Highly efficient Co3O4/CeO2 heterostructure as anode for lithium-ion batteries
| Autor: | Yu-Hang Zhang, Qi Shi, H. L. Shi, Fa-Nian Shi, Dongfeng Xue, Ying Kang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
chemistry.chemical_element Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Lithium-ion battery 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Ion Biomaterials Colloid and Surface Chemistry chemistry Chemical engineering Electrical resistivity and conductivity Lithium 0210 nano-technology Mesoporous material Microwave |
| Zdroj: | Journal of Colloid and Interface Science. 585:705-715 |
| ISSN: | 0021-9797 |
| Popis: | Co3O4 has been extensively studied as an anode material for lithium-ion batteries (LIBs) because of its high theoretical capacity. However, during the charging-discharging processes, the issues of large volume change and low electric conductivity arise, which significantly limit the practical applications of Co3O4. To solve these issues, a Co3O4/CeO2 heterostructure derived from metal-organic frameworks (MOFs) was designed and synthesized through one-step microwave synthesis. Benefiting from the mesoporous structure and presence of hetero-components, Co3O4/CeO2 having the molar ratio of Co/Ce = 5:1 (denoted as 5Co3O4/CeO2) exhibits high reversible capacity and excellent cycling stability when used as an anode material for LIBs. Specifically, compared to a single-phase Co3O4 anode, which shows a capacity of 538.6 mAh/g after 100 cycles, 5Co3O4/CeO2 exhibits a higher capacity (1131.2 mAh/g at 100 mA/g). This study provides a novel strategy for using rare earth components to modify electrode materials. |
| Databáze: | OpenAIRE |
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