Aplicación de ánodos basados en titanato de litio para almacenamiento electroquímico de energía: prototipos de baterías de ion litio

CHAUQUE SUSANA; FABIANA Y. OLIVA; CÁMARA, OSVALDO R.

Bitácora Digital

Facultad de Ciencias Químicas

Lugar: Córdoba; Año: 2017 vol. 4

2344-9144

n the present article it is reported experimental results corresponding to the electrochemical performance of two lithium titanate active materials (LTO), synthesized by ceramic method and previously characterized, to be used as a negative electrode in prototypes of lithium ion batteries (BILs). These materials were galvanostatically cycled to long times using metallic lithium as an auxiliary electrode, showing an excellent reversibility in the charging and discharging processes along 300 cycles. From the variation of the specific capacity values as a function of the number of cycles, it was possible to estimate that these materials have the capacity to support the galvanostatic cycling during 450-500 cycles before decreasing to 80% of the initial capacity. Two prototypes of BILs were assembled, using the LTO materials as negative electrode and a commercial lithium iron phosphate (LFP) compound as positive electrode. The electrochemical behavior of the prototypes was in excellent agr