基于有机框架的结合电解质与可控制的结合网络,用于固态电池
Yue Wang1, Li-Na Song1, Xiao-Xue Wang1,2
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Angewandte Chemie (International ed. in English)
|July 21, 2024
概括
一种新的与结合的有机框架电解质使高性能固态氧电池成为可能. 这种新的电解质提供了快速的离子传输和稳定的循环,推进了固态电池技术.
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:
- 固态电池面临的挑战是稳定的固态电解质 (SSEs) 和电极/电解质接口.
- 实现高离子导电性和合理的接口设计对于实际应用至关重要.
研究的目的:
- 开发一种高性能固态氧 (Li-O2) 电池,使用一种新的电解质.
- 为了研究离子导电联有机框架 (LHOF) 电解质的性能和性能.
主要方法:
- 使用LHOF-DAT SSEs和一个HOF-DAT@CNT复合阴极制造固态2电池.
- 对LHOF-DAT SSEs的离子导电性,转移数,电化学窗口和循环稳定性的表征.
- 评估电池性能,包括特定容量,循环寿命和速率能力.
主要成果:
- LHOF-DAT SSE表现出快速的Li+离子传输 (2.2×10-4 S cm-1),高转移率 (0.88),以及广泛的电化学窗口 (5.05 V).
- 对称电池在1400小时内表现出稳定的循环,这是由于均的Li+流量和结构稳定性.
- -O2电池实现了高特定容量 (10335 mAh g-1) 和150个循环;固态金属电池显示出良好的速率能力和210个循环.
结论:
- 开发的LHOF-DAT SSE为高性能固态电池提供了一个有前途的平台.
- 动态结网络是实现快速离子传输和结构完整性的关键.
- 这项工作为设计用于下一代能源存储的先进固态电解质开辟了新的途径.
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
12.9K
10:58Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
Published on: March 7, 2018
10.1K
相关概念视频
02:48Ionic Bonding and Electron Transfer
41.4K
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.
41.4K
00:42Ionic Bonds
118.2K
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...
118.2K
03:12Batteries and Fuel Cells
27.2K
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...
27.2K
02:54Lewis Structures of Molecular Compounds and Polyatomic Ions
34.7K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
34.7K
02:42Aqueous Solutions and Heats of Hydration
14.6K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.6K
02:54Molecular and Ionic Solids
17.1K
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...
17.1K