A Sustainable Approach for Producing Ti and TiS2 from TiC

Ahmadi, Eltefat; Suzuki, Ryosuke O.; Kaneko, Takeaki; Kikuchi, Tatsuya

doi:10.1007/s11663-020-01988-5

Cited by 7 publications

(4 citation statements)

References 49 publications

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“…At 600 °C, the sulfur powder was turned into sulfur gas and reacted with MXene according to the reaction as follows: Ti 3 C 2 T x + S → Ti 3 C 2 T x ’ + TiS 2 + CS 2 (g). [ 40 ] Moreover, the formation of TiS 2 on the surface of MXene made the surrounding areas prone to being oxidized by numerous O/OH‐terminal groups, [ 41 ] thereby leading to the in situ formation of TiO 2 /TiS 2 @MXene heterostructure.…”

Section: Resultsmentioning

confidence: 99%

Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Nguyen

Park

Shim

et al. 2023

Adv Funct Materials

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The poor cycling stability and low volumetric energy density of lithium–sulfur batteries compared with lithium‐ion batteries are hindering their practical applications. Here, it is demonstrated that a dense sulfur electrode containing heavy TiS2/TiO2@MXene heterostructures can tackle these issues. It is observed that the TiO2 part functionally anchors the lithium polysulfides through the strong chemical affinity, and the TiS2 part serves as an efficient electrocatalyst to enhance the kinetics of sulfur evolution reactions. Benefitting from these synergistic effects, the TiS2/TiO2@MXene heterostructures effectively suppress the shuttle effects, leading to superior cyclability of the sulfur cathode with a low capacity decay of 0.038% per cycle for 500 cycles at a current rate of 1 C. More encouragingly, a highly dense S/TiS2/TiO2@MXene cathode exhibits a high volumetric energy density of 2476 Wh L−1 (based on the volume of the composite) at a high sulfur mass loading of 7.5 mg cm−2 and lean electrolyte of 5 µL mg−1. The electrochemical performance is comparable to or even superior to the lithium‐ion and lithium–sulfur batteries reported in the literature. This study provides an effective strategy to design stable and high‐volumetric‐energy‐density lithium–sulfur batteries for practical energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Nguyen

Park

Shim

et al. 2023

Adv Funct Materials

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“…Furthermore, the analysis using Fourier transformation analysis confirmed the presence of TiS 2 on the surface of the sample. Based on the above results, it can be reasonably assumed that the formation mechanism of TiS 2 @TiO 2 @MXene is as follows: Ti 3 C 2 T x + S → Ti 3 C 2 T x + TiS 2 + CS 2 (g) [40]. Furthermore, partial TiS 2 species can transform to TiO 2 , derived from the abundant -O/-OH terminations on the surface of MXene nanosheets [41].…”

Section: Morphology and Chemical Compositionmentioning

confidence: 87%

Engineering Ti3C2-MXene Surface Composition for Excellent Li+ Storage Performance

Chen,

Fan,

et al. 2024

Molecules

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Exploiting novel materials with high specific capacities is crucial for the progress of advanced energy storage devices. Intentionally constructing functional heterostructures based on a variety of two-dimensional (2D) substances proves to be an extremely efficient method for capitalizing on the shared benefits of these materials. By elaborately designing the structure, a greatly escalated steadiness can be achieved throughout electrochemical cycles, along with boosted electron transfer kinetics. In this study, chemical vapor deposition (CVD) was utilized to alter the surface composition of multilayer Ti3C2Tx MXene, contributing to contriving various layered heterostructure materials through a precise adjustment of the reaction temperature. The optimal composite materials at a reaction temperature of 500 °C (defined as MX500), incorporating MXene as the conductive substrate, exhibited outstanding stability and high coulombic efficiency during electrochemical cycling. Meanwhile, the reactive sites are increased by using TiS2 and TiO2 at the heterogeneous interfaces, which sustains a specific capacity of 449 mAh g−1 after 200 cycles at a current density of 0.1 A g−1 and further demonstrates their exceptional electrochemical characteristics. Additionally, the noted pseudocapacitive properties, like MXene materials, further highlight the diverse capabilities of intuitive material design. This study illuminates the complex details of surface modification in multilayer MXene and offers a crucial understanding of the strategic creation of heterostructures, significantly impacting sophisticated electrochemical applications.

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“…Experimentally, TiN is remarkably better than TiC with regard to residual impurities. 66) The Ti waste containing nitrogen and carbon can be used as the starting material if it is easily converted to TiS 2 .…”

Section: Nitridesmentioning

confidence: 99%

Recent Studies on Titanium Refining: 2017–2020

2021

Self Cite

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Titanium oxide can be converted directly to its metallic state. This extraordinary technology is realized in a CaCl 2 -based molten salt that can extract oxygen ions from the cathode. Several discussions have been exchanged in the field of electrochemistry and metallurgy in the last two decades. Recent papers on titanium refining are overviewed by selecting popular papers, especially those published in this journal, Materials Transactions. Basic and scientific studies on titanium and its refining are briefly analyzed, and some practical applications are introduced in related oxide reductions and the corresponding molten salts.

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A Sustainable Approach for Producing Ti and TiS2 from TiC

Cited by 7 publications

References 49 publications

Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Engineering Ti3C2-MXene Surface Composition for Excellent Li+ Storage Performance

Recent Studies on Titanium Refining: 2017–2020

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A Sustainable Approach for Producing Ti and TiS2 from TiC

Cited by 7 publications

References 49 publications

Accelerated Sulfur Evolution Reactions by TiS2/TiO2@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Accelerated Sulfur Evolution Reactions by TiS2/TiO2@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Engineering Ti3C2-MXene Surface Composition for Excellent Li+ Storage Performance

Recent Studies on Titanium Refining: 2017–2020

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Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries

Accelerated Sulfur Evolution Reactions by TiS₂/TiO₂@MXene Host for High‐Volumetric‐Energy‐Density Lithium–Sulfur Batteries