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In situ growth of PEDOT/graphene oxide nanostructures with enhanced electrochromic performance

机译：PEDOT /氧化石墨烯纳米结构的原位生长具有增强的电致变色性能

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摘要

Poly(3,4-ethylenedioxythiophene) (PEDOT)/graphene oxide (GO) hybrid nanostructures have been obtained by an in situ electro-polymerization process. Field emission scanning electron microscope observation indicates that the hybrid nanostructures consist of uniform and well-dispersed PEDOT nanoparticles integrated on the networked GO nanosheets. Surface chemistry and structure of the hybrid nanostructures have been characterized by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Electrochemical and optical property measurements demonstrate that the hybrid nanostructures exhibit significantly improved electrochromic performance compared with the pristine PEDOT nanostructure. The contrast between coloring and bleaching state of the PEDOT nanostructure at 480 nm increases from 23.4% to 31.4% after hybridizing with GO nanosheets. The coloring time and bleaching time are shortened from 1800 ms to 300 ms and 1500 ms to 400 ms, respectively, while the coloring efficiency increases from 53.5 cm ~(2) C ~(?1) to 64.9 cm ~(2) C ~(?1) after the hybridization. The obtained PEDOT/GO hybrid nanostructures promise great potential in developing novel electrochromic materials for smart windows and other energy saving applications.
机译：聚（3,4-乙撑二氧噻吩）（PEDOT）/氧化石墨烯（GO）杂化纳米结构已通过原位电聚合工艺获得。场发射扫描电子显微镜观察表明，杂化纳米结构由均匀且分散良好的PEDOT纳米颗粒组成，这些纳米颗粒集成在网络化的GO纳米片上。混合纳米结构的表面化学和结构已通过X射线光电子能谱（XPS）和拉曼光谱进行了表征。电化学和光学性质测量表明，与原始的PEDOT纳米结构相比，杂化纳米结构表现出显着改善的电致变色性能。与GO纳米片杂交后，PEDOT纳米结构在480 nm的着色和漂白状态之间的对比度从23.4％增加到31.4％。着色时间和漂白时间分别从1800 ms缩短至300 ms和1500 ms缩短至400 ms，而着色效率从53.5 cm〜（2）C〜（？1）增至64.9 cm〜（2）C〜 （？1）杂交后。获得的PEDOT / GO混合纳米结构有望为开发用于智能窗户和其他节能应用的新型电致变色材料提供巨大潜力。

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