独特的核心外结构聚烯纳米纤维向超高速率的灵活全固态超级电容器
Shuo Hu1, Jiawei Qin1, Yueying Shen1
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, and College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
Macromolecular rapid communications
|September 10, 2024
概括
研究人员使用绿色聚合方法开发了新的核心外聚氨纳米纤维. 这些纳米纤维显著提高了超级电容器的性能,为灵活的储能设备提供高能量密度和出色的稳定性.
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
- 纳米技术 纳米技术
背景情况:
- 在超级电容器中同时实现高电荷储存和快速充电仍然是一个重大挑战.
- 聚氨酸 (PANI) 是超级电容器的一个有前途的材料,但它经常受到影响性能的结构限制.
研究的目的:
- 开发一种简单可扩展的方法来制造用于储能的先进PANI纳米结构.
- 为超级电容器创建具有增强电化学性能的核心PANI纳米纤维.
主要方法:
- 利用流动种子聚合技术合成PANI纳米纤维.
- 嵌入的植物酸 (PA) 兴奋剂和与m-aminobenzene硫酸 (ASA) 配合聚合,用于定向生长和核心结构形成.
主要成果:
- 实现了PANI纳米纤维,其特定电容为671.2 Fg-1在2 A g-1和显著的速率能力 (93.1%的保留从2到100 A g-1).
- 制造了一种全固态超级电容器,其能量密度高 (28.3 Wh kg-1),速度能力优异 (81.2%从1到20 A g-1),以及良好的循环稳定性 (在5000个循环后77.5%).
结论:
- 开发的绿色和可扩展的合成方法产生了独特的核心PANI纳米纤维,适合高性能储能.
- 核心的PANI纳米纤维为灵活轻型超级电容器提供了一个有前途的平台,具有改进的充电存储和快速充电功能.
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