Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities  

作　　者：Junjie Zhu Chuan Sun Wanlin Feng Mengran Chen Peng-An Zong Chunlei Wan 

机构地区：[1]College of Materials Science and Engineering,Nanjing Tech University,Nanjing 211800,China [2]Nationai Innovation Institute of Defense Technology,Academy of Military Sciences of the People's Liberation Army of China,Beijing 100089,China [3]Institute of Nuclear Physics and Chemistry,Innovation Research Team for Advanced Ceramics,China Academy of Engineering Physics,Mianyang 621900,China [4]State Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Journal of Advanced Ceramics》2024年第8期1119-1131,共13页先进陶瓷（英文）

基　　金：The authors acknowledge support from NSAF(No.U2230131);the Natural Science Foundation of Jiangsu Province(No.BK20211264);the State Key Laboratory of New Ceramic and Fine Processing,TsinghuaUniversity(No.KF202207);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.SJCX24_0548);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).

摘　　要：Thermoelectric(TE)technologies offer a promising approach for directly converting skin heat into electricity for wearable electronics.Recognizing p-type Sb2Tes and n-type BizTes as top-performing materials at room temperature,their rigid inorganic structure,with ultralow moisture permeability,poses challenges in warm and humid conditions,fostering bacterial growth and potential skin issues.To address this issue,we developed a cross-linked core-shell structure by electrodepositing Sb_(2)Te_(3)(Bi_(2)Te_(3))onto carbon fiber(CF).This architecture significantly improved the electrical conductivity and the Seebeck coefficient,resulting in a remarkable 300-fold increase in the power factor compared to that of pure CF.The CF/Sb_(2)Te_(3) and CF/Bi2Te films demonstrated optimal power factors of 450 and 121μW·m^(-1)·K^(-2),respectively.Moreover,the fabricated films exhibited outstanding moisture permeability,over 3000 g·m^(-2)·d^(-1),exceptional electromagnetic interference shielding efficiency approaching 93 dB,and versatility as sensors for language assistance and respiratory monitoring.These attributes underline their broad applicability,emphasizing their suitability for human health protection in diverse scenarios.

关 键 词：thermoelectric(TE) carbon fiber(CF) Bi_(2)Te_(3) ELECTRODEPOSITION moisture permeability electromagnetic interference shielding 

分 类 号：TB332[一般工业技术—材料科学与工程]