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工程密集包装的离子集群电解质用于宽温度硫化多烯二电池

Junxiong Wu¹, Manxian Li¹, Lianbo Ma²

¹Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Key Laboratory of Pollution Control & Resource Reuse, College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian 350000, China.

|November 14, 2024

概括

一种新型密集离子集群电解质 (DPIE) 通过提高稳定性和充电传输来提高硫电池的性能. 这种新的电解质设计为先进的能量存储提供了延长的运行寿命和扩展的温度耐受性.

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:

电解质对于硫电池 (LSB) 是至关重要的,影响充电传输,硫转化和相间形成.
现有的电解质往往与阳极或硫阴极的兼容性差,限制了LSB的性能.

研究的目的:

开发一种新的电解质,克服当前系统的局限性,以提高硫电池的性能.
研究新电解质的自我组装和溶解结构及其对电池运行的影响.

主要方法:

使用弱溶解溶剂和惰性稀释剂开发密集的离子集群电解质 (DPIE).
使用新型DPIE,制造和测试离子和硫化聚烯二 (LiidiyeSPAN) 电池.
评估电池性能,包括循环稳定性,库伦比克效率和温度耐受性.

主要成果:

DPIE促进了快速的Li+溶解,强大的电极-电解质界面,并抑制了多硫化物溶解.
在室温下,SPAN电池表现出300个稳定周期,容量保持率为97.8%.
在有限的面积容量比率下以及在广泛的温度范围 (-20至60°C) 中观察到出色的稳定性.

结论:

开发的DPIE显著提高了硫电池的稳定性和寿命.
这种电解质设计使LSB具有更好的充电能力和更广泛的操作温度耐受性.
这些发现为下一代储能解决方案的先进,高性能LSB铺平了道路.

关键词:

密集的离子集群电解质密集的电解质.硫电池是硫电池的一种.聚硫化物穿运输公司溶解剂溶解剂的溶解能力较弱.温度范围广泛的温度范围.

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