Three-dimensional embroidered ball-like α-Fe₂O₃ synthesised by a microwave hydrothermal method as a sulfur immobilizer for high-performance Li–S batteries

Abstract

The practical application of lithium-sulfur (Li-S) batteries is restrained by the sluggish conversion kinetics of lithium polysulfides (LiPSs) and the consequent shuttle effect. Using polar metal oxides as affinity substances...

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

“…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] . And the O=S bonds at 168.98 eV also confirmed the hydroxyl groups exhibit 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 FeÀ S, S 2p 3/2, S 2p 1/2 and O=S, respectively. [50][51][52] And the O=S bonds at 168.98 eV also confirmed the hydroxyl groups exhibit chemical adsorption of polysulfides.…”

Fe3O4-doped mesoporous carbon cathode with a plumber’s nightmare structure for high-performance Li-S batteries

“…In the resolution S 2p spectrum (Fig. 3Fd ), the peaks at 165.4 eV and 164.3 eV were ascribed to the S 2p 1/2 and 2p 3/2 states, respectively 71 . The peaks at 170.0 eV and 168.7 eV were assigned to thiosulfate 72 .…”

Inexhaustible natural celluloses in advanced Li–S batteries: a review

“…Among the various types of advanced energy storage systems, lithium-sulfur batteries (LSBs) have been regarded as one of the most promising candidates because of their exceptionally high theoretical energy density of 2600 W h kg À1 , at least 5 times higher than that of the state-of-the-art LIBs. 12,13 In addition, sulphur, as a cathode active material, possesses the intriguing advantages of low cost, safety, earth abundance, and environmental benignity, which makes it highly possible to achieve large-scale applications. 14 A traditional LSB consists of a cathode (sulfur incorporation), an anode (lithium metal), and electrolytes (including liquid organic electrolytes and separators).…”