High thermoelectric performance bismuth telluride prepared by cold pressing and annealing facilitating large scale application

Bi2Te3-based alloys, generally prepared by traditional zone melting or hot-pressing, have been used in commercial applications for decades. However, the zone melting method is time-consuming and usually accompanied by poor thermoelectric performance, while the hot-pressing sintering needs complex and high-cost equipment. In this work, high-performance p-type Bi0.4Sb1.6Te3 alloy is prepared by cold pressing the ball milled Bi0.4Sb1.6Te3 powder...