Synthesis of Mesoporous Co₃O₄/NiCo₂O₄ Nanorods and Their Electrochemical Study

Suxia Cui; Taotao Li; Chunli Guo; Linlin Wang; Chunchen Zhang; Zeying Yan; Yinghui Wei; Lifeng Hou; Lichun Xu; Chuankun Jia

doi:10.1166/jnn.2019.16448

Synthesis of Mesoporous Co₃O₄/NiCo₂O₄ Nanorods and Their Electrochemical Study

J Nanosci Nanotechnol. 2019 Jan 1;19(1):47-56. doi: 10.1166/jnn.2019.16448.

Authors

Suxia Cui¹, Taotao Li¹, Chunli Guo¹, Linlin Wang², Chunchen Zhang¹, Zeying Yan¹, Yinghui Wei¹, Lifeng Hou¹, Lichun Xu³, Chuankun Jia⁴

Affiliations

¹ College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
² College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, P. R. China.
³ College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
⁴ College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China.

PMID: 30327001
DOI: 10.1166/jnn.2019.16448

Abstract

Mesoporous Co₃O₄/NiCo₂O₄ nanorods were obtained by a hydrothermal reaction with the assistance of Ni foam and subsequent annealing treatment. The characterization of this composition by X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, energy dispersive spectra and Brunauer-Emmett-Teller analysis revealed that the nanorods consisted of Co₃O₄ and NiCo₂O₄ phase, exhibiting high porosity and rich crystal defects. The electrochemical data showed a specific capacitance of 1173 mF cm^-2 and 606 mF cm^-2 at 2 mV s^-1 and 1 mA cm^-2, respectively. Its cycling performance was 83.9% at 3 mA cm^-2 after 4000 cycles. Furthermore, the asymmetric supercapacitor Co₃O₄/NiCo₂O₄//AC delivered an energy density of 11.7 W h kg^-1 and power density of 760 W kg^-1.