Palladium-Gold Nanoalloy Surface Modified LiMn2O4 Cathode for Enhanced Li-Ion Battery
| Autor: | Natasha Ross, Chinwe O. Ikpo, Wonderboy Ntuthuko, Myra Nzaba, Priscilla G. L. Baker, Emmanuel I. Iwuoha |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Article Subject Coprecipitation Spinel chemistry.chemical_element Nanotechnology engineering.material Conductivity Electrochemistry Cathode law.invention Chemical engineering chemistry law lcsh:Technology (General) engineering lcsh:T1-995 General Materials Science Lithium Calcination Palladium |
| Zdroj: | Journal of Nanomaterials, Vol 2015 (2015) |
| ISSN: | 1687-4129 1687-4110 |
| Popis: | Au with Pd nanoparticles were synthesized and coated onto the spinel LiMn2O4via a coprecipitation calcination method with the objective to improve the microstructure, conductivity, and electrochemical activities of pristine LiMn2O4. The novelLiPdAuxMn2-xO4composite cathode had high phase purity, well crystallized particles, and more regular morphological structures with narrow size distributions. At enlarged cycling potential ranges theLiPdAuxMn2-xO4sample delivered 90 mAh g−1discharge capacity compared to LiMn2O4(45 mAh g−1). It was concluded that even a small amount of the Pd and Au enhanced both the lithium diffusivity and electrochemical conductivity of the host sample due to the beneficial properties of their synergy. |
| Databáze: | OpenAIRE |
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