Lightweight Polymer-Carbon Composite Current Collector for Lithium-Ion Batteries
| Autor: | Fritsch, Marco, Coeler, Matthias, Kunz, Karina, Krause, Beate, Marcinkowski, Peter, Pötschke, Petra, Wolter, Mareike, Michaelis, Alexander |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
current collector
CNTs water based electrode slurries water-based electrode slurries carbon primer lithium-ion battery bipolar battery lcsh:Production of electric energy or power. Powerplants. Central stations lcsh:Industrial electrochemistry lcsh:TK1001-1841 LTO lithium ion battery polymer-carbon composite LMNO lcsh:TP250-261 |
| Zdroj: | Batteries, Vol 6, Iss 60, p 60 (2020) Batteries Volume 6 Issue 4 |
| ISSN: | 2313-0105 |
| Popis: | A hermetic dense polymer-carbon composite-based current collector foil (PCCF) for lithium-ion battery applications was developed and evaluated in comparison to state-of-the-art aluminum (Al) foil collector. Water-processed LiNi0.5Mn1.5O4 (LMNO) cathode and Li4Ti5O12 (LTO) anode coatings with the integration of a thin carbon primer at the interface to the collector were prepared. Despite the fact that the laboratory manufactured PCCF shows a much higher film thickness of 55 µ m compared to Al foil of 19 µ m, the electrode resistance was measured to be by a factor of 5 lower compared to the Al collector, which was attributed to the low contact resistance between PCCF, carbon primer and electrode microstructure. The PCCF-C-primer collector shows a sufficient voltage stability up to 5 V vs. Li/Li+ and a negligible Li-intercalation loss into the carbon primer. Electrochemical cell tests demonstrate the applicability of the developed PCCF for LMNO and LTO electrodes, with no disadvantage compared to state-of-the-art Al collector. Due to a 50% lower material density, the lightweight and hermetic dense PCCF polymer collector offers the possibility to significantly decrease the mass loading of the collector in battery cells, which can be of special interest for bipolar battery architectures. |
| Databáze: | OpenAIRE |
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