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采用喷射电沉积工艺制备了多孔金属镍,并利用X射线衍射仪、扫描电镜等对其进行了表征;并以多孔金属镍为电化学电容器集流体,以纳米NiO为电活性物质组装成电化学电容器,采用循环伏安曲线、恒流充放电和交流阻抗、循环寿命等方法对电容器进行了电化学性能测试。结果表明:制备的多孔金属镍纯度较高,枝状晶围成三维连通孔隙,通孔分布均匀,比表面积大;该电化学电容器具有良好的电化学电容特性和电化学稳定性;电流密度为10mA·cm-2时,其初次放电比电容为589.2F·g-1,经过200次恒流循环充放电后放电比电容仅衰减了1.7%。

Porous metal nickel was prepared by jet electrodeposition technology and then was characterized by X-ray diffractermeter and scaning elecrtron microscopy. Use porous metal nickel as electrochemical capacitor current collector and nano-NiO as electroactive material to fit electrochemical capacitor. Electrochemical properties were tested by cyclic voltammetry curve, constant-current charge and discharge, A.C. impedance, cycle life and so on. The results show that the porous metal nickel prepared by the method had higher purity, dendritic crystal formed three-dimensional communicating pores, and the pores had uniform distribution and larger specific surface area. The electrochemical capacitor had better electrochemical capacitor property and dectrochemieal stability. The capacitance of the first discharge capacitor was 589. 2 F · g-1 when current density was 10 mA ·cm-2 , and the discharge capacitor reduced by 1.7% only after constant current charge and discharge for 200 cycles.

参考文献

[1] R. Kotz;M. Carlen .Principles and applications of electrochemical capacitors[J].Electrochimica Acta,2000(15/16):2483-2498.
[2] A.K.Shukla;A.S.Arico;V.Antonucci .An appraisal of electric automobile power sources[J].Renewable & sustainable energy reviews,2001(2):137-155.
[3] Zheng JP.;Jow TR.;Cygan PJ. .HYDROUS RUTHENIUM OXIDE AS AN ELECTRODE MATERIAL FOR ELECTROCHEMICAL CAPACITORS[J].Journal of the Electrochemical Society,1995(8):2699-2703.
[4] 王圣平,陈艳玲,吴金平,田熙科,代江华,杨全生,朱志刚.发泡镍作为Li/SOCl2电池正极集流体的研究[J].电池,2006(03):218-219.
[5] 刘培生,李铁藩,傅超,吕明.多孔金属材料的应用[J].功能材料,2001(01):12-15.
[6] 刘培生,黄林国.多孔金属材料制备方法[J].功能材料,2002(01):5-8,11.
[7] 邓梅根,杨邦朝,胡永达.纳米NiO的制备及其赝电容特性研究[J].材料工程,2005(05):19-21,26.
[8] 梁逵 .碳纳米管及氧化镍超级离子电容器的研究[D].电子科技大学,2002.
[9] 陈劲松,黄因慧,刘志东,田宗军,赵阳培.喷射电铸快速制造的试验研究[J].华南理工大学学报(自然科学版),2006(11):16-19,24.
[10] 宫凯,黄因慧,田宗军,刘志东,陈劲松,初晓辉.喷射电沉积制备多孔金属镍工艺[J].机械工程材料,2008(08):40-42,46.
[11] 原长洲,张校刚,高博.碱性全固态纳米晶NiO电容器的电化学电容特性[J].应用化学,2006(12):1346-1349.
[12] 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(07):1289-1292.
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