Technical and economic analysis of solvent-based lithium-ion electrode drying with water and NMP |
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Authors: | David L Wood Jeffrey D Quass Jianlin Li Shabbir Ahmed David Ventola Claus Daniel |
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Affiliation: | 1. Oak Ridge National Laboratory, Energy and Transportation Science Division, National Transportation Research Center, Knoxville, TN, USA;2. Babcock &3. Wilcox MEGTEC, De Pere, WI, USA;4. Argonne National Laboratory, Chemical Sciences and Engineering Division, Argonne, IL, USA |
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Abstract: | Processing lithium-ion battery (LIB) electrode dispersions with water as the solvent during primary drying offers many advantages over N-methylpyrrolidone (NMP). An in-depth analysis of the comparative drying costs of LIB electrodes is discussed for both NMP- and water-based dispersion processing in terms of battery pack $/kWh. Electrode coating manufacturing and capital equipment cost savings are compared for water vs. conventional NMP organic solvent processing. A major finding of this work is that the total electrode manufacturing costs, whether water- or NMP-based, contribute about 8–9% of the total pack cost. However, it was found that up to a 2?×?reduction in electrode processing (drying and solvent recovery) cost can be expected along with a $3–6?M savings in associated plant capital equipment (for a plant producing 100,000 10-kWh Plug-in Hybrid Electric Vehicle (PHEV) batteries) using water as the electrode solvent. This paper shows a different perspective in that the most important benefits of aqueous electrode processing actually revolve around capital equipment savings and environmental stewardship and not processing cost savings. |
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Keywords: | Coatings energy analysis heat and mass transfer porous media transport phenomena |
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