Comparison of electrospun and conventional LiFePO4/C composite cathodes for Li-ion batteries
| Autor: | Maximilian Kaus, Krystyna Bachtin, Lukas Pfaffmann, Christina Roth, Michael Knapp, Sylvio Indris, Helmut Ehrenberg |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology Carbon black engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Electrospinning 0104 chemical sciences Ion Coating Mechanics of Materials Phase (matter) Electrode engineering General Materials Science Composite material 0210 nano-technology Electrical conductor |
| Zdroj: | Materials Science and Engineering: B. 213:98-104 |
| ISSN: | 0921-5107 |
| Popis: | In order to apply low conductive materials, such as LiFePO4, in lithium-ion batteries, a conductive additive like carbon black is commonly used to build an electronic transport path between the active particles. The connection between active phase and conductive media has a dominant influence on electrochemical properties and lifetime of batteries. We compare the performance and properties of electrodes which were prepared in two different ways with the same LiFePO4 nanopowder as the active phase. The electrodes were prepared in a conventional route, based on the commonly used powder-suspension coating on metallic foils and in an alternative route, based on the electrospinning method. As a result, the obtained electrodes have different structures and connections between the active and conductive phase, which has an influence on the electrode behavior during cycling. The accessible high thickness and variable density of the electrodes are the main advantages of the electrodes prepared by electrospinning. |
| Databáze: | OpenAIRE |
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