| 氧化钴/镍核壳结构纳米线的合成及其在超级电容器的运用 |
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| 引用本文： | 邢方凯,任昊琦,季辰辰,张远平,杨生春. 氧化钴/镍核壳结构纳米线的合成及其在超级电容器的运用[J]. 稀有金属材料与工程, 2017, 46(11): 3253-3259 |
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| 作者姓名： | 邢方凯 任昊琦 季辰辰 张远平 杨生春 |
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| 作者单位： | 西安理工大学材料科学与工程学院,上海复旦大学化学系,西安交通大学理学院,西安交通大学理学院,西安交通大学理学院 |
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| 基金项目： | 国家自然科学基金 （No. 51271135） |
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| 摘 要： | 在本文中，我们通过两步法合成了具有核壳结构的CoO/NiO纳米线。透射电子显微镜的结果显示，CoO纳米线被NiO的纳米片层结构紧密包覆，同时该样品具有独特的多孔结构。由于其特殊结构，该样品用于超级电容器电极材料显示了优异的电容性能（当电流密度为1 A g-1时，其比电容能够达到708 F g-1），同时该样品显示了良好的倍率特性以及循环稳定性（当循环1000个周期后，其电容保持力为80 %），其电容性能明显优于单组份样品。这主要是由于CoO纳米线和NiO纳米片相比于单一组分能够为氧化还原反应提供更多的活性位点，这种协同作用有助于提高材料整体的比电容以及电化学稳定性。
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| 关 键 词： | 氧化钴，氧化镍，核壳，纳米线，超级电容器 |
| 收稿时间： | 2016-09-18 |
| 修稿时间： | 2016-12-03 |
Synthesis of Cobaltous Nickel Oxide Core/Shell Nanowires for Supercapacitors |
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| XingFangKai,RenHaoQi,JiChenChen,ZhangYuanPing and YangShengChun. Synthesis of Cobaltous Nickel Oxide Core/Shell Nanowires for Supercapacitors[J]. Rare Metal Materials and Engineering, 2017, 46(11): 3253-3259 |
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| Authors: | XingFangKai RenHaoQi JiChenChen ZhangYuanPing YangShengChun |
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| Affiliation: | School of Material Science and Engineering, Xi''an University of Technology, Xi''an, China,Department of Chemistry, Fudan University, Shanghai , People''s Republic of China,School of Science, MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an, People''s Republic of China.,School of Science, MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an, People''s Republic of China.,School of Science, MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi''an Jiaotong University, Xi''an, 710049, People''s Republic of China. |
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| Abstract: | CoO/NiO core/shell nanowires (NWs) were synthesized using an efficient two-step approach. The detailed structural analysis through the transmission electron microscopy indicated that the CoO NW core was well enclosed by the NiO nanoflake shell with an unique nanoporous structure. Benefits from these structural advantages, when the obtained CoO/NiO core/shell NW material was used as a supercapacitor electrode, it presented a much enhanced capacitance ( 708 F g-1 at 1 A g-1), better rate capability and excellent cycling performance (>80 % capacitance retention for 1000 cycles) compared with the single component samples. Besides, the synergetic interaction between the CoO NWs and NiO nanoflakes could produces more active sites for redox progresses than single material during the electrochemical reaction, which can provide synergistic effect to the capacitance and electrochemical stability. |
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| Keywords: | CoO NiO core/shell nanowires supercapacitor |
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