Hydrothermal Synthesis of Co3O4/ZnCo2O4 Core-Shell Nanostructures for High-Performance Supercapacitors Academic Article uri icon


  • Supercapacitive properties of Co/ZnCo oxide composite with a coreshell nanostructure (Co3O4/ZnCo2O4) prepared directly onto a nickel foam substrate by a two-step hydrothermal method were investigated. The synthesized coreshell structure consisted of some 40100 nm in thick flaky ZnCo2O4 deposits coated onto the surface of Co3O4 nanorods measuring 150 nm in diameter. The specific capacitance value of the Co3O4/ZnCo2O4 coreshell nanostructure synthesized by hydrothermal at 130 C for a ZnCo2O4 deposition time of 2 h can attain 1804 F g1 at a scan rate of 5 mV s1. Furthermore, the coreshell structured electrode still exhibited a relatively good capacitance retention of more than 93% after 3000 CV cycles due to the superior structural support of Co3O4 scaffolds. The Co3O4/ZnCo2O4 coreshell structure exhibits excellent electrochemical performances and, as such, is one of the more promising active materials in pseudocapacitor applications.

published proceedings


author list (cited authors)

  • Lin, E., Chao, F., Liang, C., Chang, C., Fang, A., Lin, C., ... Chen, C.

citation count

  • 2

complete list of authors

  • Lin, En-Syuan||Chao, Feng-Sheng||Liang, Chen-Jui||Chang, Chi-Jung||Fang, Alex||Lin, Chung-Kwei||Chang, Yu-Cheng||Tsay, Chien-Yie||Wu, Jerry J||Chen, Chin-Yi

publication date

  • January 2021