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通过调节电极/电解质厚度的石墨烯氧化物基全固态超级电容器实现了大容量增强

Xing Wei¹, Junru Wang¹, Rui Chen¹

¹Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.

Small (Weinheim an der Bergstrasse, Germany)

|April 9, 2025

概括

基于氧化石烯的全固态超级电容器 (GO ASSCs) 显示出对小型化能源存储的承诺. 调整MXene/GO厚度将电容提高到与液体电解质设备相比的水平.

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:

全固态超级电容器 (ASSC) 与液体电解质设备相比,具有安全性和集成优势.
石墨烯氧化物 (GO) 和MXene是ASSC有前途的材料,但需要提高电容.
目前的GO ASSC需要增强容量来实现实际应用.

研究的目的:

调查MXene/GO厚度对GO ASSC电化学性能的影响.
为了在GO ASSC中实现与液体电解质超级电容器相比较的高容量.
了解电荷存储机制并克服GO ASSC中的扩散限制.

主要方法:

不同厚度的MXene-GO ASSC板状结构的制造.
电化学表征,包括电容量测量和现场压力测试.
分析材料厚度,离子扩散和电容之间的关系.

主要成果:

调整MXene/GO厚度显著影响ASSC电容,达到高达200 F/g.
一个特定的厚度组合显示出高容量,尽管明显的缓慢扩散动力学.
现场压力测试显示,电荷储存效率提高,表明离子扩散优化.

结论:

简单调整MXene/GO厚度是一种有效的策略,可以提高GO ASSC的电容.
固体电解质和电极之间的微妙平衡可以克服离子扩散限制.
这种方法为使用MXene或其他伪电容材料的高性能GO ASSC提供了简单的解决方案.

关键词:

在MXene电极上使用MXene.石墨烯氧化物厚度石墨烯氧化物厚度离子扩散离子扩散固体电解质是一种固体电解质.

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