Silver chalcogenides have attracted considerable attention as promising materials for wearable power generation because they combine mechanical ductility with favorable thermoelectric properties. However, most reported synthesis methods rely on high-temperature melting and annealing, which offer limited microstructural control and therefore restrict opportunities for further performance improvement. In this study, Ag2S0.4Te0.6 compounds were synthesized through a powder-metallurgical route that combined mechanical alloying with rapid densification by spark plasma sintering. Ball milling produced amorphized microscale powders, which were successfully consolidated at different sintering temperatures. The sample sintered at 600 °C exhibited the highest power factor, mainly because of its optimized electrical transport properties, and achieved zT values of approximately 0.32 near room temperature and approximately 0.50 at 473 K. These results indicate that powder-metallurgical processing is a viable strategy for tailoring transport properties and improving the thermoelectric performance of silver chalcogenide materials for wearable applications.

1. Introduction 
2. Experimental Section 
    2.1 Synthesis 
    2.2 Measurement 
3. Results and Discussion 
4. Conclusion 
Funding
Conflict of Interest 
Data Availability Statement 
Author Information and Contribution 
Acknowledgments
References

• Seungki Jo(Nano Materials Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea) Corresponding author
• Yoojeong Ji(Nano Materials Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea)
• Linh Ba Vu(Nano Materials Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea)
• Kyung Tae Kim(Nano Materials Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea)