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长周期寿命的Ca电池具有聚甲硫化) 阴极和Ca-Sn合金阳极

Daniel Bier^1,2, Zhenyou Li^1,3, Svetlana Klyatskaya²

¹Helmholtz Institute Ulm (HIU), Helmholtzstr. 11, D-89081, Ulm, Germany.

|August 1, 2023

概括

电池显示出高能储存的前景. 使用带有-锡合金阳极的1,5-多聚乙硫化物 (PAQS) 阴极显著提高了可持续能源解决方案的循环稳定性和速率能力.

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
可持续能源可持续能源

背景情况:

(Ca) 电池是离子技术的有希望的替代品,因为它们具有高电压和能量密度的潜力.
开发可持续和高性能储能系统对于未来的能源需求至关重要.

研究的目的:

为了研究1,5-多聚乙硫化物 (PAQS) 作为离子储存的有机阴极材料的潜力.
通过探索替代阳极材料来解决电池中阳极降解的问题.

主要方法:

通过成本效益和环保的方法合成PAQS.
使用四 ((hexafluoroisopropyloxy) 酸电解质与金属和-锡合金阳极的PAQS阴极的电化学评估.
开发的电池系统的长期循环和速率能力测试.

主要成果:

PAQS阴极在2.2V时显示出94mAhg-1的容量,与金属阳极在0.5C时的Ca相比,但遭受了快速的阳极降解.
将金属阳极替换为-锡 (Ca-Sn) 合金阳极,从而显著提高了循环性能 (1000个循环后在0.5°C时45 mAh g−1) 和速率能力 (52 mAh g−1在5°C时).
PAQS的灵活结构和Ca-Sn合金阳极与电解质的兼容性促进了可逆回氧化化学.

结论:

1,5-聚乙硫化 (PAQS) 是离子电池的可行的有机阴极材料.
使用-锡合金阳极克服了金属阳极的局限性,使长期循环和良好的速率性能.
有机阴极材料代表了开发绿色和可持续电池的有希望的途径.

关键词:

这是一种Ca−Sn合金.基于的电池的电池.生命周期生命周期生命周期有机电极是有机的电极.聚甲 (甲) 硫化物 (甲) 是一种

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