Binfaris Abdulrahman S, Zestos Alexander G, Abot Jandro L
Department of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USA.
Department of Chemistry, American University, Washington, DC 20016, USA.
Energies (Basel). 2023 Aug 1;16(15). doi: 10.3390/en16155736.
Developing efficient, sustainable, and high-performance energy storage systems is essential for advancing various industries, including integrated structural health monitoring. Carbon nanotube yarn (CNTY) supercapacitors have the potential to be an excellent solution for this purpose because they offer unique material properties such as high capacitance, electrical conductivity, and energy and power densities. The scope of the study included fabricating supercapacitors using various materials and characterizing them to determine the capacitive properties, energy, and power densities. Experimental studies were conducted to investigate the energy density and power density behavior of CNTYs embedded in various electrochemical-active matrices to monitor the matrices' power process and the CNTY supercapacitors' life-cyclic response. The results showed that the CNTY supercapacitors displayed excellent capacitive behavior, with nearly rectangular CV curves across a range of scan rates. The energy density and power density of the supercapacitors fluctuated between a minimum of 3.89 Wh/kg and 8 W/kg while the maximum was between 6.46 Wh/kg and 13.20 W/kg. These CNTY supercapacitors are being tailored to power CNTY sensors integrated into a variety of structures that could monitor damage, strain, temperature, and others.
开发高效、可持续且高性能的储能系统对于推动包括集成结构健康监测在内的各个行业至关重要。碳纳米管纱（CNTY）超级电容器有潜力成为实现这一目标的绝佳解决方案，因为它们具有诸如高电容、电导率以及能量和功率密度等独特的材料特性。该研究的范围包括使用各种材料制造超级电容器，并对其进行表征以确定电容特性、能量和功率密度。进行了实验研究，以研究嵌入各种电化学活性基质中的碳纳米管纱的能量密度和功率密度行为，以监测基质的功率过程以及碳纳米管纱超级电容器的寿命循环响应。结果表明，碳纳米管纱超级电容器表现出优异的电容行为，在一系列扫描速率下具有近乎矩形的循环伏安曲线。超级电容器的能量密度和功率密度在最小值3.89 Wh/kg和8 W/kg之间波动，而最大值在6.46 Wh/kg和13.20 W/kg之间。这些碳纳米管纱超级电容器正在进行定制，以为集成到各种结构中的碳纳米管纱传感器供电，这些结构可以监测损伤、应变、温度等。
