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进步的离子电池具有Pb-PbF₂反电极和稀释液体电解质

Giulia Galatolo¹, Omar Alshangiti¹, Camilla Di Mino^1,2

¹Department of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom.

ACS energy letters

|January 17, 2024

概括

离子电池 (FIB) 现在可以在两电极硬币电池中使用新的Pb-PbF2电极进行可靠的测试. 这一突破解决了可比性问题,并推进了FIB技术,以提供更好的储能解决方案.

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:

离子电池 (FIB) 是一个有前途的后离子技术,由于高理论能量密度和丰富的材料.
目前使用洪水细胞的测试方法阻碍了性能评估和可比性,阻碍了FIB的发展.
标准化测试对于推进FIB技术至关重要.

研究的目的:

开发一种可靠的对应电极,用于对液体电解质FIB进行双电极硬币电池测试.
引入一种新的电解质配方,以提高FIB的性能和成本效益.
使用新的测试设置来演示高性能FIB系统.

主要方法:

开发一种与硬币电池兼容的稳定Pb-PbF2对电极.
液体电解质的配方,将高度缩的盐 (甲醇中的四甲基化) 与稀释剂 (propionitrile) 结合起来.
在开发的硬币电池配置中组装和电化学测试BiF3-Pb-PbF2全电池.

主要成果:

该Pb-PbF2电极可用于FIB的可靠的两电极硬币电池测试.
新的电解质配方平衡了导电性和成本优势.
BiF3-Pb-PbF2电池在这种配置中实现了迄今为止报告的最高容量保留.

结论:

开发的Pb-PbF2电极和电解质系统为FIB研究提供了一个标准化和可靠的平台.
这一进步促进了准确的绩效评估和跨研究的可比性.
这些发现为加速开发实用的FIB铺平了道路.

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