基于共价有机框架的高质子导电性固态电解质用于质子电池应用
Bing Tang1,2, Sheng-Ting Liu3, Xin-Rui Ma3
1International Chinese-Belorussian Scientific Laboratory on Vacuum-Plasma Technology, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
ACS applied materials & interfaces
|July 11, 2025
概括
研究人员使用共价有机框架 (COF) 复合材料开发了一种新的固态质子电池电解质. 这种先进的材料,H3PO4@COF-SO3H,显示出高质子导电性和稳定性,用于高效的能量存储.
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:
- 与液体电解质系统相比,固态质子电池为储能提供了更安全的替代方案.
- 开发高效的固态质子电解质对于推进这项技术至关重要.
- 目前的电解质在实现高导电性和长期稳定性方面面临着挑战.
研究的目的:
- 准备和评估一种新的基于共价有机框架 (COF) 的复合物作为固态质子电解质.
- 为了研究新电解质的质子导电性,稳定性和电化学性能.
- 为了证明基于COF的电解质在固态质子电池中的潜力.
主要方法:
- 合成了一种硫化COF (COF-SO3H).
- 酸 (H3PO4) 通过机械化学方法被纳入COF通道,形成H3PO4@COF-SO3H复合电解质.
- 复合材料的特征是使用粉末X射线衍射,NMR光谱,XPS和气体吸附.
- 用阻抗光谱和组装固态质子电池来评估电化学性能.
主要成果:
- 在环境条件下,H3PO4@COF-SO3H复合物表现出超质子导电性>10−2 S cm−1.
- 电解质表现出良好的长期稳定性和广泛的电化学稳定性窗口.
- 组装的固态质子电池表现出高的特定容量 (101.8mAhg-1在1.0Ag-1),优秀的速率能力和良好的循环稳定性 (1000个循环后80.6%的保留率).
结论:
- 基于COF的复合固态电解质,特别是H3PO4@COF-SO3H,为高性能固态质子电池提供了一个有希望的途径.
- 开发的电解质超过了之前报道的固态质子电池的性能.
- 这项工作突出了针对先进的储能应用量身定制的COF结构的潜力.
更多相关视频
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.1K
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
42.4K
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.
42.4K
03:12Batteries and Fuel Cells
28.0K
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...
28.0K
02:18Network Covalent Solids
14.6K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
14.6K
01:08Covalent Bonds
9.1K
Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
9.1K
02:58Crystal Field Theory - Octahedral Complexes
28.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
28.0K