将宽电压窗口和高能量密度与非对称全固态超级电容器协调一致
Gang Zhao1, Huanchi Chen1, Bingzhe Jia1
1School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|December 18, 2024
概括
这项研究开发了用于全固态超级电容器的先进电极材料,为实际应用显著提高了能量密度和电压窗口.
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:
- 全固态超级电容器提供安全性和稳定性,但由于有限的电压窗口,其能量密度较低.
- 提高电压窗口对于超级电容器的实际应用至关重要.
研究的目的:
- 合成全固态不对称超级电容器 (ASC) 的新型电极材料.
- 改进ASC的能量密度和电压窗口,以提高性能.
主要方法:
- 通过电化学沉积涂层合成CC/MoO3@Ti3C2Tx负电极.
- 准备的Mo1Al1-MnO2/CC正电极使用一阶段的热水法.
- 使用开发的电极组装了一个不对称的超级电容器装置.
主要成果:
- 实现了1685.5mF cm−2 (正) 和1134.98mF cm−2 (负) 电极的高表面容量.
- 证明了组装ASC的2.2V的广泛潜在窗口.
- 获得0.44 mW h cm-2的能量密度,超过了类似的超级电容器设备.
结论:
- 在MoO3伪电容性和Ti3C2Tx导电性之间的协同效应提高了性能.
- 在MnO2中对Mo和Al的双金属兴奋剂改善了电子流动性和离子扩散,提高了ASC的性能.
- 开发的ASC显示了高性能储能应用的巨大潜力.
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