| 无模板法合成具有分级结构的多孔氧化镍及其电容性能研究(英文) |
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| 引用本文： | 吴中,黄芸,张新波.无模板法合成具有分级结构的多孔氧化镍及其电容性能研究(英文)[J].电化学,2012(2):151-156. |
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| 作者姓名： | 吴中 黄芸 张新波 |
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| 作者单位： | 中国科学院长春应用化学研究所稀土资源利用国家重点实验室;中国科学院研究生院;吉林大学 汽车材料教育部重点实验室,材料科学与工程学院 |
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| 基金项目： | supported by 100 Talents Programme of the Chinese Academy of Sciences and National Natural Science Foundation of China(No.21101147) |
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| 摘 要： | 应用无模板水热法制备了由超薄氧化镍纳米片组装而成的具有分级结构的多孔氧化镍,SEM观察表明经煅烧氧化镍仍保持花状球形结构.电化学测试结果表明,扫速为20 mV.s-1时,其比电容值435 F.g-1,循环1000周期之后,电容值基本没有衰减;电流密度为10 A.g-1时,其比电容值为367 F.g-1.该材料是一种有应用价值的超级电容器材料.
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| 关 键 词： | 超级电容器 氧化镍 分级结构 无模板 电化学稳定性 |
Template-Free Synthesis of Porous NiO Hierarchical Structure for High Performance Supercapacitors |
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| WU Zhong,HUANG Yun,ZHANG Xin-bo.Template-Free Synthesis of Porous NiO Hierarchical Structure for High Performance Supercapacitors[J].Electrochemistry,2012(2):151-156. |
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| Authors: | WU Zhong HUANG Yun ZHANG Xin-bo |
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| Institution: | 1* ( 1. State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China; 2. Graduate School of the Chinese Academy of Sciences,Beijing 100039,China; 3. Key Laboratory of Automobile Materials,Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130012,China) |
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| Abstract: | A facile and template-free hydrothermal method is proposed to successfully synthesize porous NiO hierarchical structure,which is found to be assembled from ultrathin NiO nanosheets. As for electrochemical pseudocapacitor applications,the obtained material exhibits not only high specific capacitances of 435 F.g - 1 at 20 mV.s - 1 and 367 F.g - 1 at 10 A.g - 1 ,but also holds a good electrochemical stability over 1000 cycles at a current rate of 20 mV.s - 1 . These results suggest that the hierarchical structured porous NiO is a promising supercapacitor electrode material. |
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| Keywords: | supercapacitor NiO hierarchical structure template-free electrochemical stability |
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