Carbon fiber yarns（CFY） are promising as a new type of flexible building blocks for the construction of flexible architectures for the energy storage applications. The main hurdle with CFY is how to make them high e...Carbon fiber yarns（CFY） are promising as a new type of flexible building blocks for the construction of flexible architectures for the energy storage applications. The main hurdle with CFY is how to make them high energy and power capable by using economically and environmentally viable materials. Here,we report reduced graphene oxide（r GO） and Prussian blue（PB） coated CFY, derived from a facile electrochemical process at room temperature for supercapacitor electrodes. The PB coated CFY and r GO coated CFY electrodes exhibit the excellent gravimetric capacitance of 339 F/g and 160.2 F/g, respectively, in aqueous KCl electrolyte in three-electrode cell configuration. When we coupled these electrodes inside the flexible plastic tube and separated by the electrolyte wet filter paper in order to construct flexible architecture, the resulting device delivers excellent specific energy of 52.1 Wh/kg and 26.5 Wh/kg with offering specific power of 3100 W/kg and 14400 W/kg respectively, under a wide operating potential of1.8 V with excellent rate capability. The device shows high tolerance towards bending, and retained its efficiency to the capacitance after being bent at an angle of 360° for 200 bending cycles.展开更多
基于不同接结纱经向间距的设计,研究了不同接结纱经向间距对环氧树脂(EP)/碳纤维间隔织物(CFSF)复合材料的力学性能、电学性能的影响规律,结合扫描电子显微镜,分析经向间距对复合材料性能的影响机制。结果表明,随着接结纱经向间距的增加...基于不同接结纱经向间距的设计,研究了不同接结纱经向间距对环氧树脂(EP)/碳纤维间隔织物(CFSF)复合材料的力学性能、电学性能的影响规律,结合扫描电子显微镜,分析经向间距对复合材料性能的影响机制。结果表明,随着接结纱经向间距的增加,EP/CFSF复合材料的冲击强度和弯曲强度减小,韧性减弱,电阻率增大。当接结纱经向间距为4 mm时,复合材料具有较佳的综合性能,其冲击强度为13.5 k J/m^2,弯曲强度为121.30 MPa,导电性能最好,电阻率为0.077Ω·m。展开更多
基金CNPq, Govt. of Brazil for providing financial support under the scheme of Science without Border to carry out this research work
文摘Carbon fiber yarns（CFY） are promising as a new type of flexible building blocks for the construction of flexible architectures for the energy storage applications. The main hurdle with CFY is how to make them high energy and power capable by using economically and environmentally viable materials. Here,we report reduced graphene oxide（r GO） and Prussian blue（PB） coated CFY, derived from a facile electrochemical process at room temperature for supercapacitor electrodes. The PB coated CFY and r GO coated CFY electrodes exhibit the excellent gravimetric capacitance of 339 F/g and 160.2 F/g, respectively, in aqueous KCl electrolyte in three-electrode cell configuration. When we coupled these electrodes inside the flexible plastic tube and separated by the electrolyte wet filter paper in order to construct flexible architecture, the resulting device delivers excellent specific energy of 52.1 Wh/kg and 26.5 Wh/kg with offering specific power of 3100 W/kg and 14400 W/kg respectively, under a wide operating potential of1.8 V with excellent rate capability. The device shows high tolerance towards bending, and retained its efficiency to the capacitance after being bent at an angle of 360° for 200 bending cycles.
文摘基于不同接结纱经向间距的设计,研究了不同接结纱经向间距对环氧树脂(EP)/碳纤维间隔织物(CFSF)复合材料的力学性能、电学性能的影响规律,结合扫描电子显微镜,分析经向间距对复合材料性能的影响机制。结果表明,随着接结纱经向间距的增加,EP/CFSF复合材料的冲击强度和弯曲强度减小,韧性减弱,电阻率增大。当接结纱经向间距为4 mm时,复合材料具有较佳的综合性能,其冲击强度为13.5 k J/m^2,弯曲强度为121.30 MPa,导电性能最好,电阻率为0.077Ω·m。
