灵活的,可堆叠的,并且具有可扩展的3D拓结构的完全活跃的厚电极使得超连续的电子/离子运输成为可能
Ying-Ying Wang1,2, Huan Chen2, Jia-Lin Yang3
1State Centre for International Cooperation on Designer Low-Carbon & Environmental Materials, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|November 5, 2025
概括
研究人员开发了一种灵活的微孔碳布,用于高性能离子电容器 (LIC). 这种厚厚的电极设计可以实现超连续的离子/电子传输,提高能量密度和稳定性.
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:
- 厚厚的电极设计对于储能设备的高能量/功率密度至关重要.
- 在厚型电极中实现有效的离子和电子传输仍然是一个重大挑战.
- 目前制造具有连续传输通道的全活性厚电极的经济有效方法有限.
研究的目的:
- 为离子电容器 (LIC) 开发一种灵活,可堆叠和完全活跃的厚电极材料.
- 创建一种具有超连续电子/离子传输通道的电极制造的成本效益高的方法.
- 调查LICs开发的电极的性能和机制.
主要方法:
- 使用简单的策略,从棉布制成完全微孔碳布 (FMCC).
- 堆叠多层FMCC,以创建厚电极的3D拓网络结构.
- 使用FMCC作为阴极和阳极的LIC的组装和电化学测试.
主要成果:
- FMCC具有完全微孔的结构,具有很大的特定表面积和自我支能力.
- 双向编织的空心纤维束结构促进了超连续的离子/电子传输.
- 一个5层的FMCC电极在1 A g-1.1时实现了1.53 mA h cm-2的超高面积特异容量.
- 用厚厚的FMCC电极组装的4.9VLIC显示出出色的能量/功率密度和在机械应力下稳定的性能.
结论:
- 开发的FMCC是LIC中高性能,灵活的厚电极的有希望的材料.
- 三维拓网络结构和固有的微孔性是实现卓越电化学性能的关键.
- 这项工作为设计先进的灵活能源存储设备提供了宝贵的见解.
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