Characterization of Anodes For Lithium-Ion Batteries

RITA M. HUMANA.; MARIELA G. ORTIZ; JORGE E. THOMAS; SILVIA G. REAL; MARIE SEDLARÍKOVÁ; JIRÍ VONDRÁK; ARNALDO VISINTIN

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (PRINT)

SPRINGER

Lugar: Berlin; Año: 2015

1432-8488

The lithium-ion batteries are energy storage systems of high performance and low cost.They are employed in multiple portable devices and these require the use ofincreasingly smaller and lighter batteries with high energy and power density, fastcharging and long service life. Moreover, these systems are promising for use inelectric or hybrid vehicles. However, the lithium-ion battery still requires theimprovement of the electrode materials properties, such as cost, energy density, cyclelife, safety, and environmental compatibility. These batteries use carbon as anodematerial, usually synthetic graphite, because of its high coulombic efficiency andacceptable specific capacity for the formation of intercalation compounds (LiC6). In thispaper the methodology used to prepare and characterize the reversible andirreversible capacity and, cyclic stability of graphite materials as anodes in lithium-ionbatteries of commercial carbon and shungite carbon, is presented. The resultsobtained using electrochemical techniques are discussed.These electrodes exhibited good activation process and high-rate dischargeabilityperformance. For carbon and shungite electrodes the maximum discharge capacityvalues were 259 m A hg-1 and 170 mA h g-1 respectively.