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在现场形成的坚固固体电解质间相与有机-无机混合层,用于稳定的 Zn 金属阳极
Congjian Lin1, Tian Chen Li1, Pinji Wang1,2
1Pillar of Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.
Small methods
|April 16, 2024
概括
在硫酸电解质中添加的二甲基硫氧化物 (DMSO) 稳定了阳极接口,防止了树岩的形成. 这使离子电池能够保持超过8500小时的稳定循环.
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:
- 稳定阳极/电解质接口对于开发先进的水性离子电池至关重要.
- 寄生反应和树突的形成阻碍了阳极的可逆性和寿命.
研究的目的:
- 调查二甲基硫氧化物 (DMSO) 作为硫酸盐 (ZS) 电解质添加剂的作用,以稳定 Zn 阳极.
- 通过电解质工程提高水性离子电池的性能和循环寿命.
主要方法:
- 在基线硫酸电解质中加入2体积%的DMSO.
- 制造和测试Zn的对称电池,以评估阳极稳定性.
- 组装和循环Zn下载VS2全电池,以评估电池的整体性能.
主要成果:
- 添加DMSO有助于在阳极上形成强大的固体电解质介相 (SEI),促进均沉积.
- 对称的Zn细胞表现出超过8500小时的异常循环寿命,在0.5mA cm-2.
- 完整电池ZngadgadgadgadgadgadgadVS2实现了1.7 mAh cm-2的高面积容量,并在苛刻的条件下保持了超过1000个周期的稳定性.
结论:
- 使用DMSO的电解质工程是现场SEI设计和 Zn阳极稳定的一个有效策略.
- 这种方法显著提高了水性离子电池的电化学性能和长期循环能力.
- 这些发现为推进高性能和持久的基于的储能系统提供了宝贵的见解.
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