高压灵活的离子电池天极材料基于1D共价有机框架
Shuai Liu1,2, Puiki Leung1,2, Yong Zuo1,2
1Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, MOE, Chongqing, 400030, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 23, 2025
概括
一个新的1D共价有机框架 (COF),TP-PDA,证明了优异的离子电池性能. 这种多孔材料提供稳定的循环和高容量保留,用于先进的能量存储.
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:
- 由于其多孔结构,共价有机框架 (COF) 对离子电池 (SIB) 是有前途的.
- 传统的2D和3DCOF通常需要后处理以提高电化学性能.
研究的目的:
- 为了合成和评估1D imine-linked COF (TP-PDA) 作为SIBs的电极材料.
- 研究TP-PDA在SIB中的电化学性能和稳定性.
主要方法:
- 用于合成1DCOF,TP-PDA的单步希夫基反应.
- 在SIB半电池和带硬碳阳极的全电池中对TP-PDA进行电化学测试.
- 评估循环稳定性,容量保留和曲条件下的性能.
主要成果:
- TP-PDA具有完全结合和多孔结构,可促进高效的离子运输.
- 该材料表现出稳定的循环性能,具有高平均放电潜力 (3.1V) 和容量保留 (>90%经过1800个循环后).
- 完整的细胞表现出了显著的稳定性 (122mAh-1万次循环后) 和灵活性.
结论:
- 合成的1D COF (TP-PDA) 是SIBs的高度稳定和高效的电极材料.
- TP-PDA的特性使其适用于灵活和可穿戴的储能应用.
更多相关视频
08:42Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
13.6K
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
02:42Ionic Crystal Structures
15.0K
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...
15.0K
02:48Ionic Bonding and Electron Transfer
42.5K
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.
42.5K
02:42Formal Charges
34.0K
In some cases, there are seemingly more than one valid Lewis structures for molecules and polyatomic ions. The concept of formal charges can be used to help predict the most appropriate Lewis structure when more than one reasonable structure exists.
34.0K
00:42Ionic Bonds
122.1K
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...
122.1K