Microwave- or conventional–hydrothermal synthesis of Co-based materials for electrochemical energy storage
| Autor: | Keyan Li, Sridhar Komarneni, Jianfeng Ma, Young Dong Noh, Rinkal R. Patel, Kunfeng Chen, Wenyan Huang, Dongfeng Xue |
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| Rok vydání: | 2014 |
| Předmět: |
Supercapacitor
Battery (electricity) Materials science Process Chemistry and Technology Inorganic chemistry Electrolyte Electrochemistry Lithium-ion battery Pseudocapacitance Surfaces Coatings and Films Electronic Optical and Magnetic Materials Chemical engineering Electrode Materials Chemistry Ceramics and Composites Hydrothermal synthesis |
| Zdroj: | Ceramics International. 40:8183-8188 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2014.01.014 |
| Popis: | 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 beta-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. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| Databáze: | OpenAIRE |
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