辐射诱导的现场建设2D导电缺陷丰富的金属有机框架,用于高性能超级电容器
Kai Zhang1,2, Xuanzhi Mao3, Wei Yan1,2
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 27, 2025
概括
马射线辐射合成了一种新的基于铜的2D导电金属有机框架 (2D c-MOF) 用于高性能超级电容器 (SC). 与传统合成的MOF相比,这种材料具有更高的电容和能量密度.
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
- 纳米技术 纳米技术
背景情况:
- 2D导电金属有机框架 (2D c-MOF) 是超级电容器 (SC) 的有希望的电极材料,因为它们具有独特的结构特征.
- 这些材料具有有序的1D孔道,2D π 结合层结构和可逆的氧化还原活性位点,使有效的离子和电子运输成为可能.
研究的目的:
- 为了合成一种新的基于Cu的2D c-MOF (Cu-CAT),使用玛射线辐射来提高超级电容器的性能.
- 研究由玛辐射引起的结构变化及其对电化学性质的影响.
- 为了评估辐射合成的Cu-CAT作为超级电容器的电极材料的电容性能和循环稳定性.
主要方法:
- 使用玛射线辐射合成Cu-CAT.
- 合成材料的表征,包括Cu的结晶性,多孔性和性状态.
- 用于超级电容器应用的 Cu-CAT 作为水性电解质中的电极的电化学评估.
主要成果:
- 马射线辐射成功合成了Cu-CAT,其中存在大量缺陷,并且具有较高比例的低价值Cu中心.
- 作为合成的Cu-CAT电极在0.2 A g-1下达到508 F g-1的特定电容,显著超过传统合成的Cu-CAT (285 F g-1).
- 一个对称的超级电容器装置在0.5 A g-1下显示了高重力学容量365 F g-1的高重力学容量,能量密度为50.72 W h kg-1,并在10,000个循环后保持了91.6%的容量.
结论:
- 马射线照射是合成具有超级电容应用增强性能的二维c-MOF的有效方法.
- 辐射引起的缺陷工程显著提高了Cu-CAT的电化学性能.
- 开发的Cu-CAT材料显示出高性能和持久的储能设备的巨大潜力.
更多相关视频
12:00Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
14.5K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.6K
相关概念视频
02:36Nuclear Power
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
01:23Faraday Disk Dynamo
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
01:27Induced Electric Fields: Applications
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
01:21DC Battery
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
01:23Transmission Line Design Considerations
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...