info:eu-repo/semantics/article
Improving the polysulfide barrier by efficient carbon nanofibers coating on separator/cathode for Li-S batteries
Fecha
2020-07Registro en:
García Soriano, Francisco Javier; Para, Maria Laura; Luque, Guillermina Leticia; Barraco Diaz, Daniel Eugenio; Leiva, Ezequiel Pedro M.; et al.; Improving the polysulfide barrier by efficient carbon nanofibers coating on separator/cathode for Li-S batteries; Springer; Journal of Solid State Electrochemistry (print); 24; 10; 7-2020; 2341-2351
1432-8488
1433-0768
CONICET Digital
CONICET
Autor
García Soriano, Francisco Javier
Para, Maria Laura
Luque, Guillermina Leticia
Barraco Diaz, Daniel Eugenio
Leiva, Ezequiel Pedro M.
Lener, German
Resumen
High-power high-density lithium rechargeable batteries are necessary to meet the energy demand of electric vehicles and high-power stationary grids. Here, we present a straightforward method for obtaining carbon nanofibers (CNFs) as a polysulfide barrier in Li-S cells, resulting in a significant increase in cell performance. CNFs were coated both on the separator and on the cathode. The CNF-coated cathode showed a specific capacity of 1010 mA h g−1 after 250 cycles at 0.2 C, with a capacity fading of 0.021% per cycle. In addition, at 1 C, it delivered 946 mA h g−1, thus presenting a fast Li+ transport with a good capacity. This result turns CNFs-coated cathodes into a promising system for obtaining high-performance Li-S cells.