Lithium-ion (Li-ion) batteries are in the front edge of recent achievements concerning energy storage.
However, Li-ion devices are reaching their maximum regarding energy density storage which restricts their
appiicatíon in systems with large power needs, such as electric vehicles. Driven by this shortcoming, in the
last few years, Lithium-Sulfur (Li-S) batteries are being considered as an alternative for the exploitatíon of
energy storage and conversion systems with improved performance. Indeed, to the S cathodes is associated
a theoretical specifíc capacity of 1672 mA h g-1 and a specifíc energy of 2600 W h kg-\ which are several
times higher than the correspondent to other possible systems. The relative low atomic weight of S in
comparison with other elements (e.g. cobalt) and the multí-electron transfer reactíons in the pair Li/S are at
the source ofthis superior theoretícal performance of Li-S batteries.Este trabalho foi financiado por: projeto POCI-01-0145-FEDER-006984 - Laboratório Associado LSRE-LCM - financiado pelo Fundo Europeu de Desenvolvimento Regional (FEDER), através do COMPETE2020 – Programa Operacional Competitividade e Internacionalização (POCI)info:eu-repo/semantics/publishedVersio
