Lin, Po-ShenPo-ShenLinLi, MengMengLiChen, Yong-QiYong-QiChenHu, Bo-XuanBo-XuanHuCHENG-LIANG LIUChen, Zhi-GangZhi-GangChen2026-03-162026-03-162026-02-1513858947https://www.scopus.com/record/display.uri?eid=2-s2.0-105029231177&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/736372Thermoelectric materials are traditionally employed in power generation and solid-state refrigeration. However, progress in thermoelectric generators and coolers has slowed in recent years due to high material costs and limited efficiency, prompting exploration into new application area. In this study, we fabricate a composite thermoelectric foam (CTF) by integrating Ag2Se nanowires, single-walled carbon nanotubes (SWCNTs), and polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SEBS). The resulting porous structure, combined with the elasticity of SEBS, endows the CTF with ultralight weight (0.33 g cm−3), low thermal conductivity (0.38 W m−1 K−1), and excellent mechanical resilience, enabling it to withstand 20% tensile strain and fully recover from 60% compressive deformation. Incorporating conductive SWCNTs yields a 6.4-fold increase in thermoelectric figure-of-merit compared to pristine Ag2Se foam. Due to the unique structure and improved thermoelectric performance, the Ag2Se/SWCNT/SEBS CTF can function effectively as a temperature–pressure dual sensor, with experimentally verified sensitivity to both ambient temperature change and mechanical strain. Our work provides a facile and scalable approach to producing CTFs with controllable thermoelectric and mechanical properties, offering strong potential for sensing applications.trueAg2Se nanowireCarbon nanotubeDual-sensorNanocompositeThermoelectric foamjournal article10.1016/j.cej.2026.1736462-s2.0-105029231177