Construction of NiMoO4 nanorods@ZIF-67 derived Co3O4 supported on cellulose based carbon aerogel for asymmetric supercapacitors

  1. Meixia Wang,
  2. Jing ZhangORCID Logo,
  3. Xibin Yi,
  4. Benxue Liu,
  5. Xinfu Zhao and
  6. Xiaochan Liu

Submitting author affiliation: Advanced Materials Institute,Qilu University of Technology, Jinan, China

Beilstein Arch. 2019, 2019126. doi:10.3762/bxiv.2019.126.v1

Published 21 Oct 2019

  • Preprint

Abstract

In this study, NiMoO4 nanorods @ ZIF-67 derived Co3O4 material supported by cellulose based carbon aerogel (CA) is successfully synthesized by two-step hydrothermal method. Benefitting from hierarchical porous structure, large specific surface and chemical composition, the NiMoO4@Co3O4/CA ternary composite electrode delivers an enhanced specific capacitance of 1092.1 F/g at 0.5 A/g with the good rate capability (70.7% capacitance retention at 5.0 A/g). Besides, an advanced asymmetric supercapacitors (ASCs) is assembled by using the as-prepared NiMoO4@Co3O4/CA ternary composite as a positive electrode and activated carbon (AC) as negative. The results suggest that the ASCs device exhibits a large capacitance of 125.4 F/g at 0.5 A/g, a highest energy density of 34.1 Wh/kg at a power density of 208.8 W/kg as well as cycling stability (84% after 2000 cycles), suggesting its great applications in energy storage. Namely, our results may provide a general approach to construct carbon aerogel and various MOF based composite materials with hierarchical porous structure for potential applications in supercapacitor.

Keywords: Supercapacitors; Carbon aerogels; NiMoO4; ZIF-67 derived Co3O4; Hierarchically porous structure

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When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Wang, M.; Zhang, J.; Yi, X.; Liu, B.; Zhao, X.; Liu, X. Beilstein Arch. 2019, 2019126. doi:10.3762/bxiv.2019.126.v1

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