超级电容器
气凝胶
材料科学
电解质
功率密度
碳纤维
电容
超临界干燥
化学工程
电流密度
比表面积
纳米技术
复合材料
电极
化学
复合数
有机化学
功率(物理)
物理
物理化学
量子力学
工程类
催化作用
作者
Ashwini V. Patil,Suman A. Sawant,Rajendra G. Sonkawade,Rajiv S. Vhatkar
标识
DOI:10.1016/j.est.2023.108533
摘要
As new-generation biomass-derived carbon materials, carbon aerogels offer opportunities in supercapacitor applications. Owing to their excellent properties viz., a synergy of unique interconnected hierarchical porous structure, high specific surface area (SSA), and electrical conductivity they prove their candidature in electric double layer capacitors (EDLCs). In this article, we represent a green synthesis of carbon aerogel using sugarcane juice as a carbon source via cost effective hydrothermal method instead of the traditional supercritical drying method which is more toxic, time-consuming, and expensive. The structural and compositional studies confirm the formation of Sugar Aerogel (SA). Additionally, the surface analysis shows the interconnected porous scoop-like structure with a high SSA of 2028 m2/g and a low bulk density of 0.08 g/cc. Furthermore, the synthesized powder was screen printed on flexible stainless-steel mesh to conduct electrochemical study at various Na2SO4 electrolyte concentrations (0.3, 0.6, 1.0, 2.0, 3.0 M). In 1.0 M Na2SO4 electrolyte, the SA showed 70% retention rate after 5500 cycles at 30 mA/cm2 current density over 1.9V potential window and also provides high energy density and power density 61.72 Wh/kg and 1588.33 W/kg respectively. Also, the SA||SA device exhibits stability over 1000 cycles with a 30% increment in capacitance with energy and power density 86 Wh/kg and 7920 W/kg. This study signifies the great potential of sugarcane juice to get SA via a simple, cost-effective, and environmentally friendly hydrothermal route for the fabrication of SC electrodes in neutral electrolyte Na2SO4.
科研通智能强力驱动
Strongly Powered by AbleSci AI