INVESTIGADORES
VELEZ Patricio
artículos
Título:
Modeling of substitutionally modified graphene structures to prevent the shuttle mechanism in lithium-sulfur batteries
Autor/es:
V√ČLEZ, PATRICIO; PARA, M. LAURA; LUQUE, GUILLERMINA L.; BARRACO, DANIEL; LEIVA, EZEQUIEL P.M.
Revista:
ELECTROCHIMICA ACTA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2019 vol. 309 p. 402 - 414
ISSN:
0013-4686
Resumen:
The interaction of polysulfides with graphene layers substitutionally modified with heteroatoms is analyzed using first-principles calculations, with the aim of using these structures to prevent polysulfide migration in lithium-sulfur batteries. The heteroatoms considered were B, N, O, F, Al, Si, P, S and Cl. An estimation of the residence time of the polysulfide on the doped surface was made based on transition state theory, with the finding that the most useful candidates may be graphene structures doped with Al or Si atoms.