Polyaniline electrochromic devices with transparent graphene electrodes

Zhao, Lu; Zhao, Liang; Xu, Yuxi; Qiu, Tengfei; Zhi, Linjie; Shi, Gaoquan

doi:10.1016/j.electacta.2009.08.063

Cited by 245 publications

(138 citation statements)

References 67 publications

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“…have been considered as EC materials but among these, PANI has emerged as the most promising active materials for electrochromic devices due to its high capacitive characteristics, relative ease in preparation, good environmental stability and tuneable conductivity [10]. PANI has been shown to give four distinct colors corresponding to four redox states which are: yellow (leucoemeraldine base), green (emeraldine salt), blue (emeraldine base) and purple (pernigraniline base) [11]. One drawback of polyaniline film is that it shows low conductivity where it can affect its electrochromic behavior [12].…”

Section: Introductionmentioning

confidence: 99%

Electrochromic and electrochemical capacitive properties of tungsten oxide and its polyaniline nanocomposite films obtained by chemical bath deposition method

Nwanya

Jafta

Ejikeme

et al. 2014

Electrochimica Acta

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Polyanine and its nanocomposite WO 3 /PANI films were deposited on Fluorine doped tin oxide (FTO) glass slides by simple Chemical Bath Deposition Method. The morphology and crystalline structure of the composite film was studied using Atomic force (AFM) and Scanning Electron Microscopy, while the electrochemical capacitive properties were determined using Cyclic Voltammetry (CV), chronopotentiometry (CP) and electrochemical impedance spectroscopy (EIS). The WO 3 / PANI nano-composite exhibited multiple colors (electrochromism) during the CV scans, from brownish green to transparent to light green then back to brownish green. Surprisingly, the integration of the PANI with the WO 3 led to synergistic performance of nanohybrid wherein a true electrochemical double layer capacitor was obtained. Also, interestingly and unlike literature reports, the CBD method led to excellent capacitance retention (> 98%) of the PANI even at 1000 continuous cycles. This work demonstrates that simple CBD can be used to get WO 3 / PANI films that give good electrochromism and pseudocapacitance comparable to the ones obtained by other methods. Hence the obtained nanocomposite film of WO 3 / PANI can be a promising material for electrochromic and energy storage applications.

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Section: Introductionmentioning

confidence: 99%

Electrochromic and electrochemical capacitive properties of tungsten oxide and its polyaniline nanocomposite films obtained by chemical bath deposition method

Nwanya

Jafta

Ejikeme

et al. 2014

Electrochimica Acta

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“…Due to its special physical and chemical properties, graphene has shown promise for several advanced technological applications, such as graphene-based composites, chemical detectors, fuel cells, and many others [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and application of Ag-chemically converted graphene nanocomposite

et al. 2010

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An in situ chemical synthesis approach has been employed to prepare an Ag-chemically converted graphene (CCG) nanocomposite. The reduction of graphene oxide sheets was accompanied by generation of Ag nanoparticles. The structure and composition of the nanocomposites were confirmed by means of transmission electron microscopy (TEM), atomic force microscopy (AFM) and X-ray diffraction. TEM and AFM results suggest a homogeneous distribution of Ag nanoparticles (5-10 nm in size) on CCG sheets. The intensities of the Raman signals of CCG in such nanocomposites are greatly increased by the attached silver nanoparticles, i.e., there is surface-enhanced Raman scattering activity. In addition, it was found that the antibacterial activity of free Ag nanoparticles is retained in the nanocomposites, which suggests they can be used as graphene-based biomaterials.

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“…Potential applications in drug delivery are envisaged. On the other hand, nanocomposites of r-GO with intrinsically conductive polymers have been reported (Zhao et al 2009). A thin film of GO was deposited on indium tin oxide (ITO) electrodes, thermally reduced and covered with a layer of polyaniline (PANI).…”

Section: Graphite Oxide (Go) and Reduced Graphite Oxide (R-go)mentioning

confidence: 99%