| 基于导电基底的多孔银耳状氧化镍的电化学行为 | |
| Porous Tremella-like NiO on Conductive Substrates with High Electrochemical Performance | |
| 摘要: 采用化学沉淀法,在导电基底上原位生长多孔状氧化镍.采用X射线衍射(XRD)、扫描电镜(SEM)和透射电子显微镜(TEM)对其结构和形貌进行了表征.采用循环伏安、恒流充放电技术和交流阻抗对其电化学性能进行了测试.结果表明,由于泡沫镍导电基底增强了电极的导电性,充分利用各组成单元的多孔特性,在电流密度为0.5 A·g-1时,电极的比容量达到3.5 F·cm-2 (705 F·g-1),同时电极具有较好的倍率特性(电容保持率68.1%)和稳定的长循环寿命(3 000次循环后电极比容量增加17.6%). | |
| 关键词: 氧化镍 超级电容器 化学沉淀法 导电基底 | |
| 基金项目: 国家自然科学基金项目(No.21401073)吉林省科技厅青年基金项目(No.20140520097JH)、博士科研启动基金(No.2014161)、吉林化工学院 科技项目(No.2014064)资助. | |
| Abstract: Porous tremella-like NiO on conductive substrates have been fabricated by a facile chemical bath deposition approach and further investigated as the binder-free electrode for high-performance supercapacitors. The microstructure and morphologies of the resulting materials were characterized by XRD, SEM, TEM, and electrochemical measurements. Owing to the superior electrical conductivity, the porous structure of the NiO microspheres combinated the advantages of each subunit can deliver a high areal capacitance of 3.5 F·cm-2 and a corresponding specific capacitance of 705 F·g-1 at a current density of 0.5 A·g-1, as well as a good rate capability (68.1% capacitance retention from 0.5 A·g-1 to 8 A·g-1), and excellent cycling stability (17.6% capacitance increasing after 3000th cycling at high current density 12 A·g-1). | |
| Keywords: nickel oxide supercapacitor chemical bath deposition conductive substrate | |
| 投稿时间：2015-08-22 修订日期：2016-01-09 | |
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| 韩丹丹,徐鹏程,谭奥,于江微,张立平,张涛.基于导电基底的多孔银耳状氧化镍的电化学行为[J].无机化学学报,2016,32(3):527-536. | |
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