Boosting the Power Factor and Thermoelectric Performance in Eco-Friendly Cu3SbS4 by Twin Boundary and Grain Boundary Phase

Jian Yang,Mingyuan Wang,Baobiao Lu,Haigang Hou,Xiangzhao Zhang,Ziwei Xu,Junlin Liu,Guiwu Liu,Guanjun Qiao

CHEMICAL ENGINEERING JOURNAL（2023）

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摘要

•Dense twin boundaries and grain boundary phases.•A very high power factor of ∼ 14.4 μW cm−1 K−2 and an average power factor of ∼ 12 μW cm−1 K−2 at 300–623 K.•A record ZT of ∼ 0.78 at 623 K in the Cu3SbS4-based systems.•A significant increase in the fracture toughness.

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关键词

Cu3SbS4,Twin boundaries,Grain boundary phases,Thermoelectric performance,Fracture toughness

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