In situ synthesis of binary cobalt–ruthenium nanofiber alloy counter electrode for electrolyte-free cadmium sulfide quantum dot solar cells

Du, Na; Ren, Lei; Sun, Weifu; Jin, Xiao; Zhao, Qing; Cheng, Yuanyuan; Wei, Tai‐Huei; Li, Qinghua

doi:10.1016/j.jpowsour.2015.03.041

Cited by 9 publications

(3 citation statements)

References 54 publications

(27 reference statements)

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“…The R ct value represents the overall catalytic behavior of the Pt electrode and conductive gel electrolyte . The smaller the R ct value, the better the catalytic performance of the DSSC. − The semicircle at the low frequency represents the diffusion resistance ( R w ) of iodide/triiodide in the electrolyte. With the addition of MXene in the rGO electrolyte, the R ct value of the electrolyte was significantly reduced, to reach a minimum of 3.51 Ω/cm 2 with the MXene/rGO ratio of 2/1.…”

Section: Resultsmentioning

confidence: 99%

Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Wen

Sun

Qiao

et al. 2022

ACS Appl. Energy Mater.

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The liquid electrolyte causes the corresponding leakage and sealing problems in the construction of dye-sensitized solar cells (DSSCs). Currently, quasi-solid-state polymer-based electrolytes have been reported to effectively improve the leakage and volatilization of traditional liquid electrolytes in DSSCs. In this work, reduced graphene oxide (rGO) and the intercalation of MXene/rGO were utilized in the copolymer polyethylene oxide/poly(vinylidene fluoride-co-hexafluoropropylene) as a printable gel electrolyte for the preparation of quasi-solid-state DSSCs (QS-DSSCs). The effects of different contents of rGO and different ratios of MXene/rGO intercalation on the photoelectric performance of DSSCs were well studied. When the rGO content was 0.5 wt %, the power conversion efficiency (PCE) of DSSC was about 7.781%. Specifically, when the ratio of MXene/rGO was 2/1, the photovoltaic performance of DSSCs was greatly enhanced. The corresponding short current density (J sc ), open-circuit voltage (V oc ), fill factor, and PCE were obtained to be 15.170 mA/cm 2 , 0.783 V, 0.695, and 8.255%, respectively. With the intercalation structure between MXene and rGO, the conductivity of electrolytes seemed to be improved through the possible shortening of transmission and diffusion distance of electrolyte ions. The printable electrolyte could achieve an energy conversion efficiency of 29.94% under 1000 lux illumination. A long-term stability (>95%) of QS-DSSCs was also achieved with the composite of MXene/rGO over 1000 h. Finally, this ready screen-printing technology with the electrolyte of the MXene/rGO composite in the copolymer would have great potential for the large-scale manufacture of flexible DSSCs in the future.

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Section: Resultsmentioning

confidence: 99%

Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Wen

Sun

Qiao

et al. 2022

ACS Appl. Energy Mater.

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“…Important challenges today are the minimization of the In this regard, it is reported that Ru−Co alloy exhibits an outstanding electrochemical property and electrocatalytic activity, which has aroused widespread attention from industrial circles. 23 The results indicated that two transition metals can have a well synergistic effect on the electrocatalytic ability of CEs. To explore other cost-effective and high catalytic performance, Pt-free ternary metallic selenides, including NiCoSe and RuCoSe CEs, have been synthesized by one-step hydrothermal procedures.…”

Section: Introductionmentioning

confidence: 92%

“…In this regard, it is reported that Ru–Co alloy exhibits an outstanding electrochemical property and electrocatalytic activity, which has aroused widespread attention from industrial circles . The results indicated that two transition metals can have a well synergistic effect on the electrocatalytic ability of CEs.…”

Section: Introductionmentioning

confidence: 99%

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

Liu

Jiang

Liu

et al. 2020

ACS Appl. Energy Mater.

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The high cost and instability of platinum (Pt) counter electrodes (CEs) are two persistent issues in dye-sensitized solar cells (DSSCs). Here, ternary selenide NiCoSe and RuCoSe-nanostructured CEs are prepared by a simple one-step hydrothermal method. We mainly investigate the synergistic effect of ternary transition metals on the electrocatalytic properties. As a result, the photoelectric conversion efficiency (PCE) of NiCoSe CEs DSSCs with the enhanced efficiency up to 8.19% can be achieved. The excellent catalytic properties of the NiCoSe alloy selenide on I 3 − can be attributed to the expanded active sites, matched work function, redistributed electron structures, and reduced interface resistance. The facile preparation approach and outstanding catalytic behaviors offer applications of available DSSCs with low cost, superior stability, and promising performance.

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High efficiency bifacial quasi-solid-state dye-sensitized solar cell based on CoSe2 nanorod counter electrode

Xia

Wang

et al. 2020

Applied Surface Science

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In situ synthesis of binary cobalt–ruthenium nanofiber alloy counter electrode for electrolyte-free cadmium sulfide quantum dot solar cells

Cited by 9 publications

References 54 publications

Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

High efficiency bifacial quasi-solid-state dye-sensitized solar cell based on CoSe2 nanorod counter electrode

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In situ synthesis of binary cobalt–ruthenium nanofiber alloy counter electrode for electrolyte-free cadmium sulfide quantum dot solar cells

Cited by 9 publications

References 54 publications

Ti3C2 MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Ti3C2 MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

High efficiency bifacial quasi-solid-state dye-sensitized solar cell based on CoSe2 nanorod counter electrode

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Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells

Ti₃C₂ MXene-Reduced Graphene Oxide Composite Polymer-Based Printable Electrolyte for Quasi-Solid-State Dye-Sensitized Solar Cells