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Zr-MOF/Polyaniline Composite Films with Exceptional Seebeck Coefficient for Thermoelectric Material Applications

Chih‐Chien LinDepartment of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, TaiwanYi‐Chia HuangDepartment of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, TaiwanMuhammad UsmanInstitute of Chemistry, Academia Sinica, Taipei 115, TaiwanWen-Hsuan ChaoMaterial and Chemical Research Laboratory, Industrial Technology Research Institute, Hsinchu 310, TaiwanWei-Keng LinDepartment of Engineering and System Science, National Tsing Hua University, Hsinchu 300, TaiwanTzuoo-Tsair LuoInstitute of Chemistry, Academia Sinica, Taipei 115, TaiwanWha-Tzong WhangDepartment of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, TaiwanChun‐Hua ChenDepartment of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, TaiwanKuang‐Lieh LuInstitute of Chemistry, Academia Sinica, Taipei 115, Taiwan

2018en

ABI

Annotatsiya

Controlling the polymerization of aniline in the presence of zirconium-based metal–organic frameworks (Zr-MOFs) using polystyrene sulfonic acid as a dopant resulted in the formation of a new type of free-standing thermoelectric composite film. Polyaniline chains interpenetrate into the Zr-MOFs to enhance the crystallinity of polyaniline, resulting in an improved degree of electrical conductivity. In addition, the inherent porosity of the Zr-MOFs functions to suppress the increase in thermal conductivity, thus dramatically promoting a negative Seebeck coefficient. When 20 wt % Zr-MOF was used, a power factor of up to 664 μW/(m K2) was obtained, which was accompanied by a surprisingly large, negative Seebeck coefficient. The new class of MOF-based composites offers a new direction for developing new types of efficient thermoelectric materials.

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Identifikatorlar

DOI: 10.1021/acsami.8b17308

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