Excellent electrochemical performance of LiFe0.4Mn0.6PO4 microspheres produced using a double carbon coating process
Data(s) |
28/11/2014
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Resumo |
Composite LiFe0.4Mn0.6PO4/C microspheres are considered advanced cathode materials for electric vehicles and other high-energy density applications due to their advantages of high energy density and excellent cycling stability. LiFe0.4Mn0.6PO4/C microspheres have been produced using a double carbon coating process employing traditional industrial techniques (ball milling, spray-drying and annealing). The obtained LiFe0.4Mn0.6PO4 microspheres exhibit a high discharge capacity of around 166 mA h g-1 at 0.1 C and excellent rate capabilities of 132, 103, and 72 mA h g-1 at 5, 10, and 20 C, respectively. A reversible capacity of about 152 mA h g-1 after 500 cycles at a current density of 1 C indicates an outstanding cycling stability. The excellent electrochemical performance is attributed to the micrometer-sized spheres of double carbon-coated LiFe0.4Mn0.6PO4 nanoparticles with improved electric conductivity and higher Li ion diffusion coefficients, ensuring full redox reactions of all nanoparticles. The results show that the advanced high-energy density cathode materials can be produced using existing industry techniques. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Royal Society of Chemistry |
Relação |
DP130102311 http://dro.deakin.edu.au/eserv/DU:30069233/huang-excellentelectro-2014.pdf http://www.dx.doi.org/10.1039/c4ta03994g |
Direitos |
2014, Royal Society of Chemistry |
Palavras-Chave | #Science & Technology #Physical Sciences #Technology #Chemistry, Physical #Energy & Fuels #Materials Science, Multidisciplinary #Chemistry #Materials Science #LITHIUM-ION BATTERIES #SOL-GEL TECHNIQUE #CATHODE MATERIAL #KINETIC-ANALYSIS #OLIVINE CATHODE #THIN-FILMS #LIFEPO4 #COPRECIPITATION #COMPOSITES #ELECTRODE |
Tipo |
Journal Article |