一种与金属相容的化固体电解质,用于全固态电池.
Sheng Wang1,2, Yaqing Zhou2,3, Xiao Huang2
1Guangxi Key Laboratory of Manufacturing Systems and Advanced Manufacturing Technology, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China.
ACS applied materials & interfaces
|July 23, 2025
概括
研究人员通过将化替换为化,开发出新的化电解质. 这稳定了与金属的接口,提高了固态金属电池的性能.
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
- 固态化学 固态化学
背景情况:
- 化物超离子导体具有高离子导电性和机械灵活性.
- 与金属阳极的接口不稳定性限制了基于化物的全固态金属电池 (ASSLB).
研究的目的:
- 为了合成新的化固体电解质,Li2ZrCl6-x (x = 0-3).
- 为了提高化物电解质对金属阳极的电化学稳定性.
主要方法:
- 固态合成Li2ZrCl6-x的电解质.
- 对称和全细胞的电化学测试.
- 使用X射线光电子谱学 (XPS) 和飞行时间二次离子质谱学 (ToF-SIMS) 进行表面表征.
主要成果:
- Li2ZrCl4I2在Li/Li2ZrCl4I2/Li对称细胞中表现出稳定的循环 (> 6000 h) 在0.2 mA cm-2.
- 实现了高临界电流密度,高达6 mA cm-2 .
- 用Li2ZrCl4I2的完整细胞显示了更好的循环稳定性和容量保留.
- XPS和ToF-SIMS证实了LiI/LiCl被动化层的形成,稳定了Li金属阳极.
结论:
- 在化物电解质中化物替代增强了通过促进共价键的减少稳定性.
- I/LiCl接口层有效抑制电解质分解,并稳定金属阳极.
- 这些发现为开发高能量密度ASSLB的强化物电解质提供了可行的策略.
更多相关视频
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.1K
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
25.6K
相关概念视频
02:48Ionic Bonding and Electron Transfer
42.3K
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.
42.3K
02:42Ionic Crystal Structures
14.8K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.8K
00:42Ionic Bonds
121.9K
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...
121.9K
02:21Electrolyte and Nonelectrolyte Solutions
64.0K
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
64.0K
02:55Solubility of Ionic Compounds
64.2K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
64.2K
02:54Molecular and Ionic Solids
17.6K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.6K