Transferable,highly crystalline covellite membrane for multifunctional thermoelectric systems  

作　　者：Myungwoo Choi Geonhee Lee Yea-Lee Lee Hyejeong Lee Jin-Hoon Yang Hanhwi Jang Hyeonseok Han MinSoung Kang Seonggwang Yoo A-Rang Jang Yong Suk Oh Inkyu Park Min-Wook Oh Hosun Shin Seokwoo Jeon Jeong-O Lee Donghwi Cho 

机构地区：[1]Department of Materials Science and Engineering,Korea University,Seoul,Republic of Korea [2]Thin Film Materials Research Center,Korea Research Institute of Chemical Technology,Daejeon,Republic of Korea [3]Chemical Data-Driven Research Center,Korea Research Institute of Chemical Technology,Daejeon,Republic of Korea [4]Division of Chemical and Material Metrology,Korea Research Institute of Standards and Science,Daejeon,Republic of Korea [5]Department of Materials Science and Engineering,Korea Advanced Institute of Science and Technology,Daejeon,Republic of Korea [6]Department of Mechanical Engineering,Korea Advanced Institute of Science and Technology,Daejeon,Republic of Korea [7]Therapeutics&Biotechnology Division,Drug Discovery Platform Research Center,Korea Research Institute of Chemical Technology,Daejeon,Republic of Korea [8]Querry Simpson Institute for Bioelectronics,Northwestern University,Evanston,Illinois,USA [9]Division of Electrical,Electronic and Control Engineering,Kongju National University,Cheonan,Republic of Korea [10]Department of Mechanical Engineering,Changwon National University,Changwon,Republic of Korea [11]Department of Materials Science and Engineering,Hanbat National University,Daejeon,Republic of Korea [12]Advanced Materials and Chemical Engineering,University of Science and Technology,Daejeon,Republic of Korea

出　　处：《InfoMat》2024年第11期66-80,共15页信息材料（英文）

基　　金：supported by the Korea Research Institute of Chemical Technology(KRICT)of the Republic of Korea(KS2321-10,BSK23-440,KK2351-10);supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(Ministry of Science and ICT)(RS-2024-00421857);supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP)grant funded by the Ministry of Trade,Industry and Energy(MOTIE)(2021202080023D).

摘　　要：Emerging freestanding membrane technologies,especially using inorganic thermoelectric materials,demonstrate the potential for advanced thermoelectric platforms.However,using rare and toxic elements during material processing must be circumvented.Herein,we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications.By sulfurizing crystalline Cu,we produce a highly percolated and easily transferable network of submicron CuS rods.The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m^(-1) K^(-2) and thermal conductivity of 0.37 W m^(-1) K^(-1) at 650 K(estimated value).This yields a record-high dimensionless figure-of-merit of 0.91 at 650 K(estimated value)for covellite.Moreover,integrating 12 CuS devices into a module resulted in a power generation of4μW atΔT of 40 K despite using a straightforward configuration with only p-type CuS.Furthermore,based on the temperature-dependent electrical characteristics of CuS,we develop a wearable temperature sensor with antibacterial properties.

关 键 词：copper sulfide flexible thermoelectric generator multifunctional thermoelectric systems SULFURIZATION thermoelectric membrane 

分 类 号：TB34[一般工业技术—材料科学与工程]