Electrochemical Properties of Graphene/PEDOT:PSS Counter Electrode in Dye-sensitized Solar Cells

Jeong, Gil-Ha; Kim, Seok-Jae; Ko, Hyun-Seok; Han, Eun‐Mi; Park, Kyung Hee

doi:10.1080/15421406.2015.1095272

Cited by 6 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A thin layer could be observed on the FTO electrodes after 60 s of deposition at −1.3 V. However, no oxidation peaks—that is, neither O1 nor O2—were recorded when Si/Ti/Au was used as a working electrode. It is well known that FTO catalyzes the electrodeposition of various polymers such as polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene), and polybithiophene [ 39 , 40 , 41 ]. Consequently, the reduction peak observed with the THF (Bath 1), PS- b -PEO (Bath 2), and Ni (Bath 3) solutions can be assumed to indicate the simultaneous deposition of THF, PS- b -PEO, and/or Ni, depending on the system, as well as the hydrogen evolution reaction.…”

Section: Resultsmentioning

confidence: 99%

Electrodeposition of Mesoporous Ni-Rich Ni-Pt Films for Highly Efficient Methanol Oxidation

et al. 2020

View full text Add to dashboard Cite

The use of soft templates for the electrosynthesis of mesoporous materials has shown tremendous potential in energy and environmental domains. Among all the approaches that have been featured in the literature, block copolymer-templated electrodeposition had robustness and a simple method, but it practically cannot be used for the synthesis of mesoporous materials not based on Pt or Au. Nonetheless, extending and understanding the possibilities and limitations of block copolymer-templated electrodeposition to other materials and substrates is still challenging. Herein, a critical analysis of the role of the solution’s primary electroactive components and the applied potential were performed in order to understand their influences on the mesostructure of Ni-rich Ni-Pt mesoporous films. Among all the components, tetrahydrofuran and a platinum (IV) complex were shown to be crucial for the formation of a truly 3D mesoporous network. The electrosynthesized well-ordered mesoporous Ni-rich Ni-Pt deposits exhibit excellent electrocatalytic performance for methanol oxidation in alkaline conditions, improved stability and durability after 1000 cycles, and minimal CO poisoning.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrodeposition of Mesoporous Ni-Rich Ni-Pt Films for Highly Efficient Methanol Oxidation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Although PT and its derivatives (including PEDOT) present similar electrocatalytic activity to that of PPy CEs, the conductivity of PEDOT is 1–3 times higher than that of PPy. , PEDOT is generally doped with polystyrene sulfonic acid (PSS) to enhance conductivity and compatibility with protic ionic solvents . A CE fabricated with GR dots or PEDOT:PSS complex sheets exhibited high superficial roughness, which implies a higher electrocatalytic activity for the I – /I 3 – redox couple and a lower charge transfer resistance at the CE/electrolyte interface than that of PEDOT:PSS CE. , …”

Section: Part 1 Applications That Take Advantage Of the Tridimensiona...mentioning

confidence: 99%

“…452 A CE fabricated with GR dots or PEDOT:PSS complex sheets exhibited high superficial roughness, which implies a higher electrocatalytic activity for the I − /I 3 − redox couple and a lower charge transfer resistance at the CE/electrolyte interface than that of PEDOT:PSS CE. 453,454 On the other hand, in an effort to overcome the leakage problems in liquid electrolyte-based DSSCs, solid state DSSCs (ssDSSCs) provide a suitable solution. Due to the ease of solution-based processing and excellent intrinsic hole transport properties, CPs have been proposed as HTM to replace the standard material used to date, spiro-OMeTAD (2,2′,7,7′tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene).…”

mentioning

confidence: 99%

Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

et al. 2018

View full text Add to dashboard Cite

Conducting polymers (CPs), thanks to their unique properties, structures made on-demand, new composite mixtures, and possibility of deposit on a surface by chemical, physical, or electrochemical methodologies, have shown in the last years a renaissance and have been widely used in important fields of chemistry and materials science. Due to the extent of the literature on CPs, this review, after a concise introduction about the interrelationship between electrochemistry and conducting polymers, is focused exclusively on the following applications: energy (energy storage devices and solar cells), use in environmental remediation (anion and cation trapping, electrocatalytic reduction/oxidation of pollutants on CP based electrodes, and adsorption of pollutants) and finally electroanalysis as chemical sensors in solution, gas phase, and chiral molecules. This review is expected to be comprehensive, authoritative, and useful to the chemical community interested in CPs and their applications.

show abstract

“…The results were well in accordance with the FF values demonstrated by related devices. We emphasize that the remarkably high value of FF of the device based on H‐CE (0.73) is one of the highest values reported in the literature especially for the metal‐free carbon CE‐based liquid DSSCs (Figure ) …”

Section: Resultsmentioning

confidence: 74%

“…We emphasize that the remarkably high value of FF of the device based on H-CE (0.73) is one of the highest values reported in the literature especially for the metal-free carbon CE-based liquid DSSCs ( Figure 5). 45,[53][54][55][56][57][58][59][60][61][62][63][64][65]…”

Section: Photovoltaic Performance Of Dsscsmentioning

confidence: 99%

Facile fabrication of low‐cost low‐temperature carbon‐based counter electrode with an outstanding fill factor of 73% for dye‐sensitized solar cells

et al. 2020

View full text Add to dashboard Cite

Summary Developing chemically inert, electrically conductive, and catalytically active counter electrodes (CEs) to replace conventional Pt‐based ones is highly desirable for dye‐sensitized solar cells. Herein, we reported a facile, cost‐effective, and low‐temperature synthesis pathway to develop carbon‐based CEs. The performance of homemade carbon paste (H‐CP)–based CE (H‐CE) was compared with that of commercial carbon paste (C‐CP)–based CE (C‐CE) and Pt‐based CE (Pt‐CE). The scanning electron microscope (SEM) results showed that H‐CE demonstrated a penetrable surface structure which facilitates the diffusion of electrolyte through the carbon electrode. This phenomenon enhanced the triiodide reduction with respect to C‐CE having a compact structure that limits the electrolyte diffusion. The charge transfer properties and catalytic activities of the investigated devices were explored using electrochemical impedance spectroscopy and Tafel polarization measurements; the obtained results indicated that the device based on H‐CE revealed relatively lower charge transfer resistance and higher exchange current density compared with C‐CE‐based device. The current‐voltage measurements showed that the device based on H‐CE has a power conversion efficiency of 2.70%, which was about 1.6 times higher than that of the device based on C‐CE (1.68%). Furthermore, a fill factor of 73% was achieved for the device based on H‐CE, which outperformed the Pt‐based device (69%) and was among one of the highest values obtained in the literature. Also, a tape adhesion test performed on H‐CP‐coated glass substrate displayed its excellent robustness.

show abstract

Electrochemical Properties of Graphene/PEDOT:PSS Counter Electrode in Dye-sensitized Solar Cells

Cited by 6 publications

References 12 publications

Electrodeposition of Mesoporous Ni-Rich Ni-Pt Films for Highly Efficient Methanol Oxidation

Electrodeposition of Mesoporous Ni-Rich Ni-Pt Films for Highly Efficient Methanol Oxidation

Conducting Polymers in the Fields of Energy, Environmental Remediation, and Chemical–Chiral Sensors

Facile fabrication of low‐cost low‐temperature carbon‐based counter electrode with an outstanding fill factor of 73% for dye‐sensitized solar cells

Contact Info

Product

Resources

About