Preparation and Characterization of Graphite Anode for Lithium Ion Batteries

HUMANA RM; MARIELA GISELA ORTIZ; SILVIA GRACIELA REAL; J. E. THOMAS; M. SEDLARIKOVA; J. VONDRAK; A. VISINTIN

Brno

Congreso; 15th International Conference Advanced Batteries, Accumulators and Fuel Cells [ABAF 15th; 2014

Faculty of Electrical Engineering and Communication, Brno University of Technology

The lithium-ionbatteries are energy storage systems of high performance and low cost. They areemployed in multiple portable devices and these require the use of increasinglysmaller and lighter batteries with high energy and power density, fast chargingand long service life. Moreover, these systems are promising for use inelectric or hybrid vehicles. However, the lithium-ion battery still requires toimprove  the electrode materialsproperties, such as cost, energy density, cycle life, safety, and environmentalcompatibility. These batteries use carbon as anode material, usually syntheticgraphite, because of its high coulombic efficiency and acceptable specificcapacity for the formation of intercalation compounds (LiC6). In this paper themethodology used to prepare and characterize the reversible and irreversiblecapacity and, cyclic stability of graphite materials as anodes in lithium-ionbatteries of commercial carbon and Sungite carbon, is presented. The resultsobtained using electrochemical techniques, arediscussed