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Journal of Electrochemistry ›› 2016, Vol. 22 ›› Issue (5): 513-520.doi: 10.13208/j.electrochem.160544

• Special Issue on Energy Electrochemical Materials(Guest Editor: Professor Jun Chen) • Previous Articles     Next Articles

Template-Assisted Hydrothermal Synthesis of NiO@Co3O4 Hollow Spheres with Hierarchical Porous Surfaces for Supercapacitor Applications

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

  1. 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 Online:2016-10-28 Published: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).


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.

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