超级电容器
碳化
电容
材料科学
功率密度
电化学
储能
可再生能源
碳纤维
化学工程
水平扫描速率
多孔性
电极
纳米技术
复合材料
化学
功率(物理)
复合数
电气工程
循环伏安法
扫描电子显微镜
物理化学
工程类
物理
量子力学
作者
Lulu Wang,Xuejian Li,Xing Huang,Sheng Han,Jibo Jiang
标识
DOI:10.1016/j.jallcom.2021.161908
摘要
From the perspective of sustainability, using biomass waste to synthesize hierarchical interconnected porous carbon (HIPC) for long-life and high-energy/power density supercapacitors are a research hotspot. Here, waste peach gum and other green resources are transformed into N, P co-doped and O-rich layered interconnected porous carbon through impregnation and carbonization processes. Thanks to the multiple synergistic effects originated from a high specific area (1635 m2 g−1) and a suitable N, P co-doped content, the HIPC electrode materials exhibits an excellent electrochemical performance with a high specific capacitance (490 F g−1 under 1 A g−1) and superior rate capability. More importantly, the maximum energy density of the assembled symmetrical supercapacitor can reach a power density of 76.87 Wh kg−1 at 799.8 W kg−1, and delivers an excellent cycle life (the capacitance loss rate after 10,000 cycles is only 10.1%). Moreover, the optimum samples of HIPC exhibit satisfactory rate stability at different scan rates. This work provides an efficient and economical strategy for energy storage and renewable delivery devices.
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