用于高性能非水性氧化还原流电池的低电位-双解质,具有基于金属有机框架的分离器
Chenyang Shao1, Junpeng Li1, Yunzhan Liu1
1Chemical Hybrid Energy Novel Laboratory, Shenzhen Key Laboratory of New Lithium-ion Batteries and Mesoporous Materials, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518071, PR China. hnchen@szu.edu.cn.
概括
一种新型的2.7V非水性氧化还原流电池 (NRFB) 使用Li-biphenyl阳解体和Fe-N-C MOF分离器. 这种设计实现了高容量和稳定性,为先进的储能解决方案铺平了道路.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 非水性氧化还原流电池 (NRFB) 为高压储能提供了潜力.
- 开发稳定高效的电解质和分离器对于NRFB的性能至关重要.
研究的目的:
- 为了研究2.7V Li-biphenyl (BP) 解质对NRFBs.
- 评估Fe-N-C MOF分离器在提高电池性能和稳定性方面的有效性.
主要方法:
- 一个Li-BP-LiI3 NRFB系统的制造和测试.
- 使用密度函数理论 (DFT) 来确认分离器机制.
- 循环测试以评估容量保留和稳定性.
主要成果:
- 该NRFB实现了80Ah L-1的容量.
- 该电池在100个循环中显示96%的容量保留.
- Fe-N-C MOF 分离器有效地减轻了交叉污染,并改善了LiI3的减少.
结论:
- 开发的Li-BP-LiI3 NRFB系统显示出对高压应用的前景.
- Fe-N-C MOF 分离器是实现NRFB高稳定性的关键组件.
- 这项研究提出了通往高压,高稳定性NRFB的可行途径.
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