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材料导报  2025, Vol. 39 Issue (22): 24110051-8    https://doi.org/10.11896/cldb.24110051
  无机非金属及其复合材料 |
Ni-MOF/GNS@Ni/Mn-LDH电极材料的电化学性能研究
马应霞1,2,*, 李静1,2, 孟田力1,2, 常士范1,2, 李文静1,2
1 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050
2 兰州理工大学材料科学与工程学院,兰州 730050
Research on Electrochemical Properties of Ni-MOF/GNS@Ni/Mn-LDH Electrode Materials
MA Yingxia1,2,*, LI Jing1,2, MENG Tianli1,2, CHANG Shifan1,2, LI Wenjing1,2
1 State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2 School of Materials Science & Engineering, Lanzhou University of Technology, Lanzhou 730050, China
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摘要 金属有机框架材料(MOF)结构可控,比表面积大,孔隙率高,其作为电极材料的研究备受关注,然而本征电导率低、易团聚、结构易坍塌等问题也限制了其电化学应用。作为一种碳材料,石墨纳米片(GNS)具有良好的导电性和结构稳定性,将镍基MOF(Ni-MOF)原位生长在GNS上构筑Ni-MOF/GNS,可以提高Ni-MOF的导电性、分散性和结构稳定性,但产物的比容量和功率密度较低。层状双金属氢氧化物(LDH)具有良好的氧化还原活性和阴离子交换性能,能够提供较高的比容量和功率密度。基于此,本工作采用溶剂热法将Ni/Mn-LDH原位引入Ni-MOF/GNS,并通过调控Ni(NO3)2·6H2O与Mn(NO3)2·4H2O的物质的量比、反应温度、反应时长,构筑了一系列Ni-MOF/GNS@Ni/Mn-LDH纳米杂化材料。研究结果表明,在最优条件下构筑的Ni-MOF/GNS@Ni/Mn-LDH于1.0 A/g电流密度下的比容量为1 102.0 C/g,其与活性炭组装的非对称超级电容器的功率密度为800.0 kW/kg,能量密度为15.3 Wh/kg。
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马应霞
李静
孟田力
常士范
李文静
关键词:  金属有机框架  电极材料  石墨纳米片  层状双金属氢氧化物    
Abstract: Metal-organic frameworks (MOFs) have attracted much attention as electrode materials due to the structural controllability, large specific surface area, and high porosity. However, MOFs have intrinsically low electrical conductivity, tendency to agglomerate, and structural instability, which limit their application as electrode materials. Graphite nanosheets (GNS) as one of carbon materials have the advantages of good conductivity and stable structure. By in situ growth of nickel MOFs (Ni-MOFs) on GNS, the electrical conductivity, dispersibility and structural stability of Ni-MOFs were improved. Nevertheless, the specific capacity and power density are relatively low. Layered double hydroxides (LDH) have good oxidation-reduction activity and anion exchange performance, which could provide high specific capacities and power densities. Hence, in this work, Ni/Mn-LDH was introduced into Ni-MOFs/GNS to construct a series of Ni-MOF/GNS@Ni/Mn-LDH nanohybrid materials using solvothermal method by adjusting the molar ratio of Ni(NO3)2·6H2O to Mn(NO3)2·4H2O, reaction temperature, and time length. The results showed that the Ni-MOF/GNS@Ni/Mn-LDH obtained at the optimal conditions exhibited a specific capacity of 1 102.0 C/g at the current density of 1.0 A/g. The asymmetric supercapacitors assembled by the aforementioned Ni-MOF/GNS@Ni/Mn-LDH and activated carbon had a power density of 800.0 kW/kg and an energy density of 15.3 Wh/kg.
Key words:  metal-organic frameworks    electrode material    graphite nanosheets    layered double hydroxide
出版日期:  2025-11-25      发布日期:  2025-11-14
ZTFLH:  TQ15  
基金资助: 甘肃省自然科学基金重点项目(23JRRA818)
通讯作者:  *马应霞,博士,兰州理工大学教授。主要从事功能高分子的合成以及有机/无机纳米杂化材料的构筑及性能研究。mayx2011818@163.com   
引用本文:    
马应霞, 李静, 孟田力, 常士范, 李文静. Ni-MOF/GNS@Ni/Mn-LDH电极材料的电化学性能研究[J]. 材料导报, 2025, 39(22): 24110051-8.
MA Yingxia, LI Jing, MENG Tianli, CHANG Shifan, LI Wenjing. Research on Electrochemical Properties of Ni-MOF/GNS@Ni/Mn-LDH Electrode Materials. Materials Reports, 2025, 39(22): 24110051-8.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24110051  或          https://www.mater-rep.com/CN/Y2025/V39/I22/24110051
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