High-performance lithium–sulfur batteries using hierarchical Fe2O3/Ketjen black composites as sulfur host materials

Flower‐like Fe(OH)3 as Sulfur Hosts for High‐Performance Lithium–Sulfur Batteries

“…In the Fe 2p high‐resolution spectra of the S@FH (Figure 5b), two peaks are observed at binding energies 711.18 and 724.98 eV, which are correspond to the characteristics of Fe 2p 3/2 and Fe 2p 1/2 peaks, while an Fe 2p satellite peak is observed from 722.06 to 716.86 eV [45–47] . Similarly, in the high‐resolution spectrum of O 1s (Figure 5c), two peaks located at approximately 530.08 and 531.78 eV have been identified as the Fe–O and O=S bonds, [48,49] where the O=S bonds strongly indicate that hydroxyl groups exhibit strong chemical adsorption of polysulfides. In Figure 5d, after fitting the S 2p spectrum, four peaks are observed at the adsorption energies of 162.48, 163.58, 164.48 and 168.98 eV, consistent with Fe−S, S 2p 3/2, S 2p 1/2 and O=S, respectively [50–52] .…”

Recent advances in modified commercial separators for lithium–sulfur batteries

“…The highly adsorptive Co and nitrogen centers embedded in the porous carbon were then able to efficiently adsorb and immobilize LiPSs. Similarly, highly polar metal salts like metal oxides, [253][254][255] suldes, 256,257 uorides, 258 and selenides, 259 exhibit good adsorption for poly-suldes. While not the most effective against polysulde rejection, porous carbons have also been composited with doped graphene and CNTs.…”