一种纤维增强的多离子液体) 固体电解质,具有低易燃性和高导电性,用于高性能金属电池
Junyan Tang1, En Chen1, Dehua Wang1
1Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.
ACS applied materials & interfaces
|March 21, 2025
概括
研究人员开发了纤维增强聚合物电解质,用于更安全,高性能金属电池. 这些材料具有低易燃性和高离子导电性,提高了电池的安全性和效率.
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
- 聚合物化学 聚合物化学
背景情况:
- 开发用于金属电池的固体电解质对于安全性和性能至关重要.
- 在聚合物电解质中实现低可燃性和高离子导电性仍然是一个重大挑战.
研究的目的:
- 为了创建纤维增强的聚合物电解质,提高安全性和导电性.
- 为了研究聚离子液体) 固体电解质的特性,这些电解质被整合到聚烯二烯酸纤维膜中.
主要方法:
- 在位共聚离子液体单体和聚乙烯糖醇) 在多烯二烯酸纤维膜内的二烯酸盐.
- 复合电解质的易燃性,离子导电性和电化学稳定性的表征.
- 使用开发的电解质制造和测试金属电池全电池 (LiFePO4//Li和NCM//Li).
主要成果:
- 这些PAN/Poly-IL-PEGDA复合电解质表现出极好的低易燃性.
- 优化的电解质 (PAN/Poly-IL-PEGDA-1) 显示出高离子导电率 (0.32 mS cm−1 在 30 °C) 和广泛的电化学窗口 (高达 4.8 V).
- 完整细胞表现出优越的速度能力和循环稳定性.
结论:
- 为制造阻燃性,高导电性聚合物电解质建立了一个简单的策略.
- 开发的复合电解质对高性能金属电池具有前景.
- 这项工作解决了固态电池开发的关键挑战.
相关概念视频
02:48Ionic Bonding and Electron Transfer
40.2K
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.
40.2K
02:54Molecular and Ionic Solids
16.6K
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...
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...
16.6K