超级电容器
电容
材料科学
碳纤维
法拉第效率
活性炭
电极
硼
兴奋剂
化学工程
功率密度
复合材料
光电子学
化学
电化学
功率(物理)
有机化学
吸附
复合数
物理
物理化学
量子力学
工程类
作者
Johnsirani Devarajan,A. Pandurangan
标识
DOI:10.1007/s10854-022-08595-x
摘要
For a supercapacitor electrode, carbon-based materials have received great attention for their high surface area and stability. In this work, sustainable and cost-effective synthesis of boron-doped activated biomass-derived carbon from the stems of Prosopis juliflora has been reported for supercapacitor applications. The activation by KOH creates pores and boron induces p-type doping in the carbon matrix. The material gave a higher specific capacitance of 307.14 F/g at a current density of 0.5 A/g. The symmetric supercapacitor device delivered 156.29 F/g of specific capacitance with 98.1% of energy efficiency. The observed energy and power densities were 7.81 Wh/Kg and 150 W/Kg, respectively. The device was further studied with stability test for 1000 charge/discharge cycles and showed 98.6% of capacitance retention and 97.9% of coulombic efficiency.
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