基于瓦纳达特的Fe-MOF作为混合超级电容器设备的有希望的负电极
Yuting Wang1, Wenjie Lu1, Lianchao Wang1
1Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
Nanotechnology
|January 10, 2024
概括
本研究介绍了超级电容器负电极的新型石墨烯氧化物 (GO) 和金属有机框架 (MOF) 复合材料. 由于协同效应,GO/Fe-VO4-BIPY材料表现出增强的性能,实现了高能量密度.
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:
- 超级电容器负电极主要使用碳基材料.
- 金属有机框架 (MOF) 作为超级电容器的负极材料尚未得到充分研究.
研究的目的:
- 合成和描述基于石墨烯氧化物 (GO) 和基于瓦纳酸盐的Fe-有机框架 (Fe-VO4-BIPY) 的新型复合材料.
- 研究基于聚氧甲酸盐的金属有机框架 (POMOFs) 沉积在石墨烯上的作用,以提高超级电容器的性能.
主要方法:
- 对GO/Fe-VO4-BIPY复合材料的水热合成.
- 调整POMOF的内容以控制石墨烯上的沉积和分散.
- 超级电容器性能的电化学表征.
主要成果:
- GO/Fe-VO4-BIPY-1复合物在0.5 A g-1下表现出 190 F g-1 的特定电容,这归因于协同法拉第反应和电双层电容.
- 与原始的Fe-VO4-BIPY相比,复合物显示出更高的表面积和氧化还原反应场所.
- 一个装配的超级电容器在850W kg-1.1,达到46.84Wh kg-1的最大能量密度.
结论:
- 开发的GO/Fe-VO4-BIPY复合材料为超级电容器应用提供了增强的电化学性能.
- 在提高电荷存储能力方面,GO和POMOF之间的协同效应至关重要.
- 这些材料代表了传统的基于碳的负电极的有希望的替代品.
更多相关视频
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
4.5K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.0K
相关概念视频
01:25MOS Capacitor
786
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
786
03:12Batteries and Fuel Cells
27.4K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.4K