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基于粗纳米纤维捆绑和订购网络水凝的高性能超级电容器.

Xin-Xin Chen1, Yu-Xiong Ju1, Bei Zhang1

  • 1Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Scientific Research Center, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, China.

International journal of biological macromolecules
|December 28, 2024
PubMed
概括

这项研究开发了一种灵活的水凝超级电容器,具有增强的机械强度和稳定的电化学性能. 这种新的设计在3000次拉伸后保持了超过91%的电容,解决了可穿戴电子产品的关键挑战.

关键词:
软骨结构是软骨的结构.大致纳米纤维捆绑和有序网络.水凝超级电容器 超级电容器丝纳米纤维是一种

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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:

  • 柔性水凝超级电容器由于机械稳定性和电化学性能差,在应力下经常发生故障.
  • 为可穿戴应用开发强大的超级电容器需要耐变形的材料.

研究的目的:

  • 设计和制造一个灵活的水凝超级电容电极,具有卓越的机械性能和在拉伸应变下稳定的电化学性能.
  • 调查用于储能应用的新型水凝电极的结构性质关系.

主要方法:

  • 使用定向结构建了一个粗的纳米纤维捆绑,并使用定向结来订购网络骨架.
  • 准备了一个基于聚乙醇 (PVA) 的水凝电极,包含碳纳米管 (CNT) 和聚烯 (PPy).
  • 在各种应变条件下评估机械性能 (抗拉强度,疲劳值) 和电化学性能 (电容保持).

主要成果:

  • PVA-SNF-CNTs-PPy-3水凝电极具有很高的抗拉强度 (6.22 MPa) 和疲劳值 (8759.8 J/m2).
  • 由于有序导电网络,达到高达23.96 F/cm2的高面积特定电容.
  • 证明了出色的电容保持率 (>98.2%在150%的变形) 和稳定性 (>91.45%在3000次拉伸周期后).

结论:

  • 开发的水凝电极为高性能灵活超级电容器提供了一个有前途的解决方案.
  • 粗纳米纤维捆绑和有序的网络结构显著提高了机械可靠性和电化学稳定性.
  • 这项工作为为灵活的电子产品制造机械坚固和高容量的储能装置提供了新的策略.