超级电容器
材料科学
石墨烯
电容
纳米复合材料
氧化物
化学工程
电极
电化学
纳米技术
复合数
金属有机骨架
储能
多孔性
复合材料
化学
有机化学
冶金
功率(物理)
物理
物理化学
吸附
量子力学
工程类
作者
Ali A. Ensafi,R. Fazel Zarandi,Behzad Rezaei,Jin‐Song Hu
出处
期刊:Fuel
[Elsevier]
日期:2022-09-01
卷期号:324: 124724-124724
被引量:10
标识
DOI:10.1016/j.fuel.2022.124724
摘要
Metal-organic frameworks (MOFs) have escalated much attention as innovative electrode materials for supercapacitors applications due to their high porosity, adequate active sites, and tunable structures. However, most MOFs show low capacitance, which limits their application in energy storage devices. In this study, a new MOF composite containing poly(4-aminothiophenol) (PAT), Zn, Ni, and reduced graphene oxide (rGO), abbreviated as PATZ1N2G2-MOF, was fabricated by a one-step simple hydrothermal method and its electrochemical characteristics for supercapacitor applications were examined. The structural characterization of the proposed MOF exhibited successful synthesis of a highly porous and nanoscale crystalline spherical PATZ1N2G2-MOF configuration mainly spread on extra thin nano-sheets of rGO. The convenient mixed spherical structure of PATZ1N2-MOF and rGO Nano-sheets facilitates more electrochemically active regions and more accessible routes for charge and mass transfer, developing a specific capacitance as high as 1230.23F g−1 at a current density of 1.0 A g−1 as well as excellent capacitance retention of 89.8% after 3000 repetitive cycles. Moreover, the capacity of the modified positive electrode for the 2-electrode setup was obtained to be 93.31F g−1, producing a high energy and power density of 33.17 Wh kg−1 and 188.35 W kg−1, respectively. The experimental results revealed the superior supercapacitive behavior of the PATZ1N2G2-MOF/NF electrode.
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