Highly efficient CdSe/CdS co-sensitized TiO2 nanotube films for photocathodic protection of stainless steel

Zhang, Juan; Du, Rong-Gui; Lin, Zhonglu; Zhu, Yanfeng; Guo, Ya; Qi, Hai-Qing; Xu, Likun; Lin, Changjian

doi:10.1016/j.electacta.2012.07.120

Cited by 66 publications

(31 citation statements)

References 24 publications

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“…Using these parameters mentioned above, researchers can compare electron transport and diffusion property at different photoanodes in DSSC, such as photoanodes made of different materials (e.g., TiO 2 or combined oxides) [79][80][81][82][83][84][85][86][87], different morphologies and different structures (e.g., nanoparticles, nanotubes, nanorods, or complex structures) [88][89][90][91][92][93][94][95][96], different crystal forms (e.g., anatase and rutile for TiO 2 ) [97], and different substrates (e.g., rigid or flexible) [90,98]. For instance, we used EIS to compare two different microspheres photoanode-based DSSC, and the obtained Nyquist plots were shown in Fig.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Zheng

Wen

et al. 2015

Science Bulletin

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Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Zheng

Wen

et al. 2015

Science Bulletin

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“…Similar to our previous work [30],the highly ordered nanotube films on the cleaned Ti foils (99.7% purity) with dimensions of 15 mm×10 mm×0.1 mm were fabricated by an anodic oxidation method at 20 V for 30 min in a two-electrode electrolytic cell at room temperature.The Ti foil and a platinum sheet served as the working electrode and the counter electrode, respectively. The electrolyte was a glycerol solution containing 0.5 wt% NH 4 F and 40 wt% H 2 O.…”

Section: Preparation Of Tio 2 Nanotube Filmsmentioning

confidence: 99%

“…The preparation of CdTe QDs on the TiO 2 nanotube film was conducted by pulsed potential electrodeposition in a three-electrode electrolytic cellby an Autolab PGSTAT A thin shell of ZnS QDs was prepared onto the CdTe/TiO 2 composite filmby alternately immersing the film sample into a 0.6 M Zn(NO 3 ) 2 ethanol solution and a 0.1M Na 2 S methanol solution for 1 min for five repeated operation cycles, which is similar to our previous work [19,30].Finally, the specimen with a ZnS/CdTe/TiO 2 film was rinsed with deionized water and dried in air.…”

Section: Fabrication Of Cdte Qdsand Zns/cdte/tio 2 Composite Filmsmentioning

confidence: 99%

Fabrication of CdTe/ZnS core/shell quantum dots sensitized TiO2 nanotube films for photocathodic protection of stainless steel

Zhang

Zhu

et al. 2015

Corrosion Science

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“…• C for 2 h. According to the literatures, 25 Preparation of Pt CEs.-To fabricate the Pt counter electrodes as reference, 5 mM HPtCl 4 aqueous (0.01 mL) was drop casted onto the FTO substrates (1 cm × 1.5 cm) and annealed at 400…”

Section: Methodsmentioning

confidence: 99%

NiS₂Nanosheet Films Supported on Ti Foils: Effective Counter Electrodes for Quantum Dot-Sensitized Solar Cells

Cheng

Hong

Xiang

et al. 2018

J. Electrochem. Soc.

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Ni(OH) 2 nanosheet films were fabricated on Ti foils by a simple hydrothermal method and subsequently converted into NiS 2 via a vulcanized post-treatment at high temperature. The resultant NiS 2 nanosheet films were applied to quantum dot-sensitized solar cells (QDSSCs) as counter electrodes (CEs), showing great electrocatalytic activity with low charge-transfer resistance and high exchange current density in the reduction of the polysulfide electrolyte. An optimized power conversion efficiency up to 2.25% was achieved for the optimum NiS 2 -based QDSSC, suggesting an 51% enhancement in comparison with that of the QDSSC featuring the Pt CE (1.49% Quantum dot-sensitized solar cells (QDSSCs) have attracted great attention due to their low cost, easy fabrication, and high theoretical power conversion efficiency.1 Quantum dots (QDs) have attractive merits as the light absorber because of, for example, the sizedependence of the optical properties with strong light response, tunable band gaps, and the possibility to achieve high efficiency by generating multiple electron/hole pairs due to the impact-ionization effect in QDs.2 A typical QDSSC is assembled with a photoanode (e.g., TiO 2 ) sensitized with semiconductor QDs (e.g., CdS, CdSe or PbS), an electrolyte containing a redox couple (e.g., S 2− /S x 2− ), and a counter electrode (e.g., Pt, CoS and Cu 2 S).3 To improve the cell performance, significant effort has been devoted to optimizing all of the components in QDSSCs.4 So far, the highest power conversion efficiency (PCE) of QDSSCs is over 11%. 5The counter electrode (CE) is one of the indispensable components in QDSSCs, in which the electron transfer occurs to regenerate the oxidized species in the electrolyte and keep the circuit running.6 Pt was widely used as the CE material in the early QDSSCs after Gratzel et al. found that it had excellent electric catalytic reduction properties in the I 3 − /I − redox couple. 7 However, the catalytic reduction activity of Pt is poorly active in the S 2− /S x 2− redox couple in QDSSCs because sulfur atoms would be actively absorbed on Pt's surface to reduce its conductivity, consequently generating a considerable overpotential for the electrolyte reduction, and thereby resulting in the performance decrease of QDSSCs. 20 Among the various metal sulfides, NiS 2 , a typical p-type semiconductor, has also attracted much attention because of its novel electrical, optical, and magnetic properties for significant potential applications in many fields, 21,22 for example, dye-sensitized solar cells. 23 However, as compared to NiS, the application of NiS 2 films as CEs in QDSSCs is relatively rare. In addition, the direct growth of NiS 2 nanostructured films on metal foils has not been reported. The metal foil supported NiS 2 films may inherit some advantages from the metal substrates, such as the excellent conductivz E-mail: sunlan@xmu.edu.cn; mdye@xmu.edu.cn ity and flexibility for potential application in bendable electrochemical devices.In this regard, a vertical NiS 2 nanoshe...

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Highly efficient CdSe/CdS co-sensitized TiO2 nanotube films for photocathodic protection of stainless steel

Cited by 66 publications

References 24 publications

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Fabrication of CdTe/ZnS core/shell quantum dots sensitized TiO2 nanotube films for photocathodic protection of stainless steel

NiS₂Nanosheet Films Supported on Ti Foils: Effective Counter Electrodes for Quantum Dot-Sensitized Solar Cells

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Highly efficient CdSe/CdS co-sensitized TiO2 nanotube films for photocathodic protection of stainless steel

Cited by 66 publications

References 24 publications

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Fabrication of CdTe/ZnS core/shell quantum dots sensitized TiO2 nanotube films for photocathodic protection of stainless steel

NiS2Nanosheet Films Supported on Ti Foils: Effective Counter Electrodes for Quantum Dot-Sensitized Solar Cells

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NiS₂Nanosheet Films Supported on Ti Foils: Effective Counter Electrodes for Quantum Dot-Sensitized Solar Cells