聚乙 (聚乙乙) 授予离子电池的高维度热稳定性聚烯分离器
Yuhan Liu1, Zijian Zhang1, Xinwei Du2
1Faculty of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, P. R. China.
ACS applied materials & interfaces
|July 26, 2023
概括
研究人员开发了一种新的涂层,用于离子电池分离器,使用聚乙烯 (PEEK). 这种PEEK涂层显著提高了热稳定性和离子导电性,提高了电池的性能和安全性.
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
- 聚合物科学 聚合物科学
背景情况:
- 离子电池 (LIB) 中的传统聚烯烯分离器因电解质湿度差以及热稳定性有限而受到影响.
- 这些限制阻碍了LIB技术的进步和安全.
研究的目的:
- 开发一种高效且耐用的涂层,用于使用聚乙乙 (PEEK) 的聚烯烯分离器.
- 为了克服传统LIB分离器固有的局限性,并提高电化学性能.
主要方法:
- 使用修改后的相位逆转技术,用PEEK覆盖聚烯烯分离器.
- 评估了涂层分离器的机械,热和电化学性能.
主要成果:
- 用PEEK涂层的分离器的机械性能与未经修改的聚烯分离器相当.
- 涂层隔离器表现出极好的热稳定性,最高可达200°C,离子导电率增强超过100%.
- 使用PEEK涂层分离器的原型半电池显示了电化学性能的显著改善.
结论:
- 修改后的相位逆转技术为使用PEEK的多烯分离器提供了功能化的实用方法.
- 这些增强的分离器代表了下一代离子电池的有希望的进步.
更多相关视频
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
11:25Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway
Published on: March 7, 2022
4.6K
相关概念视频
01:17Ion Exchange
622
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...
622
01:09Ion-Exchange Chromatography
585
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
585