模板法合成NiO@Co3O4空心多孔小球及其储电性能的研究

doi:10.13208/j.electrochem.160544

电化学（中英文） ›› 2016, Vol. 22 ›› Issue (5): 513-520. doi: 10.13208/j.electrochem.160544

• 能源电化学材料近期研究专辑（南开大学陈军教授） • 上一篇下一篇

模板法合成NiO@Co₃O₄空心多孔小球及其储电性能的研究

周文，卢雪峰，吴明娒*，李高仁*

中山大学化学与化学工程学院，广东广州 510275

收稿日期:2016-05-23 修回日期:2016-07-20 出版日期:2016-10-28 发布日期:2016-08-01
通讯作者: 吴明娒，李高仁 E-mail:ligaoren@mail.sysu.edu.cn; ceswmm@mail.sysu.edu.cn
基金资助:
This work was supported by National Natural Science Foundation of China (51173212), National Basic Research Program of China (2015CB932304), Natural Science Foundation of Guangdong Province (S2013020012833), Project of High Level Talents in Higher School of Guangdong Province, and Science and Technology Planning Project of Guangdong Province (2013B010403011).

Template-Assisted Hydrothermal Synthesis of NiO@Co₃O₄Hollow Spheres with Hierarchical Porous Surfaces for Supercapacitor Applications

ZHOU Wen, LU Xue-feng, WU Ming-mei*, LI Gao-ren*

MOE Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China

Received:2016-05-23 Revised:2016-07-20 Published:2016-10-28 Online:2016-08-01
Contact: WU Ming-mei, LI Gao-ren E-mail:ligaoren@mail.sysu.edu.cn; ceswmm@mail.sysu.edu.cn
Supported by:
This work was supported by National Natural Science Foundation of China (51173212), National Basic Research Program of China (2015CB932304), Natural Science Foundation of Guangdong Province (S2013020012833), Project of High Level Talents in Higher School of Guangdong Province, and Science and Technology Planning Project of Guangdong Province (2013B010403011).

摘要/Abstract

摘要：

空心结构在能量转化和储存等重要应用方面，展现出了巨大的潜力. 为了进一步提高性能，根据物质的组成和结构，合理设计出更复杂的空心结构材料是非常必要的，但目前仍然存在相当大的挑战. 本文报导了一种以硅小球作为模板的高效方法，合成了新型的NiO@Co₃O₄空心多孔小球，其比表面积可达219.68 m²·g^-1. NiO@Co₃O₄空心多孔小球的高比表面积有利于增强离子的扩散和提高活性物质的利用效率，并可防止纳米颗粒团聚. 测试结果表明，在5 mV·s^-1的扫描速度下，所制备的NiO@Co₃O₄空心多孔小球的比电容值达1140.9 F·g^-1，同时具有良好的循环稳定性，显示出该材料在超级电容器领域有较好的应用前景.

关键词: 空心多孔小球, 一氧化镍/四氧化三钴, 硅小球模板, 高比表面积, 超级电容器

Abstract:

Hollow structures have shown great potentials in a variety of important applications, such as energy conversion and storage. In order to further enhance the performance, the rational design of hollow structures with higher complexity in terms of composition and structure is highly desirable and still remains a great challenge. In this work, an efficient strategy was established for the fabrication of novel NiO@Co₃O₄ hollow spheres (HSs) with hierarchical porous surfaces by silica spheres template-assisted hydrothermal synthesis. The as-fabricated NiO@Co₃O₄ HSs showed high specific surface area of 219.68 m²·g^-1, and significant enhancement in ion diffusion and utilization rate, as well as effective prevention in nanoparticle agglomeration. When used as electrodes, the NiO@Co₃O₄ HSs exhibited a large specific capacitance of 1140.9 F·g^-1 at the scan rate of 5 mV·s-1 and excellent cycling stability, suggesting a promising application for supercapacitors.

中图分类号:

O646

周文，卢雪峰，吴明娒，李高仁. 模板法合成NiO@Co₃O₄空心多孔小球及其储电性能的研究[J]. 电化学（中英文）, 2016, 22(5): 513-520.

ZHOU Wen, LU Xue-feng, WU Ming-mei, LI Gao-ren. Template-Assisted Hydrothermal Synthesis of NiO@Co₃O₄Hollow Spheres with Hierarchical Porous Surfaces for Supercapacitor Applications[J]. Journal of Electrochemistry, 2016, 22(5): 513-520.

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模板法合成NiO@Co₃O₄空心多孔小球及其储电性能的研究

Template-Assisted Hydrothermal Synthesis of NiO@Co₃O₄Hollow Spheres with Hierarchical Porous Surfaces for Supercapacitor Applications

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