A method to quantify coating thickness and porosity of electrodes for lithium-ion-batteries
| Autor: | Ph. Just, Michael Roscher, T. Echelmeyer, Lars Ebert, J. Rost |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
020209 energy Applied Mathematics 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Active layer Thermal conductivity Coating Thermal Electrode 0202 electrical engineering electronic engineering information engineering engineering Forensic engineering Slurry Electrical and Electronic Engineering Thin film Composite material 0210 nano-technology Porosity Instrumentation |
| Zdroj: | Measurement. 89:312-315 |
| ISSN: | 0263-2241 |
| DOI: | 10.1016/j.measurement.2016.04.001 |
| Popis: | For manufacturing the electrodes of lithium-ion batteries a active material slurry is casted onto a metallic foil and dried, thereafter. Due to stringent quality requirements regarding the porous layer of active material control systems are implemented in the production line which are capable to detect contaminations and check the homogeneity of the active material film application. This work presents the active thermography as method for real time testing of electrodes’ active layer thickness and basis weight. In experimental investigations a correlation between the electrodes’ thermal characteristics and the geometry could be found, confirming that: First, thin films with a high porosity heat up faster, during thermal excitation, than thicker and more compressed films. Second, denser electrodes comprise a higher thermal conductivity and hence heat up and cool down slower than films comprising higher porosities. Both aspects are crucial findings and enable the development of innovative in-line electrode inspections systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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