| 类普鲁士蓝为前驱体制备纳米NiO及其电化学电容行为 |
| Preparation and Electrochemical Capacitance of Nickel Oxide with Prussian Blue Analogue as Precursor |
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| 摘要: |
| 关键词: 超级电容器 纳米结构 氧化镍 类普鲁士兰 |
| 基金项目: |
| Abstract: Nanosized nickel oxide was synthesized by immersing the precursor NiHCNFe into 1 mol·L-1 KOH solution to obtain nickel hydroxide (Ni(OH)2) and then annealing in air at 300 ℃. X-ray diffraction (XRD) and transmission electron microscopy (TEM) tests showed the prepared samples were rhombohedral crystalline structure of NiO with uniform grain and with a diameter of about 8 nm. Electrochemical properties of NiO were examined by cyclic voltammetry, ac impedance and galvanostatic charge-discharge tests. The results demonstrated that nickel oxide had a good capacitive behavior and cyclability due to its nanostructure. The highest specific capacitance of nickel oxide was about 303 F·g-1 at a charge/discharge current density of 5 mA·cm-2 in 6 mol·L-1 KOH solution. |
| Keywords: supercapacitors nanostructured nickel oxide Prussia Blue analogue |
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| 高博,张校刚,原长洲,李娟.类普鲁士蓝为前驱体制备纳米NiO及其电化学电容行为[J].无机化学学报,2006,22(7):1289-1292. |
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