相关实验视频

Updated: Jul 23, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

合成后共价有机框架,以提高固态电解质的性能

Jing Zhang¹, Derong Luo¹, Hong Xiao¹

¹Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.

ACS applied materials & interfaces

|July 18, 2023

概括

本研究介绍了COF-SS-Li,这是一种用于固态离子电解质的新型功能化阴离子共价有机框架 (COF). 这种材料在先进的离子电池应用中表现出有希望的离子导电性和稳定性.

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
纳米技术纳米技术

背景情况:

联有机框架 (COF) 是具有有序通道,适合离子传输的晶体材料.
对COF的功能化可以增强它们的特性,用于特定的应用,如电解质.

研究的目的:

设计和合成一种新的功能化离子COF,命名为COF-SS-Li,用于作为固态离子电解质.
研究合成的COF的离子运输机制和电化学性能.

主要方法:

使用Povarov反应对基硫酸盐群 (-SO3-) 的BDTA-COF的合成后修饰.
对COF-SS-Li材料的表征和对其离子导电性和电化学稳定性的评估.
使用COF-SS-Li作为固态电解质的离子电池组装和测试.

主要成果:

在20°C时,COF-SS-Li的离子导电率为9.63 × 10−5 S cm−1,在40°C时为1.28 × 10−4 S cm−1.
该材料显示了4.85V的宽电化学窗口和600小时的Li IDCOF-SS-Li IDCOLi对称电池中稳定的循环性能.
一个LiadoseCOF-SS-LiadoseLiFePO4电池的初始容量为117 mAh g−1,在500个循环后保持56.7%.

结论:

功能化的阳离子COF,COF-SS-Li,通过跳跃机制有效促进离子运输.
COF-SS-Li显示出作为离子电池稳定和高效的固态电解质的潜力.
这项研究有助于为下一代储能设备开发先进的固态电解质.

关键词:

协价有机框架协价有机框架功能化的功能化.离子电池是一种离子电池.在合成后的合成后.固态电解质固态电解质

更多相关视频

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

相关概念视频

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

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.

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Molecular and Ionic Solids

Molecular and Ionic Solids

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...

Ionic Crystal Structures

Ionic Crystal Structures

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...