氢氧化镍纳米片的制备及其超级电容性能
On Preparation and Supercapacitive Performance of Ni (OH)2 Nanoflakes
-
摘要: 以尿素和氯化镍为原料，采用水热法制备了泡沫镍载Ni（OH）2纳米片电极，利用扫描电镜（SEM）观测了纳米片的形貌，利用X 射线衍射（XRD）分析了纳米片的结构，通过循环伏安和恒流充放电测试了电极的超级电容性能．检测结果表明：所制备的Ni（O H ）2纳米片先构成一种交错连接的线状结构，再以线的形式均匀而密集地覆盖在泡沫镍的骨架上．这种特殊结构使得该纳米片电极表现出良好的电容性能，在电流密度为10 mA／cm2的情况下，其面积比电容为255 m F／cm2．Abstract: The electrode of Ni(OH)2 nanoflakes standing on nickel foam has been prepared in hydrothermal method .Its morphology has been examined by scanning electron microscopy (SEM ) ,the phase structure of Ni(OH)2 has been analyzed by X-ray diffraction spectroscopy (XRD) ,and the electrochemical capaci-tance of the electrode been investigated by cyclic voltammetry and galvanostatic charge-discharge test .T he results show that Ni(OH)2 nanoflakes grow on and densely cover the nickel foam substrate .The Ni foam/Ni(OH)2 nanoflakes electrode has a high specific capacitance of 255 mF/cm .
-
-
计量
- 文章访问数: 683
- HTML全文浏览数: 292
- PDF下载数: 28
- 施引文献: 0
下载: