Development of MoSe2/PANI composite nanofibers as an alternative to Pt counter electrode to boost the photoconversion efficiency of dye sensitized solar cell

Sowbakkiyavathi, Elindjeane Sheela; Murugadoss, Vignesh; Sittaramane, Ramadasse; Angaiah, Subramania

doi:10.1007/s10008-020-04728-6

Cited by 30 publications

(4 citation statements)

References 52 publications

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“…The cathodic peak correlates to the negative direction and the analogous anodic peak correlates to the positive direction because of the increase in scan rate which represents that the interface between the counter electrode and the electrolyte is a diffusion limitation process. The diffusion coefficient (D n , cm 2 s -1 ) of I 3 − is measured with the cathodic peak current density of the cyclic voltammogram curves by the following Randles-Sevcik equation [42] ;…”

Section: Resultsmentioning

confidence: 99%

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Rajavedhanayagam¹,

Murugadoss²,

Maurya³

et al. 2022

ES Energy Environ.

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In the present work, we prepared quaternary chalcogenide (Cu2NiSnS4) nanoparticles and electrochemically exfoliated graphene (EEG) nanosheets to use as a nanohybrid counter electrode for Dye-sensitized solar cells (DSSC). The structural analysis revealed that the crystallite size of Cu2NiSnS4 in its nanohybrid is smaller than the pristine Cu2NiSnS4 nanoparticles. Further, it is observed from the morphological studies that the Cu2NiSnS4 nanoparticles are decorated uniformly over the wrinkled graphene nanosheets. The electrochemical behavior of these materials is analyzed by AC impedance spectroscopy, cyclic voltammetry (CV) and Tafel polarization studies demonstrating the positive synergetic effect of graphene and Cu2NiSnS4in Cu2NiSnS4/Graphene nanohybrid. Due to the exceptional electrontransfer pathway of graphene and the excellent catalytic ability of Cu2NiSnS4 nanoparticles, the prepared nanohybrid exhibits excellent electrocatalytic activity towards tri-iodide reduction than the pristine Cu2NiSnS4nanoparticles and graphene nanosheets. The DSSC fabricated using Cu2NiSnS4/graphene nanohybrid counter electrode shows a higher photoconversion efficiency (PCE) of 7.92% than that fabricated using std. Pt (7.68%) and the prepared pristine Cu2NiSnS4CE (7.20%).

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Section: Resultsmentioning

confidence: 99%

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Rajavedhanayagam¹,

Murugadoss²,

Maurya³

et al. 2022

ES Energy Environ.

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“…), have extensively drawn potential attention due to their excellent electrocatalytic performance. − Therefore, the remarkable electrocatalytic properties of TMDs have inspired great research interest in their applicability in optoelectronics, catalysis, and semiconductors. Among these 2D layered materials, MoSe 2 is a renowned electrocatalyst because of its low cost, high chemical stability, and excellent electrocatalytic activity, which has been considerably studied over the past few decades. − Consequently, the MoSe 2 /GNR hybrid, which was composed of MoSe 2 nanosheets grown on GNRs, has also been prepared. The obtained MoSe 2 /GNR electrocatalyst not only contains GNR sheets with rich active sites of MoSe 2 -based electrocatalysts on their inert basal planes but also comprises MoSe 2 with reduced charge transfer resistance attributed to the rapid electron transfer from the highly conductive GNRs to the active edge sites of each single layer of MoSe 2 nanosheets directly.…”

Section: Introductionmentioning

confidence: 99%

Well-Dispersive Polypyrrole and MoSe₂ Embedded in Multiwalled Carbon Nanotube@Reduced Graphene Oxide Nanoribbon Electrocatalysts as the Efficient Counter Electrodes in Rigid and Plastic Dye-Sensitized Solar Cells

Kladkaew

Lin

Chanlek

et al. 2022

ACS Appl. Energy Mater.

