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- Title
Facile Synthesis of Carbon-Metal Fluoride Nanocomposites for Lithium-Ion Batteries.
- Authors
Reddy, M. Anji; Breitung, Ben; Wall, Clemens; Trivedi, Shivam; Chakravadhanula, Venkata Sai Kiran; Helen, M.; Fichtner, Maximilian
- Abstract
Metal-fluoride-based conversion materials have gained interest as cathode materials for lithium-ion batteries due to their high theoretical energy densities. However, metal fluorides are electrically insulating and experience large volume changes during the charge and discharge processes. Effective synthesis of carbon-metal fluoride nanocomposites (CMFNCs) with stable morphology is one of the keys to achieve high capacities with sustainable cycle life. A general method for the synthesis of CMFNCs is described here. The redox-mediated reaction between CF x and metal-carbonyl precursors at relatively low temperatures leads to the formation of the respective CMFNCs. The reaction mechanism for the formation of CF x-derived C-FeF2 nanocomposites has been investigated. Also, the synthesis and lithium-storage properties of C-CoF2 and C-MoF3 nanocomposites are reported. In addition, by changing from CF x to graphite oxide and sulfur-infused porous carbon, the synthesis of C-FeO x and C-FeS nanocomposites is reported.
- Subjects
NANOCOMPOSITE materials; CATHODES
- Publication
Energy Technology, 2016, Vol 4, Issue 1, p201
- ISSN
2194-4288
- Publication type
Article
- DOI
10.1002/ente.201500358