还原氧化石墨烯-金属(Cu,Zn)-氧化物材料的合成、表征及电化学性能

Q1 Earth and Planetary Sciences Indonesian Journal of Science and Technology Pub Date : 2023-03-10 DOI:10.17509/ijost.v8i2.56065
S. sugianto, N. M. D. Putra, E. Rahayu, W. Widayatno, C. Firdharini, S. Priyono, D. Aryanto
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引用次数: 0

摘要

采用一步水热法制备了还原氧化石墨烯(rGO)和金属(Cu,Zn)氧化物复合材料。研究了(Cu,Zn)-氧化物对复合材料物理和电化学性能的影响。该复合材料由各种形状的氧化锌纳米花和微球,以及氧化铜纳米片和八面体形状组成。在rGO- zno、rGO- cuo和rGO- cuo - zno复合材料中可以观察到(Cu,Zn)氧化物在rGO- zno层之间形成。通过晶体结构、微观结构和表面官能团的分析也证实了复合结构中存在ZnO、CuO和rGO。表面活性剂残留的一些多余杂质使复合材料的电化学性能产生相当大的差异。rGO、rGO- zno、rGO- cuo、rGO-(0.5CuO-0.5ZnO)和rGO-(0.25CuO-0.75ZnO)复合材料的比电容值分别为9.32、58.53、54.14、25.21和69.27 F/g。双金属氧化物结构的形成以及将其插入氧化石墨烯薄膜中可以显著改善超级电容器的电化学性能。
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Synthesis, Characterization, and Electrochemical Performance of Reduced Graphene Oxide-Metal (Cu,Zn)-Oxide Materials
The reduced graphene oxide (rGO) and metal (Cu,Zn)-oxide composites were prepared using a one-step hydrothermal technique. The role of (Cu,Zn)-oxide on the physical and electrochemical properties of the composite was investigated. The composite consists of various shapes of ZnO nanoflowers and micro-spheres, as well as Cu-oxide nanoflakes and octahedron-like shapes. The (Cu,Zn)-oxides were formed in between the rGO layers and observed in the rGO-ZnO, rGO-CuO, and rGO-CuO-ZnO composites. The presence of ZnO, CuO, and rGO within the composite structure is also confirmed by the analyses of crystal structure, microstructure, and surface functional groups. Some excess impurities remaining from the surfactant give considerable differences in the electrochemical performance of the composites. The specific capacitance values of the rGO, rGO-ZnO, rGO-CuO, rGO-(0.5CuO-0.5ZnO), and rGO-(0.25CuO-0.75ZnO) composites are 9.32, 58.53, 54.14, 25.21, and 69.27 F/g, respectively. The formation ofa double metal-oxide structure as well as their insertion into the rGO sheet can significantly improve the electrochemical properties of the supercapacitor.
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来源期刊
Indonesian Journal of Science and Technology
Indonesian Journal of Science and Technology Engineering-Engineering (all)
CiteScore
11.20
自引率
0.00%
发文量
10
审稿时长
16 weeks
期刊最新文献
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