超级电容器
电容
材料科学
碳纳米管
储能
电解质
电化学
纳米技术
复合数
纳米材料
化学工程
电容感应
功率密度
电极
化学
复合材料
功率(物理)
物理
物理化学
量子力学
工程类
计算机科学
操作系统
作者
Abdul Hakeem Anwer,Mohd Zahid Ansari,Fouzia Mashkoor,Shushuai Zhu,Mohd Shoeb,Changyoon Jeong
标识
DOI:10.1016/j.jallcom.2023.170038
摘要
To develop innovative energy-storage devices, metal-organic frameworks (MOFs) with various nano-geometries must be rationally combined. In this research, a trimetallic-based MOF with varying ratios of carbon nanotubes (CNT) was synthesized and optimized for use in electrochemical supercapacitor devices. The composite material has a corrugated-layered structure that allows for fast ion transport and electrolyte storage. The synergistic features of CNT and MOF, along with the stronger redox reactions of multimetallic ionic species, enable effective charge storage. The 1D nanotube form of CNT provides stability and electrical conductivity. MOF-CNT(5 %) showed a higher capacitive efficiency than MOF due to its high specific capacitance and rate capacity (86.1 % retention at 5 A/g). The MOF-CNT(5 %)//ACarbon composite exhibited a capacitance of 166.4 F/g at 1 A/g, 79.2 % retention after 10,000 charging/discharging cycles, a high-power density of 501.5 W/kg, and an energy density of 23.6 Wh/kg, making it a potential nanomaterial for asymmetric supercapacitors. Dunn's and Trasatti's model were used to extract regression parameters and capacitive-diffusive contributions of the supercapacitor.
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