Room temperature large-scale synthesis of layered frameworks as low-cost 4V 
cathode materials for lithium ion batteries

Hameed, A.; Reddy, M.; Nagarathinam, M.; Runčevski, T.; Dinnebier, R. E.; Adams, S.; Chowdari, B.; Vittal, J.

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Room temperature large-scale synthesis of layered frameworks as low-cost 4V cathode materials for lithium ion batteries

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Dinnebier, R. E.
Scientific Facility X-Ray Diffraction (Robert E. Dinnebier), Max Planck Institute for Solid State Research, Max Planck Society;

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Adams, S.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Hameed, A., Reddy, M., Nagarathinam, M., Runčevski, T., Dinnebier, R. E., Adams, S., et al. (2015). Room temperature large-scale synthesis of layered frameworks as low-cost 4V cathode materials for lithium ion batteries. Scientific Reports, 5: 16270.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C9D8-C

Abstract

Li-ion batteries (LIBs) are considered as the best available technology to push forward the production of eco-friendly electric vehicles (EVs) and for the efficient utilization of renewable energy sources. Transformation from conventional vehicles to EVs are hindered by the high upfront price of the EVs and are mainly due to the high cost of LIBs. Hence, cost reduction of LIBs is one of the major strategies to bring forth the EVs to compete in the market with their gasoline counterparts. In our attempt to produce cheaper high-performance cathode materials for LIBs, an rGO/MOPOF (reduced graphene oxide/Metal-Organic Phosphate Open Framework) nanocomposite with similar to 4 V of operation has been developed by a cost effective room temperature synthesis that eliminates any expensive post-synthetic treatments at high temperature under Ar/Ar-H-2. Firstly, an hydrated nanocomposite, rGO/K-2[(VO)(2)(HPO4)(2)(C2O4)]center dot 4.5H(2)O has been prepared by simple magnetic stirring at room temperature which releases water to form the anhydrous cathode material while drying at 90 degrees C during routine electrode fabrication procedure. The pristine MOPOF material undergoes highly reversible lithium storage, however with capacity fading. Enhanced lithium cycling has been witnessed with rGO/MOPOF nanocomposite which exhibits minimal capacity fading thanks to increased electronic conductivity and enhanced Li diffusivity.