| 模板法制备的掺镧氧化镍多孔空心微球及电化学电容性能 |
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| 引用本文： | 韩丹丹,景晓燕,王 君,张密林.模板法制备的掺镧氧化镍多孔空心微球及电化学电容性能[J].无机化学学报,2012,28(8):1547-1554. |
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| 作者姓名： | 韩丹丹 景晓燕 王 君 张密林 |
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| 作者单位： | 1. 哈尔滨工程大学材料科学与化学工程学院,哈尔滨 150001;吉林化工学院化学与制药工程学院,吉林132022
2. 哈尔滨工程大学材料科学与化学工程学院,哈尔滨,150001 |
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| 基金项目： | 国家博士点资助基金，中央高校基础研究基金，吉林省教育厅科学技术研究课题资助项目 |
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| 摘 要： | 采用模板法在水热条件下合成了掺La的NiO多孔空心球。采用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)、透射电子显微镜(TEM)和X射线能谱(EDS)对其结构和形貌进行了表征。采用循环伏安、恒流充放电技术对其电化学性能进行了测试,研究结果表明,La掺杂对NiO空心球的粒径、壳层厚度和电化学性能均有显著影响,当La掺杂量为1.30mol%时,掺杂后NiO的单电极比电容达到205 F.g-1,比未掺杂的提高了50%,并且表现出良好的循环稳定性和可逆性。
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| 关 键 词： | 模板法 水热 NiO空心球 La掺杂 电容性能 |
La Doped NiO Microporous Hollow Spheres by Template Method and Its Electrochemical Capacitive Properties |
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| HAN Dan-Dan,JING Xiao-Yan,WANG Jun and ZHANG Min-Lin.La Doped NiO Microporous Hollow Spheres by Template Method and Its Electrochemical Capacitive Properties[J].Chinese Journal of Inorganic Chemistry,2012,28(8):1547-1554. |
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| Authors: | HAN Dan-Dan JING Xiao-Yan WANG Jun and ZHANG Min-Lin |
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| Institution: | College of Materials Science and Chemical Engineering, Habin Engineering University, Harbin 150001, China; College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China,College of Materials Science and Chemical Engineering, Habin Engineering University, Harbin 150001, China,College of Materials Science and Chemical Engineering, Habin Engineering University, Harbin 150001, China and College of Materials Science and Chemical Engineering, Habin Engineering University, Harbin 150001, China |
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| Abstract: | Lanthanum doped nickel oxide using colloidal carbon spheres as hard template was developed to prepare NiO∶La3+ microporous hollow spheres.The morphology and structure of the product was characterized by X-ray diffraction(XRD),X-ray photoelectron spectrometer(XPS),scanning and transmission electron microscopies(SEM,TEM) and energy dispersive spectrometer(EDS).Their electrochemical performance as a supercapacitor electrode material was investigated comparatively by cyclic voltammetry(CV),galvanostatic charge-discharge.The experimental results indicated that La-doping did not change the structure of NiO,but greatly affected the particle size and the thickness of the shell,considerably enhanced the electrochemical performance of NiO.A specific capacitance of 205 F·g-1 was obtained when the mole ratio of La ion was 1.30%,which was 50% higher than that of the undoped material.Moreover,La-doping significantly improved the capacitance stability and reversibility. |
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| Keywords: | template method hydrothermal NiO hollow electrochemical capacitance |
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