Bimetallic CoMoS Composite Anchored to Biocarbon Fibers as a High-Capacity Anode for Li-Ion Batteries
| Autor: | Russell R. Chianelli, Yirong Lin, Brenda Torres, Julio Rincon, Juan C. Noveron, Luis A. Barrera, Noemi Dominguez, Md. Ariful Ahsan |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Carbonization General Chemical Engineering Composite number 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy Article 0104 chemical sciences Ion Anode lcsh:Chemistry Cellulose fiber lcsh:QD1-999 Chemical engineering Hydrothermal synthesis 0210 nano-technology Bimetallic strip |
| Zdroj: | ACS Omega, Vol 3, Iss 8, Pp 10243-10249 (2018) ACS Omega |
| ISSN: | 2470-1343 |
| Popis: | Our work reports the hydrothermal synthesis of a bimetallic composite CoMoS, followed by the addition of cellulose fibers and its subsequent carbonization under Ar atmosphere (CoMoS@C). For comparison, CoMoS was heat-treated under the same conditions and referred as bare-CoMoS. X-ray diffraction analysis indicates that CoMoS@C composite matches with the CoMoS4 phase with additional peaks corresponding to MoO3 and CoMoO4 phases, which probably arise from air exposure during the carbonization process. Scanning electron microscopy images of CoMoS@C exhibit how the CoMoS material is anchored to the surface of carbonized cellulose fibers. As anode material, CoMoS@C shows a superior performance than bare-CoMoS. The CoMoS@C composite presents an initial high discharge capacity of ∼1164 mA h/g and retains a high specific discharge capacity of ∼715 mA h/g after 200 cycles at a current density of 500 mA/g compared to that of bare-CoMoS of 102 mA h/g. The high specific capacity and good cycling stability could be attributed to the synergistic effects of CoMoS and carbonized cellulose fibers. The use of biomass in the anode material represents a very easy and cost-effective way to improve the electrochemical Li-ion battery performance. |
| Databáze: | OpenAIRE |
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