CX.—Action of sulphur monochloride on mercaptans
01 Jan 1923-Journal of The Chemical Society, Transactions (The Royal Society of Chemistry)-Vol. 123, pp 964-968
About: This article is published in Journal of The Chemical Society, Transactions.The article was published on 1923-01-01. It has received 8 citations till now.
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TL;DR: This work adds new members to the cathode family for Li-S batteries, reduces the gap between the theoretical and practical energy densities of batteries, and provides a new direction for the development of alternative high-capacity cathode materials.
Abstract: Sulfur-based cathodes are promising to enable high-energy-density lithium–sulfur batteries; however, elemental sulfur as active material faces several challenges, including undesirable volume change (∼80%) when completely reduced and high dependence on liquid electrolyte wherein an electrolyte/sulfur ratio >10 μL mg–1 is required for high material utilization. These limit the attainable energy densities of these batteries. Herein, we introduce a new class of phenyl polysulfides C6H5SxC6H5 (4 ≤ x ≤ 6) as liquid cathode materials synthesized in a facile and scalable route to mitigate these setbacks. These polysulfides possess sufficiently high theoretical specific capacities, specific energies, and energy densities. Spectroscopic techniques verify their chemical composition and computation shows that the volume change when reduced is about 37%. Lithium half-cell testing shows that phenyl hexasulfide (C6H5S6C6H5) can provide a specific capacity of 650 mAh g–1 and capacity retention of 80% through 500 cycles ...
60 citations
01 Jan 2018
TL;DR: In this paper, a new class of phenyl polysulfides C6H5SxC6H 5 (4 ≤ x ≤ 6) as liquid cathode materials synthesized in a facile and scalable route to mitigate these setbacks.
Abstract: Sulfur-based cathodes are promising to enable high-energy-density lithium–sulfur batteries; however, elemental sulfur as active material faces several challenges, including undesirable volume change (∼80%) when completely reduced and high dependence on liquid electrolyte wherein an electrolyte/sulfur ratio >10 μL mg–1 is required for high material utilization. These limit the attainable energy densities of these batteries. Herein, we introduce a new class of phenyl polysulfides C6H5SxC6H5 (4 ≤ x ≤ 6) as liquid cathode materials synthesized in a facile and scalable route to mitigate these setbacks. These polysulfides possess sufficiently high theoretical specific capacities, specific energies, and energy densities. Spectroscopic techniques verify their chemical composition and computation shows that the volume change when reduced is about 37%. Lithium half-cell testing shows that phenyl hexasulfide (C6H5S6C6H5) can provide a specific capacity of 650 mAh g–1 and capacity retention of 80% through 500 cycles ...
47 citations
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TL;DR: In this article, the synthesis of 1,2,4-thiadiazoles is classified according to the nature of the fragments from which the heterocyclic ring is built.
Abstract: Publisher Summary 1,2, 4-thiadiazole derivatives have recently found important uses and have attained industrial and economic importance. The syntheses of 1,2,4-thiadiazoles are classified according to the nature of the fragments, from which the heterocyclic ring is built. There are five possible ways in which this can be done: by ring closing a preformed chain consisting of the five appropriate atoms in the correct sequence, by condensing a chain of four atoms with the complementary fifth atom, and by performing [2+3] cycloadditions. The number of permutations does increase when three or more smaller fragments join to form the ring; since this requires the operation of reactions of the third or higher order, these are not considered in detail. One such reaction is, nevertheless, on record (Type H). The chapter describes types of synthesis of 1,2, 4-Thiadiazoles—namely, Type A, Type B, Type C, Type E, Type F (L and M), Type G, Type H, Type J, and unclassified syntheses. The chapter discusses physical, chemical, and biological properties of 1,2, 4-thiadiazole. In addition to the important well-established applications such as pesticides, herbicides, and azo dyes, 1,2, 4-thiadiazoles are of actual or potential value in several technical fields. Derivatives incorporating sulfur-containing functions are especially prominent in this context.
40 citations
TL;DR: In this paper, a novel bismuth ion-selective electrode (ISE) was prepared by dispersing the Bismuth sulfide nanoparticles in polyvinylchloride (PVC) membrane.
Abstract: Nanoparticles of bismuth sulfide were prepared in the organic phase and the optimum synthesis conditions for the nanoparticles were studied in detail. Transmission electron microscope (TEM) results indicated that the size distribution of the nanoparticles was proportional with an average diameter of 46.4 nm. A novel bismuth ion‐selective electrode (ISE) was prepared by dispersing the bismuth sulfide nanoparticles in polyvinylchloride (PVC) membrane. The linear range was 1.00×10−8∼1.00×10−4 mol L−1 and the detection limit was 8.10×10−9 mol L−1. The response of the electrode was fast with quite reasonable reproducibility and stability. It was used to determine bismuth in three kinds of stomach medicines and the results were in good agreement with the flame atomic absorption spectrometry (FAAS) method.
32 citations
Cites methods from "CX.—Action of sulphur monochloride ..."
...The concentration of thioacetamide in anhydrous ethanol was 4.5 1023 mol L21 because thioacetamide could release only about 20% sulfide ions under this condition (Chakravarti 1923)....
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17 citations