超级电容器
材料科学
多孔性
纳米技术
碳纤维
化学工程
化学
电容
复合材料
工程类
电极
复合数
物理化学
作者
Zhe Sheng,Jie Liu,Chengzhao Ye,Zhiyuan Wu,Wei Wu,Tong-Pu Yu,Ke Yang
标识
DOI:10.1016/j.colsurfa.2024.133699
摘要
Green and convenient construction of three-dimensional (3D) hierarchical porous carbon for supercapacitors (SCs) has drawn widespread attention due to their effective ion adsorption and transport capabilities. In this study, sucrose-derived spongy hierarchical porous carbon materials were successfully prepared using a one-step carbonization process with sodium chloride and sodium bicarbonate acting as collaborative pore-forming agents. The optimal carbon material exhibits a distinct 3D spongy structure with interconnected channels, high specific surface area, and proper pore size distribution. Consequently, it displays a specific capacitance of 263.5 F g−1 at 0.5 A g−1 and could retain 221.9 F g−1 (84.21%) at 20 A g−1. Additionally, the as-fabricated device delivers a supreme energy density of 17.0 Wh kg−1 at 80 W kg−1 and possesses exceptional cycling stability of 94.36% after 20000 cycles. Through the combination of raw material carbonization properties and synergistic pore-making mechanisms, the present work provides an effective and eco-friendly approach for fabricating 3D spongy hierarchical porous carbon materials with interconnected channels for high-performance SCs.
科研通智能强力驱动
Strongly Powered by AbleSci AI