基于石墨烯增强的等级纳米结构导电聚合物复合电极的高能量密度纤维超级电容器
Chuangen Ye1, Qingfeng Yang2, Mingxian Xu1
1High-tech Industry (Pilot) Base, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.
Nanomaterials (Basel, Switzerland)
|September 12, 2025
概括
研究人员开发了先进的纤维超级电容器 (FSCs),在碳纳米管纤维上使用聚烯/石墨烯复合材料. 这些灵活的设备为可穿戴电子产品提供高能量密度和耐用性.
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:
- 便携式和可穿戴电子设备需要先进的储能解决方案,如光纤超级电容器 (FSC).
- 目前的FSC面临能量密度的限制,这阻碍了它们在灵活设备中的使用.
- 开发高性能电极材料对于下一代灵活的电子产品至关重要.
研究的目的:
- 为了提高纤维超级电容器的能量密度和耐用性.
- 创建新的复合电极材料,用于灵活的储能应用.
- 为了研究聚氨酸/石墨烯/碳纳米管复合材料的电化学和机械性能.
主要方法:
- 在聚氨 (PANI) 前体溶液中加入微米大小的石墨烯.
- 在碳纳米管 (CNT) 纤维上电化学聚合PANI和电沉积PANI/石墨烯复合材料.
- 使用PANI/graphene@CNT复合纤维和CNT薄膜制造的同轴纤维超级电容器.
主要成果:
- 开发了纤维PANI/graphene@CNT复合电极,具有卓越的电化学活性和高特异性表面积.
- 在同轴纤维超级电容器中达到160.5μWh cm−2的最大能量密度和13 mW cm−2的功率密度.
- 证明了显著的机械和电化学耐用性,在3000个曲周期后保持了89.77%的电容.
结论:
- PANI/graphene@CNT复合电极显示出优异的能量储存和输出能力.
- 制造出来的纤维超级电容器对灵活的电子产品具有有前途的机械和电化学稳定性.
- 这项工作为开发高性能灵活能源存储设备提供了一个可行的策略.
更多相关视频
12:00Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
14.6K
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
5.1K
相关概念视频
Batteries and Fuel Cells
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
Energy Stored in a Capacitor
When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
Energy Stored in Capacitors
A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
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...
