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多孔Co(OH)2的制备及其超电容特性
Synthesis and Electrochemical Capacitance of Porous Co(OH)2
【摘要】 利用十二烷基磺酸钠作为软模板、尿素作为水解剂合成了具有高比表面积(283 m2/g)纳米微孔结构的电化学电容器材料Co(OH)2。XRD测试表明,Co(OH)2具有层状结构。SEM分析表明,Co(OH)2具有20~30 nm的微孔的疏松结构。循环伏安、恒流充放电、交流阻抗和循环寿命测试均表明该材料具有良好的电容性能。单电极比电容可达到320 F/g。
【Abstract】 The porous Co(OH)2 was synthesized with SDS(Sodium dodecyl Sulfate) as the soft template and urea as the hydrolysis agent.XRD and SEM were used to characterize the synthesized porous(Co(OH)2),which possesse a layered structure with a pore-size of 2030 nm.All electrochemical tests show that the porous Co(OH)2 has a good capacity due to its unique porous structure and a high surface(area) of 283 m2/g.The highest specific capacitance of 320 F/g was obtained for the as-prepared Co(OH)2 at a current density of 5×103 A/cm2.
【基金】 国家自然科学基金(20403014)资助项目
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2006年04期
- 【分类号】TM53
- 【被引频次】38
- 【下载频次】572