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一种高度稳定的LiNO₃/N - - 甲基胺深度环氧电解质,用于可充电Li-O_2电池

Chuanchao Sheng¹, Wei Li¹, Haoshen Zhou¹

¹Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China. wei_li@nju.edu.cn.

Chemical communications (Cambridge, England)

|April 22, 2025

概括

一种使用酸和N-甲基胺的新型深电解质 (DEE) 为氧电池制造. 这种先进的电解质为下一代储能提供了更高的稳定性和性能.

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:

氧 (Li-O2) 电池具有高的理论能量密度,但在循环寿命和电解质稳定性方面面临挑战.
开发稳定的电解质,促进高效的阳极循环和氧减氧/进化反应至关重要.

研究的目的:

为2电池开发一种新型的深电解质 (DEE).
调查高LiNO3度和结在电解质性能中的作用.
评估使用开发的DEE的Li-O2电池的循环稳定性和效率.

主要方法:

合成一个含有LiNO3和N-甲基胺 (NMA) 的深度高温电解质 (DEE).
电解质性质的表征,重点是结和LiNO3溶解度.
对Li-O2电池进行电化学测试,包括循环性能和容量保持.

主要成果:

成功制备了一个稳定的LiNO3-NMA DEE,使得LiNO3度高达3.2M.
该DEE与阳极具有很好的兼容性,并充当有效的氧化媒介.
-O2电池实现了显著的循环稳定性,完成了380个循环在200mAg-1的容量1000mAhg-1.

结论:

LiNO3-NMA DEE显示出对高性能和稳定的Li-O2电池应用的重大承诺.
在DEE中的强结合是其增强性质和兼容性的关键.
这项工作提出了一个可行的电解质策略,用于推进氧电池技术.

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