INVESTIGADORES
ORTIZ Mariela Gisela
congresos y reuniones científicas
Título:
Electrochemical Activation of Super-P Carbon for Lithium-Sulfur Battery Cathodes
Autor/es:
NICOLAS HOFFMAN; SOFÍA GÓMEZ; ORTIZ, MARIELA G.; A. VISINTIN
Lugar:
Antofagasta
Reunión:
Workshop; 7th International Workshop on Lithium, Industrial Minerals and Energy (IWLiME); 2020
Institución organizadora:
Universidad de Antofagasta
Resumen:
In this work, super-P carbon was modified by mechanical milling at 800 rpm for 30 minutes in ammonium hydroxide [6]. The resulting material was dried for 24 hours for use as a sulfur scaffold, which was brought into its pores through a melt-diffusion treatment at 155ºC for 12 hours. The electrochemical behavior of the resulting material as the active ingredient in a lithium-sulfur cathode was evaluated in CR-2032 cells with a polypropylene Celgard H2010 separator and a lithium anode, compared to unmodified carbon used as the active ingredient.The initial capacity of the modified material after 10 cycles was 470 mAhg-1 compared to 410 mAhg-1 for the unmodified carbon, while the capacities on the first couple cycles were both around 600 mAhg-1as shown in Figure 1. This demonstrates that modifying carbon has improved its capacity retention.
