掺还原氧化石墨烯Ni(OH)2/Ni3S2/NF复合电极材料的制备

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-04-21 DOI:10.1016/j.materresbull.2025.113503

Kang Wei , Jun Li , Xiao Sun , Meng Shao , Jianguo Tang , Soowohn Lee

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引用次数: 0

摘要

采用两步水热法和碱化处理，在泡沫镍（NF）上成功合成了rGO/Ni(OH)2/Ni3S2复合电极材料。为了考察反应时间对二次水热过程的影响，设置了3种不同的水热时间（4 h、6 h、8 h）。结果表明，在1 A·g−1条件下，水热反应时间为6 h (4 h: 1807.8 F·g−1,8 h: 1358.3 F·g−1)，电极的比电容最高，为2260 F·g−1。在10 A·g−1和50 mV·s−1下循环5000次后，其保留率分别为41.7%和137.9%。最后，rGO/Ni(OH)2/Ni3S2/NF （6 h）和活性炭组成的复合超级电容器（HSC）表现出优异的电化学性能。当功率密度为4000.5 W⋅kg−1时，其能量密度为25.2 Wh⋅kg−1，证明了其作为HSC器件电极材料的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Preparation of Ni(OH)2/Ni3S2/NF composite electrode materials doped with rGO

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Preparation of Ni(OH)2/Ni3S2/NF composite electrode materials doped with rGO

rGO/Ni(OH)₂/Ni₃S₂ composite electrode materials were successfully synthesized on Ni foam (NF) by a two-step hydrothermal process and subsequent alkalization treatment. To investigate the influence of reaction time in the secondary hydrothermal process, three different hydrothermal times (4 h, 6 h, 8 h) were set. The results showed that the electrode had the highest specific capacitance of 2260 F·g⁻¹ at 1 A·g⁻¹ at the hydrothermal reaction time of 6 h, (4 h: 1807.8 F·g⁻¹, 8 h: 1358.3 F·g⁻¹). In addition, it exhibited prominent rating capability and cycling stability, with 41.7 % retention at 10 A·g⁻¹ and 137.9 % retention after 5000 cycles at 50 mV⋅s⁻¹. Finally, the assembled hybrid supercapacitor (HSC) with rGO/Ni(OH)₂/Ni₃S₂/NF (6 h) and active carbon displayed outstanding electrochemical performance. When the power density was 400.5 W⋅kg⁻¹, it showed the energy density (25.2 Wh⋅kg⁻¹), proving its potential as electrode materials for HSC devices.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.