂在 (002) 平面上促进平面 Zn 的生长,抑制树突.
- 基基Zn细胞表现出延长的循环稳定性 (2000小时在1mA cm−2).
- 完整的电池在2000个循环后保持了95%的容量,库伦比效率高.
结论:
- 葡萄酸有效地稳定了AZIB中的Zn阳极.
- SG添加剂提供了一种可行的策略,以提高AZIB的性能和安全性.
- 这种方法为先进的储能系统提供了具有成本效益的解决方案.
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