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₂C₄O₄预化添加剂如何影响双碳离子电容器的固体电解质间相?

Miguel Granados-Moreno^1,2, Rosalía Cid¹, Maria Arnaiz¹

¹Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.

ACS applied materials & interfaces

|November 4, 2024

概括

二二氧化 (Li2C4O4) 在离子电容器 (LIC) 中提供稳定,不太溶解的固体电解质介相 (SEI). 这种预化剂修改了SEI的组成,提高了LIC和离子电池 (LIB) 的设备稳定性.

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
储能储能储能储能储能储能

背景情况:

在双碳离子电容器 (LIC) 中,预化是必不可少的,以防止电解质耗尽.
二二氧化酸 (Li2C4O4) 是一个有前途的,稳定的空气和成本效益的LICs的预化试剂.
2C4O4对LIC固体电解质介相 (SEI) 的影响仍未得到研究.

研究的目的:

用Li2C4O4作为预化剂,研究硬碳 (HC) 电极上的SEI形成和演变.
分析由Li2C4O4.4形成的SEI的化学组成和稳定性.
为了将SEI特征与通过标准电化学预化获得的特征进行比较.

主要方法:

使用X射线光电子光谱 (XPS) 来分析SEI的组成.
在最初的化周期中,在化和脱状态的电极上进行了表面分析.
进行了老化测试,以评估SEI的长期稳定性.

主要成果:

与标准电化学预化相比,Li2C4O4预化导致化学修饰的SEI.
与Li2C4O4形成的SEI具有降低的溶解性,从而在循环过程中提高稳定性.
在长时间的循环周期中,SEI组成保持稳定.

结论:

二二方酸 (Li2C4O4) 有效调整离子设备中的SEI特性.
由Li2C4O4形成的稳定且不太溶解的SEI增强了LIC的循环性能.
2C4O4可以作为离子电容和电池中的预化剂和薄膜形成添加剂.

关键词:

美国海军突击队.这是XPSXPS.活性炭活性炭的使用方法二二氧化二甲酸二酸盐的二二氧化二甲酸盐.硬碳是一种硬的碳.离子电容器电容器的离子电容器在化前进行化.

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