在固态金属电池中的互电极通话
Jun Ma1,2, Shu Zhang1, Yue Zheng1,3
1Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
Advanced materials (Deerfield Beach, Fla.)
|July 13, 2023
概括
固态金属电池因充电和放电过程中的机械故障而面临挑战. 了解电极之间的相互作用是改善电动汽车电池寿命的关键.
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
- 机械工程 机械工程
背景情况:
- 固态金属电池 (SSLMB) 对于电动汽车至关重要,因为它们的能量密度和安全性很高.
- 固体组件的机械性能导致电化学机械故障,如裂和空隙,限制循环寿命.
- 了解这些故障机制对于推进SSLMB技术至关重要.
研究的目的:
- 提供了解SSLMB故障机制的最新进展的概述.
- 提供对阴极和金属阳极之间的交叉交谈的新见解.
- 为设计稳定的SSLMB和未来研究方向提出指导方针.
主要方法:
- 关于SSLMB故障机制的最新文献的审查.
- 分析由非均的Li+流量引起的电化学机械相互作用.
- 电极间交叉通话现象的识别.
主要成果:
- 的透,裂和空隙形成被确定为关键的故障模式.
- 电极之间的不均的Li+流导致相互作用电化学机械故障.
- 阴极和金属阳极之间的交叉通话显著影响电池性能.
结论:
- 解决电极间交叉通话对于减轻电化学机械故障至关重要.
- 为稳定的SSLMB设计提出了指导方针.
- 对电极间相互作用的进一步研究将加速SSLMB的开发.
相关概念视频
Batteries and Fuel Cells
27.7K
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...
27.7K
Ionic Bonding and Electron Transfer
41.8K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
41.8K
Interfacial Electrochemical Methods: Overview
289
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
289
Electrolysis
26.8K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.8K
Electromotive Force
26.7K
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one...
26.7K
Metal-Semiconductor Junctions
395
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
395


