Large thermoelectric power factor in polyaniline/graphene nanocomposite films prepared by solution-assistant dispersing method
Large thermoelectric power factor in polyaniline/graphene nanocomposite films prepared by solution-assistant dispersing method
复制标题
溶液辅助分散法制备聚苯胺/石墨烯纳米复合薄膜的大热电功率因数
DOI：
10.1039/c4ta01541j
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发表时间：
2014-07
影响因子：
11.9
通讯作者：
Lidong Cheng
中科院分区：
文献类型：
--
作者：
Hui Bi;Fuqiang Huang;Qun Wang;Lidong Cheng
采用溶液辅助分散法制备了含有三种石墨烯的聚苯胺（PANI）/石墨烯热电（TE）纳米复合薄膜。石墨烯纳米片在 PANI 矩阵中沿平行于基底的方向排列。石墨烯中的结构缺陷和氧含量对PANI/石墨烯复合材料的TE性能有很大影响。用具有较低结构缺陷和氧杂质的石墨烯制备的复合薄膜表现出较高的TE性能。复合薄膜的最大电导率和功率因数分别达到856 S cm−1和19 μW m−1K−2，是已报道的聚合物/石墨烯TE复合材料中的最高值。这些出色的TE性能可归因于PANI和低缺陷石墨烯之间强大的π-π共轭相互作用以及溶液过程，该过程扩大了PANI分子构象，从而提高了载流子迁移率和电导率。这项工作为制备具有高TE性能的聚合物/石墨烯复合材料提供了一种简单有效的方法。
Polyaniline (PANI)/graphene thermoelectric (TE) nanocomposite films with three types of graphene have been prepared by a solution-assistant dispersing method. The graphene nanoplates were aligned in the PANI matrix in the direction parallel to the substrate. The structural defects and oxygen content in the graphene had great influence on the TE performance of the PANI/graphene composites. The composite films prepared with graphene with lower structural defects and oxygen impurities showed higher TE properties. The maximum electrical conductivity and power factor of the composite film reached 856 S cm−1 and 19 μW m−1K−2 respectively, which were the highest values among the reported polymer/graphene TE composites. These outstanding TE properties can be ascribed to the strong π–π conjugation interactions between PANI and low-defect graphene as well as to the solution process, which expands the PANI molecular conformation and therefore results in the enhancement of carrier mobility and electrical conductivity. This work provides a simple and effective approach to preparing polymer/graphene composite materials with high TE performance.
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影响因子：
17.1
作者：
Yu, Choongho;Choi, Kyungwho;Grunlan, Jaime C.
通讯作者：
Grunlan, Jaime C.
影响因子：
4.4
作者：
Du, Y.;Cai, K. F.;Casey, P. S.
通讯作者：
Casey, P. S.
影响因子：
4.6
作者：
Xiang, Jinglei;Drzal, Lawrence T.
通讯作者：
Drzal, Lawrence T.
影响因子：
4.6
作者：
Adams, PN;Laughlin, PJ;Kenwright, AM
通讯作者：
Kenwright, AM
影响因子：
11.9
作者：
Abad, Begona;Alda, Irene;Martin-Gonzalez, Marisol
通讯作者：
Martin-Gonzalez, Marisol