| 碳包覆纳米SnO2中空纤维的制备及电容性能 |
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| 引用本文： | 韩笑梅,吴艳波,赵恒彦,毕军,魏斌斌. 碳包覆纳米SnO2中空纤维的制备及电容性能[J]. 物理化学学报, 2015, 31(11): 2220-2228. DOI: 10.3866/PKU.WHXB201510131 |
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| 作者姓名： | 韩笑梅 吴艳波 赵恒彦 毕军 魏斌斌 |
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| 作者单位： | 1 大连交通大学材料科学与工程学院,辽宁大连1160282 大连交通大学环境与化学工程学院,辽宁大连116028 |
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| 基金项目： | the National Natural Science Foundation of China(21076028);National Training Programs of lnnovation andEntreprenurship for Undergraduates, China(201410150016) |
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| 摘 要： | 采用同轴静电纺丝法制备了碳包覆纳米SnO2中空纤维超级电容器电极材料.利用X射线衍射(XRD)、拉曼光谱、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和比表面积分析仪(BET)对材料进行表征.结果表明,纤维呈现中空形貌,平均直径为1 μm; SnO2颗粒均匀分布于碳壳结构中,平均粒径为3-15 nm.材料的比表面积为565 m2·g-1.在三电极体系中,当电流密度为0.25 A·g-1时,电极材料的比容量达397.5 F·g-1;在1.0A·g-1电流密度下,充放电循环3000次后比容量仍保持为初始值的88%.在对称型双电极体系中,电流密度为0.25 A·g-1时,电极材料的比容量达162.0 F·g-1,在1.0 A·g-1电流密度下,充放电循环3000次后比容量仍保持为初始值的84%.
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| 关 键 词： | 同轴静电纺丝 碳包覆纳米SnO2 中空结构 超级电容器 |
| 收稿时间： | 2015-04-27 |
Preparation and Supercapacitor Properties of Carbon-Coated SnO2 Hollow Fibers |
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| Xiao-Mei. HAN,Yan-Bo. WU,Heng-Yan. ZHAO,Jun. BI,Bin-Bin. WEI. Preparation and Supercapacitor Properties of Carbon-Coated SnO2 Hollow Fibers[J]. Acta Physico-Chimica Sinica, 2015, 31(11): 2220-2228. DOI: 10.3866/PKU.WHXB201510131 |
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| Authors: | Xiao-Mei. HAN Yan-Bo. WU Heng-Yan. ZHAO Jun. BI Bin-Bin. WEI |
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| Affiliation: | 1. College of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, P. R. China;2. College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, P. R. China |
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| Abstract: | A new carbon-coated SnO2 hollow fiber was successfully prepared by coaxial electrospinning, and its supercapacitor properties were well studied. The surface morphology and structure were examined using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and the Brunauer-Emmett-Teller (BET) method. The results showed hollow fibers of average diameter 1 μm and carbon-coated SnO2 particles of average size 3-15 nm uniformly distributed on the fiber shell. The surface area was 565 m2·g-1. In a three-electrode system, the electrode achieved a respectable specific capacitance of 397.5 F·g-1 at 0.25 A·g-1, and the capacitance retained ratio was still 88% of the initial value after 3000 cycles at 1.0 A·g-1. In the case of a symmetrical two-electrode system, the electrode achieved a specific capacitance of 162.0 F·g-1 at 0.25 A·g-1 current density, and the capacitance retained ratio was 84% of the initial value after 3000 cycles at 1.0 A·g-1. |
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| Keywords: | Coaxial electrospinning Carbon-coated nano-SnO2 Hollow structure Supercapacitor |
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