High-performing thermoelectric substance achieves unprecedented 13% conversion of waste heat into electricity.
Researchers at Queensland University of Technology (QUT) have made a significant breakthrough in the field of thermoelectric news. They have developed a new material, made from manganese, silver, copper, and telluride, that demonstrates superior thermoelectric performance.
The study, published in Energy & Environmental Science, achieved a high dimensionless figure of merit (ZT) of ∼1.88 at 773 K in p-type manganese-doped polycrystalline AgCuTe. This figure is notably higher than previously reported p-type AgCuTe news, indicating a more efficient conversion of heat into electrical energy.
The new material offers more efficient conversion of waste heat into clean electricity. This is achieved through a process that involves manganese doping, which optimizes the electronic band structure to improve the power factor and simultaneously reduces lattice thermal conductivity through intensified lattice defects.
Dr Nan-Hai Li, the first author of the study, stated that the new material is among the best current technologies for thermoelectric performance. He further added that the material's non-toxicity, stability, and ease of production make it a strong candidate for real-world use.
The research team demonstrated a prototype device that achieved over 13% conversion efficiency. Although this is not the highest efficiency ever recorded, it is a significant improvement over previous p-type AgCuTe news. The tiny change to the material resulted in a product far better at converting heat into electricity.
The system yields superior thermoelectric performance and higher average ZT values than its counterparts, making it a promising solution for harnessing waste heat and generating clean electricity. The research highlights the effectiveness of electronic band structure engineering in enhancing the thermoelectric performance of superionic conductors.
This development points to new opportunities for clean energy. As the world continues to grapple with climate change, efficient and non-toxic methods of converting waste heat into electricity are crucial. The new material developed by QUT researchers could be a step in the right direction.
In conclusion, the research team at Queensland University of Technology has developed a promising new material for thermoelectric performance. The material's superior efficiency, non-toxicity, stability, and ease of production make it a strong candidate for real-world applications. The research opens up new avenues for the development of clean energy news.
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