Mechanochemically synthesized Ag2S–Sb2S3 amorphous fast ionic conductors

Tiwari, J. P.; Shahi, K.

doi:10.1016/j.mseb.2007.05.004

Cited by 15 publications

(5 citation statements)

References 48 publications

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“…Ag ions are not firmly held in lattice sites or anion cages and thus have great freedom of movement . Recently, several studies reported a series of chalcogenide glasses and glass‐ceramics showing a large room‐temperature ionic conductivity of 9.18 × 10 –3 S/cm in 2.5GeS 2 –27.5Sb 2 S 3 –70AgI glass, 1.01 × 10 –3 S/cm in 40 (0.8Sb 2 S 3 –0.2Ga 2 S 3 )–60AgI, and 5.4 × 10 –3 S/cm in 0.85Ag 2 S–0.15Sb 2 S 3 chalcogenide systems . The fast Ag ion conductive glass electrolytes exhibit composition flexibility and ease of film or fiber production and thus have a prospect of being used in rechargeable batteries.…”

Section: Introductionmentioning

confidence: 99%

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Zhang

Jiao

et al. 2019

J Am Ceram Soc

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AgI‐based Ge–Sb–S, Ga–Sb–S, and Ge–Ga–Sb–S chalcogenide glasses were designed and prepared by melt‐quenching, thereafter their thermal properties and conductive performance were comparatively investigated on the basis of their composition‐induced network structures. Glass transition in each sample was examined by DSC measurements. Results showed that the samples containing Ge had a higher thermal stability than the Ga–Sb–S–AgI sample, and the Ge–Sb–S–AgI sample obtained had the highest conductivity ion. Raman spectrum analysis was performed, and the results indicated that the [GeS4‐xIx] structural units and [SbS3−xIx] pyramids in the matrix produced effective ion transport channel for dissolved conductive Ag+ ions. In the matrix containing Ga, the [Ga(Ge)S4‐xIx] structure was consumed by part of [S3Ga–GaS3] ethane‐like units, which had no contribution to the ion transition framework. The study provided the directions for composition and structure configuration control in effective conductive chalcogenide glasses.

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Section: Introductionmentioning

confidence: 99%

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Zhang

Jiao

et al. 2019

J Am Ceram Soc

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“…Fast Ag-ion-conducting glasses with high RT conductivity of 10 –3 –10 –2 S·cm –1 have been synthesized in a variety of systems of oxides and chalcogenides. − These electrolyte glasses are extensively studied; however, practical problems remain, including poor glass-forming ability and thermodynamic instability against phase separation. , Most of these materials are synthesized by rapid melt-quenching (twin-roller quenching) or mechanical milling techniques and are found to be phase-separated intrinsically or after thermal cycling. The search for fast Ag-ion-conducting glassy electrolytes with good chemical and thermodynamic stability, high homogeneity, and easy synthesis has become the subject of continued investigations. ,,, …”

Section: Introductionmentioning

confidence: 99%

“…Given the relatively high activation energy (normally >0.25 eV), the ionic conductivity of the previously reported Ag-ion glassy electrolytes substantially changes with temperature. − Stable performance under changing temperature environments in a solid-state device is a considerable challenge. Low activation energy in a material is crucial to achieve consistent performance of the device in a broad temperature range, especially below room temperature.…”

Section: Introductionmentioning

confidence: 99%

Fast Ag-Ion-Conducting GeS₂–Sb₂S₃–AgI Glassy Electrolytes with Exceptionally Low Activation Energy

