| 引用本文: | 魏文硕,宋朝霞,曾森,孙囡翾,刘伟.NiCo2O4/氧化石墨烯复合材料制备与电化学性能研究[J].材料科学与工艺,2018,26(5):47-53.DOI:10.11951/j.issn.1005-0299.20170333. |
| WEI Wenshuo,SONG Zhaoxia,ZENG Sen,SUN Nanxuan,LIU Wei.Preparation and electrochemical properties of sea urchin-like NiCo2O4/Go composites[J].Materials Science and Technology,2018,26(5):47-53.DOI:10.11951/j.issn.1005-0299.20170333. |
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| NiCo2O4/氧化石墨烯复合材料制备与电化学性能研究 |
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魏文硕1,2,宋朝霞2,曾森3,孙囡翾1,刘伟1
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(1.大连理工大学 化工学院,辽宁 大连 116024;2.大连民族大学 生命科学学院,辽宁 大连116600; 3. 中广核工程有限公司,广东 深圳 518124)
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| 摘要: |
| 为了研究NiCo2O4/氧化石墨烯(NiCo2O4/GO)复合材料的电化学性能，本文通过先水热合成前驱体再煅烧的方法制备了一系列NiCo2O4/GO复合材料.利用X射线衍射(XRD)、扫描电子显微镜(SEM)和电化学方法对其进行物理表征，其中以GO质量浓度为1 mg/mL悬浊液制备出的NiCo2O4 /GO-3复合材料呈类海胆状结构.在1 M KOH水溶液中使用循环伏安法、恒电流充/放电法和交流阻抗法研究了NiCo2O4/GO复合材料电化学性能.研究表明，与纯NiCo2O4相比，制备的NiCo2O4 /GO复合材料的比容量和赝电容性能均有明显提高，这主要是由于NiCo2O4 /GO复合材料中NiCo2O4与GO纳米片的相互作用形成的高孔隙率复合结构；NiCo2O4 /GO-3复合材料在电流密度为0.5~3.0 A/g时，比电容超过650 F/g，具有良好的倍率性能和高比容量.采用本文方法合成的NiCo2O4/GO复合材料，既提高了其倍率性能又保证了高比容量，是一种良好的超级电容器电极材料.
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| 关键词: 超级电容器 电极材料 NiCo2O4 GO 复合材料 |
| DOI：10.11951/j.issn.1005-0299.20170333 |
| 分类号:TM35 |
| 文献标识码:A |
| 基金项目:辽宁省自然科学基金资助项目 (201602197). |
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| Preparation and electrochemical properties of sea urchin-like NiCo2O4/Go composites |
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WEI Wenshuo1,2, SONG Zhaoxia2, ZENG Sen3, SUN Nanxuan 1, LIU Wei1
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(1.School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; 2.College of Life Science, Dalian Minzu University, Dalian 116600, China; 3.China Nuclear Power Engineering Co., Ltd., Shenzhen 518124, China)
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| Abstract: |
| The composites of NiCo2O4/graphene oxide nanosheets(NiCo2O4/GO) were prepared through a facile hydrothermal route followed by calcination. The morphology and microstructure of the products were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM). It was found that the composite materials showed a sea urchin-like structure. Electrochemical properties were investigated using cyclic voltammetry and galvanostatic charge/discharge in 1 M KOH aqueous solution. In comparison with pure NiCo2O4, the specific capacity and rate performance of the as-made NiCo2O4/GO composites were significantly improved. This is mainly attributed to the high-density porous structures of the NiCo2O4/GO nanocomposites that were formed during the fabrication process. The NiCo2O4/GO composites showed good cyclic performance and coulomb efficiency with a specific capacitance over 650 F/g at a current density of 0.5 to 3.0 A/g, therefore they can be considered as a fine electrode material for surpercapactiors.
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| Key words: supercapacitor electrode material NiCo2O4 GO composite material |
