高度无O3类型层状氧化:对离子电池的一种有希望的稳定性阴极
Akanksha Joshi1, Sankalpita Chakrabarty1, Sri Harsha Akella1
1Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan, 5290002, Israel.
Advanced materials (Deerfield Beach, Fla.)
|August 14, 2023
概括
为离子电池开发了一种新的无,高氧化物阴极. 这种材料表现出高容量和更好的稳定性,为储能提供了一个有前途的替代方案.
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:
- 由于资源的可用性,离子电池 (SIB) 正在成为离子电池的可持续替代品.
- 开发高性能阴极材料对于推进SIB技术至关重要.
研究的目的:
- 为SIBs合成和表征一种新的无,高氧化物阴极.
- 调查高成分和合物的对电化学性能和结构稳定性的影响.
主要方法:
- 高合成方法创建一个多元单相阴极.
- 在特定的电压窗口内进行电化学测试 (循环性能,容量测量).
- 现场和现场衍射研究,分析循环过程中的结构变化.
主要成果:
- 在初始循环中实现了109 mAh g-1 (2-4 V) 和144 mAh g-1 (2-4.3 V) 的可逆容量.
- 在自行车稳定性和空气稳定性方面取得了显著的改进.
- 通过衍射研究证实了复杂相变的抑制,归因于高战略.
结论:
- 高的方法在开发稳定,高容量的离子电池的无正极方面是有效的.
- 氧化化合物组成和的结合增强了配置,结构稳定性和电化学动力学.
- 这项工作为未来研究先进的储能解决方案的高材料提供了坚实的基础.
更多相关视频
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
25.5K
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.0K
相关概念视频
02:48Ionic Bonding and Electron Transfer
41.7K
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.
41.7K
02:42Ionic Crystal Structures
14.4K
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...
14.4K
00:42Ionic Bonds
118.6K
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...
118.6K