Preparation and Characterization of Graphite Anodes For Lithium Ion Batteries

R. M. HUMANA; M. G. ORTIZ; J. E. THOMAS; S. G. REAL; M. SEDLARIKOVA; J. VONDRAK; A. VISINTIN

ECS Transactions

The Electrochemical Society

Año: 2014 vol. 63 p. 91 - 97

1938-6737

The lithium-ion batteries are energy storage systems of highperformance and low cost. They are employed in multiple portabledevices and these require the use of increasingly smaller and lighterbatteries with high energy and power density, fast charging andlong service life. Moreover, these systems are promising for use inelectric or hybrid vehicles. However, the lithium-ion battery stillrequires to improve the electrode materials properties, such as cost,energy density, cycle life, safety, and environmental compatibility.These batteries use carbon as anode material, usually syntheticgraphite, because of its high coulombic efficiency and acceptablespecific capacity for the formation of intercalation compounds(LiC6). In this paper the methodology used to prepare andcharacterize the reversible and irreversible capacity and, cyclicstability of graphite materials as anodes in lithium-ion batteries ofcommercial carbon and Sungite carbon, is presented. The resultsobtained using electrochemical techniques, are discussed.