Microwave- or conventional-hydrothermal synthesis of Co-based materials for electrochemical energy storage

Kunfeng Chen, Young Dong Noh, Rinkal R. Patel, Wenyan Huang, Jianfeng Ma, Keyan Li, Sridhar Komarneni, Dongfeng Xue

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Crystalline Co3O4 and Co(OH)2 were synthesized using Co(NO3)2 as a precursor by conventional-hydrothermal and microwave-hydrothermal routes, respectively. The Co3O4 phase showed cubic morphologies while the β-Co(OH)2 phase exhibited plate-like shapes. The electrochemical performances of Co3O4 and Co(OH)2 phases were evaluated as electrode materials for lithium-ion battery anodes, cathodes and supercapacitors. Both Co3O4 and Co(OH)2 phases showed pseudocapacitive performances in Li2SO4 and KOH electrolytes. The Co3O4 and Co(OH)2 phases were found to be more promising as anodes than as cathodes in lithium-ion batteries. The Co(OH)2 electrodes showed higher specific capacitances than those of Co3O4 materials.

Original languageEnglish (US)
Pages (from-to)8183-8188
Number of pages6
JournalCeramics International
Volume40
Issue number6
DOIs
StatePublished - Jul 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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