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首页> 外文期刊>Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry >Lamellar hierarchically porous carbon derived from discarded Barbary figs husk: Preparation, characterization, and its excellent capacitive properties
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Lamellar hierarchically porous carbon derived from discarded Barbary figs husk: Preparation, characterization, and its excellent capacitive properties

机译：源自弃渣的伯巴里无花果壳：制备，表征及其优异的电容性质的层状阶层多孔碳

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摘要

Plant-based carbon materials have been used for electrode materials of supercapacitor due to their low price and developed pore structure. In this work, a kind of Activated Carbon derived from Barbary Figs Husk (ACBFH) was prepared by direct carbonization followed by KOH activation. TEM and BET analysis showed that the obtained ACBFH at 700 ?C had the well hierarchical structure with uniform micropores and mesopores distribution. Due to the hetero-atom doping (N and O) and high specific surface area (1480 m2?g?1), the specific capacitance of the ACBFH electrode reached up to 497 F?g?1 in three electrode configuration with excellent capacitance retention of 96.5% after 10,000 cycles. Furthermore, all-solid-state symmetric ACBFH700//ACBFH700 device exhibited superb energy density value of 35.8 Wh?kg?1 at power density of 478.6 W?kg?1. Importantly, two symmetric devices in series could light yellow and blue LEDs for 16 and 8 mins, respectively. Therefore, the ACBFH opened the way for supercapacitor device with an efficient and sustainable electrode material in energy storage devices.
机译：植物基碳材料因其价格低廉、孔结构发达而被广泛应用于超级电容器电极材料中。本研究采用直接炭化和KOH活化的方法制备了一种无花果壳活性炭（ACBFH）。TEM和BET分析表明，在700？C具有良好的层次结构，微孔和中孔分布均匀。由于杂原子掺杂（N和O）和高比表面积（1480 m2？g？1），ACBFH电极的比电容达到497 F？G1在三电极配置中，10000次循环后电容保持率高达96.5%。此外，全固态对称ACBFH700//ACBFH700器件表现出35.8Wh？的超高能量密度值？公斤1在功率密度为478.6 W时？公斤1.重要的是，两个串联的对称设备可以分别点亮黄色和蓝色LED 16分钟和8分钟。因此，ACBFH为超级电容器装置开辟了道路，为储能装置提供了一种高效、可持续的电极材料。

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