Ni-MOF/GNS@Ni/Mn-LDH电极材料的电化学性能研究

doi:10.11896/cldb.24110051

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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

Published: 25 November 2025 Online: 2025-11-14

CLC number:

TQ15

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	Articles by authors
	MA Yingxia
	LI Jing
	MENG Tianli
	CHANG Shifan
	LI Wenjing

Cite this article:

MA Yingxia,LI Jing,MENG Tianli, et al. Research on Electrochemical Properties of Ni-MOF/GNS@Ni/Mn-LDH Electrode Materials[J]. Materials Reports, 2025, 39(22): 24110051-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24110051 OR https://www.mater-rep.com/EN/Y2025/V39/I22/24110051

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