This article describes two ways to recover valuable and ecologically critical active materials from spent lithium-ion electrodes and electrode production rejects, using the example of a system containing LiNi 0.33Co0.33Mn0.33O2 (NMC) active material and a polyvinylidene fluoride (PVdF) binder. First, a physical process using thermal treatment and mechanical stressing to separate the coating from the aluminum foil is discussed. Furthermore, a wet chemical processing using the solvent n-methyl-2-pyrrolidone (NMP) is presented. Recovered coating materials from both processes were characterized by laser diffraction spectroscopy and atomic absorption spectroscopy. Additionally, recycling electrodes were produced and successfully tested in battery test cells.
CITATION STYLE
Hanisch, C., Haselrieder, W., & Kwade, A. (2011). Recovery of active materials from spent lithium-ion electrodes and electrode production rejects. In Glocalized Solutions for Sustainability in Manufacturing - Proceedings of the 18th CIRP International Conference on Life Cycle Engineering (pp. 85–89). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-642-19692-8_15
Mendeley helps you to discover research relevant for your work.