Direct thermal-to-electric energy conversion material of environmentally-benign Mg_2Si synthesized using wasted Si sludge

点击翻译按钮获取中文摘要

Thermoelectric power generation is expected to be one of the effective technologies that will help reduce global warming by directly converting energy from waste heat or solar heat to electricity. Magnesium-Silicide(Mg_2Si) has the potential to be an effective thermoelectric material with operating temperatures ranging from 500 K to 900 K. Here we have tried to introduce reusing of industrial waste of Si sludge as a source material for Mg_2Si, because the current product inversion rate of Si for semiconductor LSI devices remains at 25 to 30%, while most of the remainder is disposed of as a waste ; this is mainly discharged as sludge from grinding and polishing processes.