固体多电解质的设计,使耐用离子电池成为可能
Xu Yang1, Zhiqiang Fu2, Ran Han2
1Centre for Clean Energy Technology Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
Angewandte Chemie (International ed. in English)
|April 25, 2024
概括
研究人员开发了一种新的固体多电解质,用于室温离子电池. 这一突破使得阳极的使用成为可能,提高了安全性和性能,以实现经济高效的能源存储.
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:
- 离子电池 (CIB) 提供高能量密度和成本效益,成为离子电池的替代品.
- 由于缺乏适合用于经济性阳极的电解质,CIBs的发展受到阻碍.
- 由于其成本和容量, (Al) 金属是理想的阳极材料,但需要兼容的电解质.
研究的目的:
- 设计和合成一种新的固体多电解质 (SPE),用于室温CIB.
- 为了使金属能够在CIB中作为成本效益高的阳极使用.
- 提高CIB的安全性和稳定性.
主要方法:
- 一种固体多电解质 (SPE) 的合理设计和合成.
- 描述SPE的离子导电性和结构性质.
- 在室温下组装和电化学测试AldaisyESPEdaisyFeOCl CIB.
主要成果:
- 由于其量身定制的协调结构,SPE表现出高离子导电性 (1.3×10−2 S cm−1 在25°C).
- 该SPE确保了稳定的电极-电解质接口,抑制了Al阳极状物生长和FeOCl阴极降解.
- 基基FeOCl CIB 显示出高放电能力 (~250 mAh g-1) 和延长周期寿命.
结论:
- 开发的SPE促进了稳定和安全的室温离子电池与阳极.
- 这种电解质设计代表了低成本和高性能CIB的重大进步.
- 这些发现为开发下一代储能系统开辟了新的途径.
相关概念视频
Ion Exchange
591
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
591
Ionic Bonding and Electron Transfer
41.5K
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.
41.5K
Electrolyte and Nonelectrolyte Solutions
62.9K
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.
62.9K
Chemical Reactions in Aqueous Solutions
60.6K
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction.
60.6K
Ionic Crystal Structures
14.3K
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...
14.3K
Solubility of Ionic Compounds
63.1K
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.
63.1K


