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Chemically Exfoliated SnSe Nanosheets and Their SnSe/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Composite Films for Polymer Based Thermoelectric Applications
ACS Nano ( IF 15.8 ) Pub Date : 2016-05-23 00:00:00 , DOI: 10.1021/acsnano.5b07355 Hyun Ju 1 , Jooheon Kim 1
ACS Nano ( IF 15.8 ) Pub Date : 2016-05-23 00:00:00 , DOI: 10.1021/acsnano.5b07355 Hyun Ju 1 , Jooheon Kim 1
Affiliation
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Tin selenide (SnSe) nanosheets (NSs) are prepared by hydrothermal lithium-intercalation and a subsequent exfoliation process from a SnSe ingot. Conducting polymer poly(3,4-ethylenedioxythiohene):poly(styrenesulfonate) (PEDOT:PSS)-based thermoelectric composites are fabricated with varying SnSe NSs content, and the thermoelectric properties of the composites are examined at 300 K. The exfoliated SnSe particles show thin two-dimensional sheet-like structures that are evenly distributed into the PEDOT:PSS matrix. The significantly enhanced power factor (S2·σ) of the SnSe NS/PEDOT:PSS composites with increasing SnSe NSs content can be explained by the potential difference at the interface between the SnSe and PEDOT:PSS. The fabricated SnSe NS/PEDOT:PSS composites show a maximum figure of merit (ZT) of 0.32 at a SnSe NSs loading of 20 wt %. The mixing of inorganic nanoparticles with the conducting polymer matrix forms products with extremely low thermal conductivities, which is a promising strategy for the realization of polymer based efficient thermoelectric applications.
中文翻译：
用于聚合物基热电应用的化学剥离SnSe纳米片及其SnSe / Poly（3,4-ethylenedioxythiophene）：Poly（苯乙烯磺酸盐）复合薄膜
硒化锡（SnSe）纳米片（NSs）是通过水热锂嵌入和随后的SnSe铸锭剥离工艺制备的。制备了具有变化的SnSe NSs含量的导电聚合物聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）基热电复合材料，并在300 K下检查了复合材料的热电性能。剥落的SnSe颗粒显示薄的二维片状结构，均匀分布在PEDOT：PSS矩阵中。功率因数显着提高（S 2SnSe NS / PEDOT：PSS复合材料中SnSe NSs含量增加的·σ）可以用SnSe和PEDOT：PSS之间的界面处的电势差来解释。所制备的SnSe NS / PEDOT：PSS复合材料在20％的SnSe NSs负载下显示出的最大品质因数（ZT）为0.32。无机纳米颗粒与导电聚合物基质的混合形成的产品具有极低的热导率，这对于实现基于聚合物的高效热电应用是一种有前途的策略。
更新日期：2016-05-23
中文翻译：
用于聚合物基热电应用的化学剥离SnSe纳米片及其SnSe / Poly（3,4-ethylenedioxythiophene）：Poly（苯乙烯磺酸盐）复合薄膜
硒化锡（SnSe）纳米片（NSs）是通过水热锂嵌入和随后的SnSe铸锭剥离工艺制备的。制备了具有变化的SnSe NSs含量的导电聚合物聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）基热电复合材料，并在300 K下检查了复合材料的热电性能。剥落的SnSe颗粒显示薄的二维片状结构，均匀分布在PEDOT：PSS矩阵中。功率因数显着提高（S 2SnSe NS / PEDOT：PSS复合材料中SnSe NSs含量增加的·σ）可以用SnSe和PEDOT：PSS之间的界面处的电势差来解释。所制备的SnSe NS / PEDOT：PSS复合材料在20％的SnSe NSs负载下显示出的最大品质因数（ZT）为0.32。无机纳米颗粒与导电聚合物基质的混合形成的产品具有极低的热导率，这对于实现基于聚合物的高效热电应用是一种有前途的策略。
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