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通过通过氨基酸电解质添加剂诱导的界面工程实现Zn阳极的高可逆性
Ahmad Naveed1, Teng Li1,2, Amjad Ali1,3
1School of Material Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 3, 2024
概括
氨基酸D-氨酸 (DPA) 通过防止树突和腐蚀,稳定水性电池中的阳极. 这种接口工程提高了阳极的性能,并使更安全,更具成本效益的储能解决方案成为可能.
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) 提供安全性和成本优势,但由于阳极的不稳定性而面临挑战.
- 水驱动的副作用导致树突,被动化和腐蚀,阻碍了AZIB的性能.
- 开发稳定的阳极对于AZIBs的实际实施至关重要.
研究的目的:
- 使用界面修改设计一种高度可逆的阳极.
- 研究D-氨 (DPA) 作为阳极稳定电解质添加剂的作用.
- 为了证明水性电解质中增强的沉积和抑制的副作用.
主要方法:
- 使用D-氨 (DPA) 的阳极/电解质接口的接口工程.
- 在阳极上分析DPA吸附和固体电解质间相 (SEI) 形成.
- 在严峻条件下的电化学测试 (20.0 mA cm-2和10.0 mAh cm-2),以评估涂/脱落效率.
- 在DPA添加和控制电解质之间进行比较性能分析.
主要成果:
- 添加DPA导致优先吸附,并在阳极上形成一个紧的SEI层.
- 实现了控制和均的沉积,抑制了有害的副作用.
- 添加DPA的电解质在严格的测试条件下表现出高稳定性,平均涂层/脱落库伦比克效率为99.37%.
- 在稳定阳极方面,与DPA结合的电解质显著优于控制电解质.
结论:
- 使用D-氨酸的界面工程有效地稳定了水性电解质中的阳极.
- DPA充当了一种多功能添加剂,减轻了树突的形成,提高了库伦比克的效率.
- 这种方法有助于开发稳定的阳极,用于实际的水性可充电电池.
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