Abstract
Novel glasses in a Ga2S3-Sb2S3-AgI system were prepared with a melt-quenching method, and their glass-forming region was identified. The maximum dissolvable AgI in glasses was 65 mol%. The thermal, optical, and structural properties of glasses were investigated as a function of AgI and Ga2S3 contents. The Ga2S3-Sb2S3-AgI glasses possess a wide region of transmission window (0.65−14 μm). An ionic conductivity of approximately 1.01 × 10−3 S/cm can be obtained for a 40 (0.8Sb2S3-0.2Ga2S3)-60AgI glass at an ambient temperature, and the ionic conductivity increased as temperature increased. The relative activation energy of Ag+ conduction was also calculated. These novel glasses show potential for the combined application of infrared optics and solid electrolytes.
Highlights
The development of large-scale energy systems has been widely explored because of the rapidly increasing demand for portable electronic devices, electric vehicles, and systems based on renewable energy
To improve the glass-forming ability and to find new optic materials and chalcogenide solid electrolytes with high Ag+ ionic conductivity, we investigated a series of Ga2S3-Sb2S3 glasses, which exhibit good glass-forming ability and properties[17,18]
The high Ag+ conductivity of 1.01 × 10−3 S/cm at room temperature can be obtained for the 40 (0.8Sb2S3-0.2Ga2S3)-60AgI sample. This result indicates that this glass system shows potential for amorphous solid electrolyte applications
Summary
A previous research on similar chalcogenide glass systems[20,21] indicated that the introduction of AgI to Ga2S3-Sb2S3 can improve glass-forming ability and ionic conductivity because of the formation of [GaS4−xIx] structure units and a large amount of Ag+, respectively. The new band at 106 cm−1 is attributed to γ-AgI at room temperature as the AgI concentration increases[31] These structures may provide a basis for the understanding of the electrical conductivity of existing glasses. The high Ag+ conductivity of 1.01 × 10−3 S/cm at room temperature can be obtained for the 40 (0.8Sb2S3-0.2Ga2S3)-60AgI sample This result indicates that this glass system shows potential for amorphous solid electrolyte applications
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