双耳Zwitterionic金属有机框架用于金属电池的选择性全固态超电传导
Yuan Ouyang1, Wei Gong1, Qi Zhang1
1Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Guangdong University of Technology, Guangzhou, 510006, China.
Advanced materials (Deerfield Beach, Fla.)
|June 21, 2023
概括
研究人员开发了一种新的金属有机框架,用于固态电池的双层zwitterionic纳米通道. 这种先进的材料提高了离子导电性和安全性,为高性能固态电池铺平了道路.
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
- 纳米技术纳米技术
背景情况:
- 固态电池 (SSB) 与传统电池相比,提供了更高的安全性和能量密度.
- 目前的固态电解质 (SSEs) 难以满足SSB的苛刻运行需求.
研究的目的:
- 开发一种新的金属有机框架 (MOF),用于高性能SSEs的定制双层zwitterionic纳米通道 (MOF-BZN).
- 在先进的SSB应用中解决现有SSE的局限性.
主要方法:
- 设计和合成MOF-BZN,其中包括一个刚性阴离子MOF通道与移植的多化寡合体 (MCOs).
- 描述MOF-BZN的离子导电性,Li+转移数和电化学稳定性.
- 在苛刻的条件下使用MOF-BZN SSE制造和测试SSB.
主要成果:
- MOF-BZN 显示出出色的 Li+ 导电性 (8.76 × 10-4 S cm-1) 和高的 Li+ 转移数 (0.75).
- 该材料表现出高达4.9V的宽电化学窗口.
- 由此产生的SSB在高阴极负荷和有限的条件下实现了419.6 Wh kg-1的特定能量.
结论:
- 双层zwitterionic MOF设计为先进的SSE提供了一个开创性的策略.
- MOF-BZN为开发高效和安全的固态电池提供了一个有前途的途径.
- 这种方法克服了当前固态电解质技术的关键挑战.
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