Atmospheric-Pressure Plasma Jet Processed Pt-Decorated Reduced Graphene Oxides for Counter-Electrodes of Dye-Sensitized Solar Cells

Wan, Ting-Hao; Chiu, Yi-Fan; Chen, Chieh-Wen; Hsu, Cheng–Che; Cheng, I-Chun; Chen, Jian-Zhang

doi:10.3390/coatings6040044

Cited by 25 publications

(22 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduced graphene oxide has become an important material in an umber of emerging applications, for instance in smart flexible strain sensors, [17] detectors of H 2 O 2 in urine, indicating the presence of cancerc ells, [18] as ac ounter electrode in DSSC, [19][20][21] as ah eat-spreading layeri np erovskites olar cells, [22] and as ab arrierl ayer for organic electronics, [23] among many others. rGO can be produced by variousp rocesses, but they currently require high-temperatures or are prohibitively timeconsuming.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

et al. 2018

View full text Add to dashboard Cite

This study concerns a low-temperature method for dry hydrogen plasma reduction of inkjet-printed flexible graphene oxide (GO) electrodes, an approach compatible with processes envisaged for the manufacture of flexible electronics. The processing of GO to reduced graphene oxide (rGO) was performed in 1-64 s, and sp /sp +sp carbon concentration increased from approximately 20 % to 90 %. Since the plasma reduction was associated with an etching effect, the optimal reduction time occurred between 8 and 16 s. The surface showed good mechanical stability when deposited on polyethylene terephthalate flexible foils and significantly lower sheet resistance after plasma reduction. This method for dry plasma reduction could be important for large-area hydrogenation and reduction of GO flexible surfaces, with present and potential applications in a wide variety of emerging technologies.

show abstract

Section: Introductionmentioning

confidence: 99%

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

et al. 2018

View full text Add to dashboard Cite

show abstract

“…On the other hand, graphene and its derivatives have attracted recent attention as novel nanomaterials in a large variety of fields, including biomedical applications, because of their unique physicochemical, thermomechanical, and biological properties [39][40][41][42]. In particular, increasing attention has been paid for the effects of reduced graphene oxide (rGO) on cellular behaviors.…”

Section: −mentioning

confidence: 99%

Dicalcium Phosphate Coated with Graphene Synergistically Increases Osteogenic Differentiation In Vitro

et al. 2017

View full text Add to dashboard Cite

Abstract:In recent years, graphene and its derivatives have attracted much interest in various fields, including biomedical applications. In particular, increasing attention has been paid to the effects of reduced graphene oxide (rGO) on cellular behaviors. On the other hand, dicalcium phosphate (DCP) has been widely used in dental and pharmaceutical fields. In this study, DCP composites coated with rGO (DCP-rGO composites) were prepared at various concentration ratios (DCP to rGO concentration ratios of 5:2.5, 5:5, and 5:10 µg/mL, respectively), and their physicochemical properties were characterized. In addition, the effects of DCP-rGO hybrid composites on MC3T3-E1 preosteoblasts were investigated. It was found that the DCP-rGO composites had an irregular granule-like structure with a diameter in the range order of the micrometer, and were found to be partially covered and interconnected with a network of rGO. The zeta potential analysis showed that although both DCP microparticles and rGO sheets had negative surface charge, the DCP-rGO composites could be successfully formed by the unique structural properties of rGO. In addition, it was demonstrated that the DCP-rGO composites significantly increased alkaline phosphatase activity and extracellular calcium deposition, indicating that the DCP-rGO hybrid composites can accelerate the osteogenic differentiation by the synergistic effects of rGO and DCP. Therefore, in conclusion, it is suggested that the DCP-rGO hybrid composites can be potent factors in accelerating the bone tissue regeneration.

show abstract

“…In such APPs, the synergetic effects of reactive species and heat trigger high plasma-chemical reactivity, thus affording ultrafast materials processing capability [12][13][14][15][16][17][18][19][20]. For example, a DC-pulse nitrogen APPJ shows high reactivity with carbonaceous materials and the processing times for carbon nanotubes (CNTs) and reduced graphene oxides (rGOs) are within 30 s [12,15,[18][19][20][21][22]. Carbon-based materials react violently with the reactive species of nitrogen plasma at the APPJ self-sustained temperature, as evidenced by optical emission spectroscopy (OES) observations of CN-emission systems.…”

Section: Introductionmentioning

confidence: 99%

Scan-Mode Atmospheric-Pressure Plasma Jet Processed Reduced Graphene Oxides for Quasi-Solid-State Gel-Electrolyte Supercapacitors

et al. 2018

Self Cite

View full text Add to dashboard Cite

A scanning atmospheric-pressure plasma jet (APPJ) is essential for high-throughput large-area and roll-to-roll processes. In this study, we evaluate scan-mode APPJ for processing reduced graphene oxides (rGOs) that are used as the electrodes of quasi-solid-state gel-electrolyte supercapacitors. rGO nanoflakes are mixed with ethyl cellulose (EC) and terpineol to form pastes for screen-printing. After screen-printing the pastes on carbon cloth, a DC-pulse nitrogen APPJ is used to process the pastes in the scan mode. The maximal temperature attained is~550 • C with a thermal influence duration of 10 s per scan. The pastes are scanned by APPJ for 0, 1, 3 and 5 times. X-ray photoelectron spectroscopy (XPS) indicates the reduction of CO binding content as the number of scan increases, suggesting the oxidation/decomposition of EC. The areal capacitance increases and then decreases as the number of scan increases; the best achieved areal capacitance is 15.93 mF/cm 2 with one APPJ scan, in comparison to 4.38 mF/cm 2 without APPJ processing. The capacitance retention rate of the supercapacitor with the best performance is~93% after a 1000-cycle cyclic voltammetry (CV) test. The optimal number of APPJ scans should enable the proper removal of inactive EC and improved wettability while minimizing the damage caused to rGOs by nitrogen APPJ processing.

show abstract

Atmospheric-Pressure Plasma Jet Processed Pt-Decorated Reduced Graphene Oxides for Counter-Electrodes of Dye-Sensitized Solar Cells

Cited by 25 publications

References 24 publications

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

Dicalcium Phosphate Coated with Graphene Synergistically Increases Osteogenic Differentiation In Vitro

Scan-Mode Atmospheric-Pressure Plasma Jet Processed Reduced Graphene Oxides for Quasi-Solid-State Gel-Electrolyte Supercapacitors

Contact Info

Product

Resources

About