混合交联固体聚合物电解质通过现场固化使高性能固态金属电池成为可能
Kexin Mu1, Dai Wang1, Weiliang Dong1
1Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
Advanced materials (Deerfield Beach, Fla.)
|August 4, 2023
概括
研究人员开发了一种新的混合聚合物电解质,用于固态金属电池. 这种新材料提高了安全性和能量密度,使下一代电池能够稳定循环并保持高容量.
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:
- 固态金属电池提供高能量密度和安全优势.
- 目前的局限性包括热/电化学稳定性差以及线性聚乙烯的界面反应.
研究的目的:
- 开发一种先进的有机/无机混合聚合物电解质 (HCPE),用于改进的固态金属电池.
- 克服与传统聚合物电解质相关的稳定性和接口问题.
主要方法:
- 在现场开环的混合交联聚合.
- 用于固态电池应用的HCPE的制造和表征.
主要成果:
- 在30°C达到优异的离子导电性 (2.22 × 10−3 S cm−1) 和超高的Li+转移数 (0.88).
- 证明了广泛的电化学稳定性窗口 (5.2V) 和稳定的剥离/层超过1000小时.
- 组装的固态电池表现出良好的长周期性能 (>2°C的600个周期),容量保持率为92.1%.
结论:
- 开发的HCPE为高安全性,高能量密度的固态金属电池提供了有前途的途径.
- 高CPE的不可燃性和稳定接口解决了实际应用的关键挑战.
更多相关视频
10:58Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
Published on: March 7, 2018
10.2K
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
03:12Batteries and Fuel Cells
27.6K
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...
27.6K
01:17Ion Exchange
621
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...
621