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Cobalt oxide nanocomposites modified by NiCo-layered double hydroxide nanosheets as advanced electrodes for supercapacitors

  • Xiaoqiang Dai
  • Yatang DaiEmail author
  • Jinghua LuEmail author
  • Linyu Pu
  • Wei Wang
  • Jie Jin
  • Fei Ma
  • Ning Tie
Original Paper


Transition metal oxides with metallic composites are attractive for advanced electrodes due to their high capacitance, high conductivity, and low cost. Here, a multihierarchical structure (NiCo LDH/M Co3O4, M is the mass of Co3O4) of NiCo-layered double hydroxide (NiCo LDH) nanosheets uniformly grown on the surface cobalt oxide (Co3O4) is synthesized via a mild hydrothermal method. In particular, the NiCo LDH/50 mg Co3O4 nanocomposite material has the advantages of large specific surface area, wealthy aperture, high pseudo-capacitance, and small internal resistance. Electrochemical investigation reveals that the NiCo LDH/50 mg Co3O4 is rather outstanding, which delivers high energy density, long-life supercapacitor as a positive electrode material. It is worth mentioning that the specific surface area and specific capacitance of NiCo LDH/50 mg Co3O4 are threefolds and fivefolds that of pure Co3O4, respectively. The specific capacitance of NiCo LDH/50 mg Co3O4 is 1393.9 F g−1 at 1 A g−1 with outstanding cycle stability (88.4% up to 5000 cycles). The aqueous asymmetric supercapacitor (ASC) was assembled by employing the NiCo LDH/50 mg Co3O4 as positive electrode and activated carbon (AC) as negative electrode, which delivers a voltage window of 1.5 V and a high energy density of 46.4 Wh kg−1 at a power density of 750.4 W kg−1. These excellent properties make it a promising candidate in electrochemical energy storage materials.


NiCo LDH Co3O4 Nanocomposite Supercapacitor 



Also we are grateful for the help of Analytical and Testing Center of Southwest University of Science and Technology.

Funding information

This work was supported by the Key Science Program Funded by the Education Department of Sichuan Province (No. 15ZA0117), SWUST Longshan Academic Talent Research Support Program (No. 18lzx403) and the Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology (No. 18fksy0207).

Supplementary material

11581_2019_3333_MOESM1_ESM.docx (2.1 mb)
ESM 1 (DOCX 4319 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyangPeople’s Republic of China
  2. 2.School of ScienceSouthwest University of Science and TechnologyMianyangPeople’s Republic of China

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