用于无机基固态电池的共电键电极/电解质的工程
Linlin Wang1, Zhuohao Xie1, Xianzhi Wu1
1Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|February 3, 2025
概括
研究人员为固态电池开发了一种共价接口,显著提高了性能和稳定性. 这一突破解决了无机固体电解质对更安全,高性能电池的关键挑战.
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:
- 固态电解质为电池提供了更好的安全性和稳定性.
- 电极和无机固体电解质 (ISE) 之间的界面电阻限制了电池的性能.
- 实现有效的接口接触对于最佳固态电池功能至关重要.
研究的目的:
- 解决固态电池中接口接触的关键障碍.
- 制定构建稳定的共价电极/ISE接口的策略.
- 为了提高电化学稳定性和降低固态电池的界面电阻.
主要方法:
- 在阴极和无机固体电解质 (ISE) 之间构建一个共价接口.
- 研究加强电极/ISE相互作用对界面电阻的影响.
- 评估修改的固态电池的电化学性能和循环稳定性.
主要成果:
- 共振电极/ISE接口显著降低了接口电阻.
- 由于强化相互作用,观察到增强的电化学稳定性.
- 固态电池表现出卓越的循环稳定性,在1C的700个循环后保持85%的容量.
结论:
- 一个共振电极/ISE接口策略有效地克服了固态电池中的接口电阻.
- 这种方法可以显著提高电池性能和循环稳定性.
- 这项研究为开发高性能固态电池提供了一个有希望的途径.
相关概念视频
Ionic Bonding and Electron Transfer
41.2K
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.
41.2K
Ionic Bonds
117.8K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
117.8K
Batteries and Fuel Cells
26.9K
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...
26.9K
Electrodeposition
576
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
576
Types of Chemical Bonds
75.2K
Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type and formation of different bonds. Chemical bonding is central to chemistry; it explains how atoms or ions bond together to form molecules. It explains why some bonds are strong and others are weak, or why one carbon bonds with two oxygens and not three; why water is H2O and not H4O.
75.2K


