Polypyrrole-coated multi-walled carbon nanotubes for the simple preparation of counter electrodes in dye-sensitized solar cells

Gemeiner, Pavol; Kuliček, Jaroslav; Mikula, Milan; Hatala, Michal; Švorc, Ľubomír; Hlavata, Lenka; Mičušík, Matej; Omastová, Mária

doi:10.1016/j.synthmet.2015.10.020

Cited by 44 publications

(14 citation statements)

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“…Specifically, the properties of each polymer contribute to modify the final properties of the composite, for example, polypyrrole, an organic polymer with good catalytic activity for I −3 reduction, high conductivity, and stability in the presence of liquid electrolytes. In their work, Gemeiner et al [90] synthesized polypyrrole-coated-MWCNT structures via a threestep oxidative polymerization to be used as counter electrode in Gratzel devices. Compared to pristine polypyrrole electrodes, the presence of MWCNT improves charge transport, enhancing catalytic activity and consequently the performance of the final device.…”

Section: Carbonmentioning

confidence: 99%

Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

L¹,

pez-Naranjo²,

Gonz

et al. 2016

Journal of Nanomaterials

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Transparent conducting electrodes (TCE) are extensively applied in a great range of optoelectronic and photovoltaic equipment (e.g., solar cells, touch panels, and flexible devices). Carbon-based nanomaterials are considered as suitable replacements to substitute traditional materials to manufacture TCE due to their remarkable characteristics, for example, high optical transmittance and outstanding electrical properties. In comparison with traditional indium tin oxide electrodes, carbon-based electrodes show good mechanical properties, chemical stability, and low cost. Nevertheless, major issues related to the development of good quality manufacture methods to produce carbon-based nanomaterials have to be overcome to meet massive market requirements. Hence, the development of alternative TCE materials as well as appropriate large production techniques that meet the requirements of a proper sheet resistance along with a high optical transparency is a priority. Therefore, in this work, we summarize and discuss novel production and synthesis methods, chemical treatments, and hybrid materials developed to satisfy the worldwide request for carbon-based nanomaterials.

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Section: Carbonmentioning

confidence: 99%

Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

L¹,

pez-Naranjo²,

Gonz

et al. 2016

Journal of Nanomaterials

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“…). In general, FTIR spectra exhibited peaks characteristic of the conducting polymers (PEDOT, PPy and PTTh) in their doped states, as well as additional features derived from the macrodopant (PSS or PeesBro). Assignment of vibrational modes is complicated by overlapping peaks from the CPs and macrodopants in the fingerprint region.…”

Section: Resultsmentioning

confidence: 99%

Dopant macroinitiator for electropolymerisation and functionalisation of conducting polymer thin films

et al. 2017

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Grafting of polymer brushes from conducting polymer (CP) thin films by controlled radical polymerisation provides a versatile route for the synthesis of functional, electroactive surfaces, with applications in diverse fields. However, one of the drawbacks of this approach is the difficulty of upscaling the synthesis due to the need for specialised CP precursor monomers functionalised with initiation sites. We herein describe an alternative approach to the synthesis of CP-based polymer brushes whereby atom transfer radical polymerisation initiation sites are attached to a macrodopant incorporated into CP films during electropolymerisation. The facile electropolymerisation of commonly studied CPs with an initiator-functionalised macrodopant -poly[(styrene sulfonate)-co-(2-bromopropionyloxyethyl methacrylate)] -is demonstrated. The composite polymer films thus synthesised were used as substrates for grafting of hydrophilic polymer brushes. Although poly(styrene sulfonate) is commonly used as a macrodopant in CP films, its initiator-functionalised derivatives have not previously been utilised in this manner. Despite the elegance of this approach, to the authors' knowledge, there have been no previous examples reported of utilising macromolecular dopants as initiators for subsequent grafting of polymer brushes.

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“…A series of characteristic peaks of PPy can be identified for the samples PPy nanotubes and PPy nanoparticles (Figure 5b; Figure S3d, Supporting Information). Specifically, the peak at 1545 cm -1 stands for pyrrole ring vibration, whereas peaks at 1297 and 1031 cm -1 represent the =C-H in-plane vibrations, and the peak at 1165 cm -1 can be assigned as the C-N stretching vibrations [39][40][41]. The intensity of these peaks became much weaker or even hardly identified for 2MoS 2 /PPy composites, which TGA was used to analyze the thermal stability and degradation of these samples (Figure 5c; Figure S3e, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%