当前位置: X-MOL 学术Polymer › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synergistic conductivity increase in polypyrrole/molybdenum disulfide composite
Polymer ( IF 4.6 ) Pub Date : 2018-07-03 , DOI: 10.1016/j.polymer.2018.07.004
Udit Acharya , Patrycja Bober , Miroslava Trchová , Alexander Zhigunov , Jaroslav Stejskal , Jiří Pfleger

Polypyrrole/molybdenum disulfide (PPy/MoS2) composites were synthesized by in-situ chemical polymerization of pyrrole in the presence of MoS2 flakes. The conductivity of the composite with a moderate content of PPy (15–30 wt%) reached 13 S cm−1, which is markedly higher than the conductivity of both the pristine PPy and MoS2, 1 and 10−6 S cm−1, respectively. The improved conductivity was explained by the formation of ordered thin PPy films with high conductivity at the MoS2 surface. At higher pyrrole content, globular PPy was formed in the bulk of the composite resulting in an increase of a disordered polymer fraction, and the conductivity decreased. The composite conductivity is thus controlled not only by content of PPy but also by the proportions between ordered and disordered PPy phases. The structural and morphological characterization of composite materials is based on Fourier-transform infrared and Raman spectroscopies, wide-angle X-ray diffraction, and scanning and transmission electron microscopies. The charge-carrier transport in the composites fits the Mott variable-range hopping mechanism.



中文翻译:

聚吡咯/二硫化钼复合材料的协同电导率提高

聚吡咯/二硫化钼(PPy / MoS 2)复合材料是通过MoS 2薄片存在下吡咯的原位化学聚合而合成的。该复合材料的了PPy(15-30重量%)的中等含量的导电率达到13号第厘米-1,这是显着高于两个原始的导电性聚吡咯和MoS 2, 1和10 -6 小号厘米-1, 分别。通过在MoS 2处形成具有高电导率的有序PPy薄膜可以解释电导率的提高表面。在较高的吡咯含量下,在复合材料的主体中形成球状PPy,导致无序聚合物分数增加,电导率降低。因此,不仅通过PPy的含量而且通过有序和无序PPy相之间的比例来控制复合电导率。复合材料的结构和形态表征基于傅立叶变换红外和拉曼光谱,广角X射线衍射以及扫描和透射电子显微镜。复合材料中的载流子传输符合Mott可变范围跳变机制。

更新日期:2018-07-03
down
wechat
bug