相关实验视频
Updated: Jul 10, 2025

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.4K
用于水性电池的多功能MXenes
Huan Liu1, Zijun Xin1, Bin Cao1
1College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 20, 2023
概括
作为水性离子电池 (AZIB) 的电极材料,MXenes具有独特的功能,提高了作为导电基质,活性材料和保护层的性能. 本综述总结了MXene在AZIB技术中的应用和挑战.
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:
- 水性离子电池 (AZIB) 由于其低成本,安全性和丰富的资源而具有吸引力.
- 对于AZIBs来说,MXenes是有前途的电极材料,提供出色的导电性,可调的表面化学和结构灵活性.
- 在AZIB中MXenes的各种功能需要系统的总结.
研究的目的:
- 为AZIBs提供基于MXene的电极材料提供最新的审查.
- 专注于MXenes在AZIB电极中的独特功能和作用.
- 突出目前的技术挑战和AZIB中MXenes的未来研究方向.
主要方法:
- 关于MXene在水性离子电池中的应用的综合文献综述.
- 在阴极和阳极两侧的MXene功能的分类.
- 分析MXene的作用,包括导电基质,活性物质,宿主,保护层,电解质添加剂和分离器修饰剂.
主要成果:
- MXenes作为二维导电基板,三维框架,柔性支和阴极中的涂层而起作用.
- MXenes可以作为阴极中的活性材料或活性材料的前体.
- 在阳极方面,MXenes充当活性物质宿主,提供金属表面保护,并修改电解质和分离器.
结论:
- MXenes 具有多功能功能,对于提高AZIB性能至关重要.
- 对MXene角色的系统理解对于优化AZIB设计至关重要.
- 解决技术挑战是MXene基AZIBs广泛采用的关键.
相关概念视频
Batteries and Fuel Cells
27.5K
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...
27.5K
Standard Electrode Potentials
44.0K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
44.0K
Voltaic/Galvanic Cells
57.4K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
57.4K
The Nernst Equation
41.0K
Nonstandard Reaction Conditions
The interconnection between standard cell potentials and various thermodynamic parameters such as the standard free energy change ΔG° and equilibrium constant K has been previously explored. For example, a redox reaction involving zinc(II) and tin(II) ions at 1 M concentration with Eºcell = +0.291 V and ΔG° = −56.2 kJ is spontaneous.
The interconnection between standard cell potentials and various thermodynamic parameters such as the standard free energy change ΔG° and equilibrium constant K has been previously explored. For example, a redox reaction involving zinc(II) and tin(II) ions at 1 M concentration with Eºcell = +0.291 V and ΔG° = −56.2 kJ is spontaneous.
41.0K
Concentration Cells
22.8K
A concentration cell is a type of a voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and using the same electrode, differing only in the concentration of one redox species. A concentration cell's potential, therefore, is determined only by the concentration difference of the particular redox species.
Consider the following voltaic cell:
Consider the following voltaic cell:
22.8K

