인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Thermoelectric‐based waste heat recovery requires efficient materials to replace conventional non‐eco‐friendly Te‐ and Pb‐based commercial devices. Ternary copper chalcogenide‐based famatinite (Cu 3 SbS 4 ) compound is one of the practical substitutes for traditional thermoelectric materials. However, the pristine Cu 3 SbS 4 inherits poor structural complexion, large thermal conductivity, and low power conversion efficiency. To develop high‐efficiency Cu 3 SbS 4 , InSb nanoinclusions are incorporated via high‐energy ball milling followed by the hot‐press densification method. Incorporating InSb nanoinclusions to lower thermal conductivity via phonon scattering while increasing the thermopower via a carrier energy filtering process. The thermoelectric performance (ZT) of ≈0.4 at 623 K is obtained in Cu 3 SbS 4 ‐3 mol% InSb nanocomposite, which is ≈140% higher than pure Cu 3 SbS 4 . Both mechanical and thermal stability are improved by grain boundary hardening and dispersion strengthening. Thus, a facile nanostructured Cu 3 SbS 4 with added InSb nanoinclusions is delivered as a highly efficient, eco‐friendly, structurally‐, thermally‐, and mechanically‐stable material for next‐generation thermoelectric generators.
#Materials science
#Thermoelectric effect
#Thermoelectric materials
#Ternary operation
#Thermal conductivity
#Chalcogenide
#Thermal stability
#Nanocomposite
#Phonon scattering
#Phonon
#Grain boundary
#Optoelectronics
#Composite material
#Chemical engineering
#Microstructure
#Condensed matter physics
#Thermodynamics
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