储能科学与技术2024，Vol.13Issue(2)：361-369,9.DOI:10.19799/j.cnki.2095-4239.2023.0545
三维孔道NiMn-MOF电极材料制备及电化学性能研究
Preparation and electrochemical properties of NiMn-MOF with 3D pore network electrode materials
摘要
Abstract
Addressing the issue of low energy density and complex preparation process associated with supercapacitor electrode materials,this study capitalizes on the high specific surface area and porous structure of MOF materials.Bimetallic NiMn-MOF nanosheets with a three-dimensional pore network structure were prepared through a simple and controllable one-step hydrothermal method.The close atomic radius of Ni and Mn proved beneficial for synthesizing bimetallic NiMn-MOF,exposing additional active sites.The optimization of process parameters resulted in bimetallic NiMn-MOF electrode materials with high specific volumes.The morphology and crystal structure of the electrode materials were characterized in detail via scanning electron microscopy,energy-dispersive spectroscopy,and X-ray diffraction.The electrochemical properties were also analyzed using cyclic voltammetry,galvanostatic charge/discharge,and electrochemical impedance spectroscopy.The results showed an impressive specific capacitance of 1023.5 F/g at 0.5 A/g in a 6 mol/L KOH electrolyte.Additionally,an assembled asymmetric supercapacitor delivered a capacitance of 94.37 F/g at 0.5 A/g,successfully powered a red LED.This outcome underscores the excellent electrochemical performance of NiMn-MOF,offering a new approach to preparing electrode materials for supercapacitors.关键词
镍锰过渡金属有机框架材料/电极材料/超级电容器/电化学性能Key words
NiMn-MOF/electrode materials/supercapacitors/electrochemical performances分类
信息技术与安全科学引用本文复制引用
刘新,毛喜玲,闫欣雨,王俊强,李孟委..三维孔道NiMn-MOF电极材料制备及电化学性能研究[J].储能科学与技术,2024,13(2):361-369,9.基金项目
国家自然科学基金青年基金项目(62004178),山西省基础研究计划(202203021212149). （62004178）