et al. 2018

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Silver-ion-sconducting solid electrolytes with low activation energy are important because of their distinctive application potential in solid-state batteries operated within a broad temperature range, especially below room temperature. Achieving glassy solid electrolytes with high ionic conductivity, low activation energy, and good thermal stability is a continuous challenge for the design and synthesis of novel fast ion-conducting glasses. Here, we report markedly low activation energy and high room-temperature ionic conductivity in melt-quenched GeS2–Sb2S3–AgI chalcogenide glasses. Homogeneous 2.5GeS2–27.5Sb2S3–70AgI glass presenting high glass transition temperature of 135 °C shows high ionic conductivity of 9.18 × 10–3 S/cm at 25 °C and low activation energy of 0.07 eV, which is the lowest among those of Ag-ion glassy electrolytes. Structural characterization by using Raman spectra suggests that, in the disordered network structure of GeS2–Sb2S3–AgI glasses, the formation of chain fragments composed by [SbS3–x I x ] n , which is similar to the double chain of [(SbSI)∞]2 in the SbSI crystal structure, provides possible diffusion pathways to facilitate low-barrier concerted migration of silver ions.

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“…Therefore, the surface modification is a novel route to promote the TiO 2 application. [8,9] As was already mentioned, building an effective photocatalytic system based on TiO 2 heterostructures requires careful semiconductor selection. Silver-containing compounds have demonstrated exceptionally high photocatalytic activity among promising semiconductors.…”

Section: Introductionmentioning

confidence: 99%

“…successfully synthesized homogeneous TiO 2 nanotubes combined with Ag 2 S−Sb 2 S 3 and observed increase efficiency in the photocatalytic removal of Cr(VI) under solar irradiation. Therefore, the surface modification is a novel route to promote the TiO 2 application [8,9] …”

Section: Introductionmentioning

confidence: 99%

Silver Sulfide Anchored Anatase TiO₂ Nanoparticles for Ultrafast Degradation of Selective Textile Dyes

Murugadoss,

Venkatesh,

Rajabathar

et al. 2024

ChemistrySelect

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The surface modification of the TiO2 with selective narrow band gap of metal or metal sulfide is an attractive attention in recent years. Herein, tiny Ag2S nanoparticles are well anchored on the TiO2 surface by a cost‐effective chemical precipitation method for efficient photocatalytic activity. The decoration of Ag2S nanoparticles is clearly identified through electron microscopy studies. The UV‐Vis diffuse reflection spectra (DRS) revealed that TiO2/Ag2S composites absorbed broad spectrum in the visible region. The reduced band‐gap of 2.41 eV by anchored the Ag2S on TiO2 may boosted the photocatalytic activity. Particularly, incorporation of Ag2S nanoparticles increased charge separation efficiency, lowering recombination, and improving photocatalytic performance. Because of their unique structural and optical properties, TiO2/Ag2S composites have increased photocatalytic activity. The photocatalytic performance of the pristine Ag2S and Ag2S anchored TiO2 are Crystal violet (CV) and Methyl orange (MO) dye molecules under same experimental condition. As expected, the TiO2/Ag2S showed highest photocatalytic degradation efficiency than alone TiO2.

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Mechanochemically synthesized Ag2S–Sb2S3 amorphous fast ionic conductors

Cited by 15 publications

References 48 publications

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Fast Ag-Ion-Conducting GeS₂–Sb₂S₃–AgI Glassy Electrolytes with Exceptionally Low Activation Energy

Silver Sulfide Anchored Anatase TiO₂ Nanoparticles for Ultrafast Degradation of Selective Textile Dyes

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Mechanochemically synthesized Ag2S–Sb2S3 amorphous fast ionic conductors

Cited by 15 publications

References 48 publications

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

Fast Ag-Ion-Conducting GeS2–Sb2S3–AgI Glassy Electrolytes with Exceptionally Low Activation Energy

Silver Sulfide Anchored Anatase TiO2 Nanoparticles for Ultrafast Degradation of Selective Textile Dyes

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Product

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About

Fast Ag-Ion-Conducting GeS₂–Sb₂S₃–AgI Glassy Electrolytes with Exceptionally Low Activation Energy

Silver Sulfide Anchored Anatase TiO₂ Nanoparticles for Ultrafast Degradation of Selective Textile Dyes