A facile synthesis of self-assembling reduced graphene oxide/cobalt carbonate hydroxide papers for high-performance supercapacitor applications

  • Long Jiao
  • Xuexue Pan
  • Yunlong Xi
  • Junzhi Li
  • Junming Cao
  • Qing GuoEmail author
  • Wei HanEmail author


Electrode materials as an important component for the supercapacitors (SC) mainly undertake energy storage. Hence, the research hotspots in the SC fields are focused on the active materials of the electrode. In this study, we have provided a facile synthesis method to prepare reduced graphene oxide (RGO) and cobalt carbonate hydroxide (Co(CO3)0.5(OH)0.11·H2O) nanorod composites. The RGO films were obtained by vacuum filtration of GO papers and hydrothermal method. And during this hydrothermal, Co(CO3)0.5(OH)0.11·H2O nanorods also grow on the surface of RGO films. The as-fabricated RGO/Co(CO3)0.5(OH)0.11·H2O composites are characterized by SEM, EDS, XRD measurement. According to the electrochemical research results, the RGO/Co(CO3)0.5(OH)0.11·H2O electrodes own an ultrahigh volumetric capacitance of 1627 F cm−3 at a current density of 0.5 A g−1. Besides, the energy density of the symmetrical supercapacitor (SSc) assembled with the RGO/Co(CO3)0.5(OH)0.11·H2O electrode material is 9.22 mW h cm−3, and the capacity can be maintained 100.0% after 10,000 cycles when the composite material at the current density of 1 A g−1, these promote an efficient electrode material for electrochemical supercapacitor applications.



The authors sincerely acknowledge financial support from National Natural Science Foundation of China (NSFC Grant Nos. 21571080), the Nature Science Foundation of Jilin Province (20170101193JC).

Supplementary material

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Supplementary material 1 (DOC 1478 KB)


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Jilin Supercapacitor Engineering Laboratory, College of PhysicsJilin UniversityChangchunChina
  2. 2.International Center of Future ScienceJilin UniversityChangchunChina
  3. 3.School of Physics and Electronic EngineeringLinyi UniversityLinyiChina

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