Improving the performance of high voltage LiMn1.5Ni0.5O4 cathode material by carbon coating
| Autor: | Martin Couillard, Svetlana Niketic, Dean D. MacNeil, Yaser Abu-Lebdeh |
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| Rok vydání: | 2014 |
| Předmět: |
Battery (electricity)
Materials science Renewable Energy Sustainability and the Environment Scanning electron microscope Spinel Analytical chemistry Energy Engineering and Power Technology chemistry.chemical_element Carbon coating Crystal structure engineering.material Electrochemistry High voltage symbols.namesake chemistry Transmission electron microscopy engineering symbols Li-ion battery Electrical and Electronic Engineering Physical and Theoretical Chemistry Raman spectroscopy Carbon Spinel cathode |
| Zdroj: | Journal of Power Sources. 271:285-290 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2014.08.015 |
| Popis: | In this work, the high voltage LiMn1.5Ni0.5O 4 cathode material has been synthesized as octadecahedron crystals with a disordered spinel structure and has been coated with a carbon layer from two different precursors (sucrose and Xerogel carbon) to improve its performance in Li-ion batteries. The effect of carbon coating on the physical and electrochemical properties of the crystals has been evaluated using X-ray diffraction (XRD), Infrared (IR) and Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), elemental and surface area (BET) analyses and battery cycling at different charge/discharge rates and temperatures. It was found that the amount of carbon, present as a thin layer (5-10 nm) and estimated at |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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