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相关概念视频

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
Superplasticizers01:30

Superplasticizers

Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...

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用于可穿戴超级电容器的导电聚合物为基础的双网水凝.

Bu Quan1, Linjie Du1, Zixuan Zhou2

  • 1Centre for Innovative Materials for Health, School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.

Gels (Basel, Switzerland)
|November 26, 2024
PubMed
概括

研究人员开发了一种灵活,坚固的水凝超级电容器,用于可穿戴电子设备. 这种新的PEDOT-PVA/PEGDA双网水凝具有出色的机械和电化学性能,可实现稳定的电力存储和传感应用.

关键词:
导电聚合物的聚合物.双网络水凝是双网络的水凝.能源供应 能源供应 能源供应皮肤上生物电子学灵活的超级电容器固态电解质 固态电解质

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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
  • 聚合物科学 聚合物科学

背景情况:

  • 当代的表皮生物电子需要安全,轻量,灵活和强大的能源供应.
  • 现有的电源往往无法满足这些对可穿戴应用的苛刻标准.

研究的目的:

  • 为表皮生物电子应用合成和表征一种新的双网聚合物水凝.
  • 评估开发的用于储能和传感的水凝的电化学性能和机械性能.

主要方法:

  • 将3,4-乙烯二氧化 (EDOT) 聚合成一个多乙烯醇/多乙烯甘二烯酸盐 (PVA/PEGDA) 双网水凝矩阵.
  • 使用PEDOT-PVA/PEGDA水凝电极和PVA/KCl水凝电解质制造一个超级电容器装置.
  • 通过充放电周期评估机械性能 (应变),电导率,特定电容,能量密度和电化学稳定性.

主要成果:

  • 该PEDOT-PVA/PEGDA水凝表现出高应变能力 (498%),优异的电导率 (5 S m-1),和特定电容 (84.1 ± 3.6 mF cm-2).
  • 组装的超级电容器设备实现了54.5mF cm-2的特定电容,能量密度为4.7μWh cm-2,并在3000个循环后保持了97.6%的电容.
  • 液凝对应变具有很高的敏感性和出色的防腐性能,有效地作为灵活的传感器发挥作用.

结论:

  • 灵活且抗污染的PEDOT-PVA/PEGDA双网水凝式超级电容器是一种有前途的储能解决方案.
  • 这种材料具有将其集成到可穿戴电子设备中的巨大潜力,可提供稳定可靠的能源供应.