共价有机框架衍生氧/硫合的多孔碳,用于坚固的高容量对称超级电容器
Yue Wang1, Jifan Zhao1, Yuzhu Xing1
1School of Chemical Engineering, University of Science and Technology Liaoning, 185 Qianshan Middle Road, High-Tech Zone, Anshan, Liaoning, 114051, China.
我们从共价有机框架为超级电容器开发了双合的多孔碳. 这些材料为先进的储能应用提供高容量和稳定性.
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
- 纳米技术纳米技术
背景情况:
- 异原子合的多孔碳 (HPC) 通过伪电容提高了超级电容器的能量密度.
- 共价有机框架 (COF) 为储能材料提供可调节的结构.
研究的目的:
- 设计和制造氧和硫双化COF衍生的HPC.
- 为了评估它们作为超级电容器的电极材料的性能.
主要方法:
- 简单的合反应合成双合的COF衍生的HPCs.
- 孔隙结构,表面积和异质原子含量的表征.
- 在水性对称超级电容器中进行电化学测试.
主要成果:
- 实现了非常高的异原子含量 (高达25.76原子%).
- 展示了高的特定表面积 (高达2835 m2 g-1).
- 证明了高的特异电容 (430 F g-1 在0.5 A g-1 时) 和出色的循环稳定性 (96.9% 保持在 10,000 个循环后).
- 超级电容器电极显示出高能量密度 (60Wh kg-1) 和稳定性 (82.2%的保留率在10A g-1的10,000个循环后).
结论:
- 来自COF的HPC是高性能超级电容器的一个有希望的战略.
- 使用氧和硫的双重兴奋剂显著增强了电化学特性.
- 这些材料显示出化学能量储存设备的巨大潜力.
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