Sulfur—Selenium and Sulfur—Phosphorus Compounds

Nickson, R. M.; Limited, AgrEvo Uk; Walden, Saffron

doi:10.4324/9780203362525_chapter_7

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, the chromatogram of the polysulfides mixed with SeS 2 displays a significant increase of elemental sulfur with minimal change of polysulfide distribution, as shown in Figure 4 and Table S3, which can be possibly attributed to the existence of impurities in SeS 2 . 26 The chromatogram of SeS 2 without polysulfides shown in Figure S11 further confirms the presence of elemental sulfur and other cyclo-Se x S y (x + y = 8) in the purchased SeS 2 sample, reflecting its stoichiometric composition with a molecular ratio of Se and S of 1:2. Similarly, Bi 2 S 3 also has elemental sulfur impurities in the purchased sample, as shown in Figure S12.…”

Section: Resultsmentioning

confidence: 81%

“…Molecular sieves 4 Å exhibit an interesting interaction with the polysulfides, evident in a shift of polysulfide distribution toward longer-chain polysulfides without the increase in elemental sulfur, as shown in Figure and Table S5. Additionally, the chromatogram of the polysulfides mixed with SeS 2 displays a significant increase of elemental sulfur with minimal change of polysulfide distribution, as shown in Figure and Table S3, which can be possibly attributed to the existence of impurities in SeS 2 . The chromatogram of SeS 2 without polysulfides shown in Figure S11 further confirms the presence of elemental sulfur and other cyclo-Se x S y ( x + y = 8) in the purchased SeS 2 sample, reflecting its stoichiometric composition with a molecular ratio of Se and S of 1:2.…”

Section: Resultsmentioning

confidence: 87%

See 1 more Smart Citation

Chemical Interactions between Dissolved Polysulfides and Potential Catalytic Host Materials for Li–S Batteries

Zheng,

Qiu,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Given that both elemental sulfur (S 8 ) and lithium sulfide (Li 2 S) exhibit insulating properties, the involvement of conductive host materials becomes crucial for facilitating charge transfer in sulfur cathodes within lithium−sulfur (Li−S) batteries. Furthermore, there has been a recent surge in the exploration of host materials for sulfur cathodes to address the "polysulfide shuttle" effect. This effect arises from the formation of polysulfide species during the charge−discharge cycles of the Li−S batteries and can be mitigated through physical or chemical interactions with specific materials. To qualitatively and accurately assess the interactions between polysulfides and the potential host materials, this study utilized a well-established high-performance liquid chromatography method for polysulfide analysis. The objective was to monitor the changes in polysulfide solutions after contact with 44 different carbon and inorganic materials. Based on both qualitative and quantitative chromatographic results, it was determined that 20 out of the 44 materials exhibit significant interactions with polysulfides. The primary form of interaction observed is the irreversible disproportionation reaction with elemental sulfur being one of the resulting products.

show abstract

Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 87%