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In this study, a core−shell structured multiwall carbon nanotube@reduced graphene oxide nanoribbon (MWCNT@rGNR) was prepared by the facile unzipping of MWCNTs with mild conditions to synthesize the composites of the MWCNT@rGNR and polypyrrole (PPy) or MoSe 2 , which were used as the electrocatalysts for the counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The transmission electron microscopy image of the MWCNT@rGNR showed a graphene sheet structure found on both sides of the MWCNTs, indicating a central core of the MWCNTs and its shell of the rGNR. The obtained MWCNT@rGNR functionalized with PPy or MoSe 2 was envisaged to have the advantages of both component, that are the unique electronic structure of the MWCNT@rGNR and the synergistic effects of conductive PPy or electrocatalytically active MoSe 2 , respectively. The DSSCs with PPy/MWCNT@rGNR 0.3 and MoSe 2 /MWCNT@rGNR 0.3 showed comparable efficiency (photoelectric conversion efficiency, PCE = 7.48 and 8.34%, respectively), short-circuit current (I sc = 17.97 and 17.11 mA cm −2 , respectively), and open-circuit voltage (V oc = 0.80 and 0.84 V, respectively) without any loss of the fill factor (FF = 0.52 and 0.58, respectively) as compared to the cell fabricated using a standard Pt electrode. The PCE of a standard Pt CE was 7.70% with an I sc of 16.09 mA cm −2 , V oc of 0.76 V, and FF of 0.63. According to the results of the electrochemical measurements, composites with PPy or MoSe 2 showed better electrocatalytic activity, higher redoxactive surface area, and extremely large heterogeneous electron transfer rate constant. The plastic devices assembled with the PPy/ MWCNT@rGNR 0.3 and MoSe 2 /MWCNT@rGNR 0.3 coated on a flexible plastic substrate (indium tin oxide-coated polyethylene naphthalate; ITO/PEN)exhibited impressive PCEs of 4.61 and 5.25%, respectively, comparable to those coated on the rigid fluorinedoped tin oxide glass substrate. This work presented a facile low-temperature method to fabricate high-performance MWCNT@ rGNR composite-based CEs to make them applicable to large-scale plastic DSSCs.

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“…To overcome the above disadvantages, numerous approaches have been proposed to heighten the photocathodic protection ability of TiO 2 -based photoelectrodes. These approaches include surface modification [13], designing highly ordered TiO 2 nanotubes (NTs) [14], doping with metals or non-metals [15][16][17][18], and constructing heterojunctions [19][20][21]. More specifically, constructing heterojunctions by combining with other materials has proven to be a valid method for improving the photoelectrochemical properties of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Light

Song

Cui

et al. 2021

Nanoscale Res Lett

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TiO2 is an attractive semiconductor suitable for photocathodic protection, but its weak absorption of visible light and low quantum yield limit its usage. Here, a new heterostructured SnIn4S8 nanosheet/TiO2 nanotube photoanode was prepared and its photocathodic protection performance was analyzed. SnIn4S8 nanosheets were uniformly deposited on the surface of the TiO2 nanotube via a solvothermal treatment. The SnIn4S8/TiO2 composite exhibited better photocathodic protection performance compared with pure TiO2 nanotubes, owing to its good visible-light response and photogenerated carrier separation efficiency. Moreover, the composite exhibited a maximum photocurrent density of 100 μA cm−2 for a 6 h solvothermal reaction under visible light irradiation. The negative shift of the photoinduced potential of Q235 carbon steel connected to the composite could reach 0.45 V versus SCE. Therefore, the SnIn4S8/TiO2 composite can offer efficient photocathodic protection for Q235 carbon steel against corrosion in 3.5 wt% NaCl solution. This work provides a new approach for the development of high-efficient photoanode materials for the photocathodic protection of metals.

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Development of MoSe2/PANI composite nanofibers as an alternative to Pt counter electrode to boost the photoconversion efficiency of dye sensitized solar cell

Cited by 30 publications

References 52 publications

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Well-Dispersive Polypyrrole and MoSe₂ Embedded in Multiwalled Carbon Nanotube@Reduced Graphene Oxide Nanoribbon Electrocatalysts as the Efficient Counter Electrodes in Rigid and Plastic Dye-Sensitized Solar Cells

Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Light

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Development of MoSe2/PANI composite nanofibers as an alternative to Pt counter electrode to boost the photoconversion efficiency of dye sensitized solar cell

Cited by 30 publications

References 52 publications

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Cu2NiSnS4/Graphene Nanohybrid as a newer counter electrode to boost-up the photoconversion efficiency of dye sensitized solar cell

Well-Dispersive Polypyrrole and MoSe2 Embedded in Multiwalled Carbon Nanotube@Reduced Graphene Oxide Nanoribbon Electrocatalysts as the Efficient Counter Electrodes in Rigid and Plastic Dye-Sensitized Solar Cells

Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Light

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Product

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Well-Dispersive Polypyrrole and MoSe₂ Embedded in Multiwalled Carbon Nanotube@Reduced Graphene Oxide Nanoribbon Electrocatalysts as the Efficient Counter Electrodes in Rigid and Plastic Dye-Sensitized Solar Cells