PEDOT Nanotube Arrays as High Performing Counter Electrodes for Dye Sensitized Solar Cells. Study of the Interactions Among Electrolytes and Counter Electrodes

Trevisan, Roberto; Döbbelin, Markus; Boix, Pablo P.; Barea, Eva M.; Tena‐Zaera, Ramón; Mora‐Seró, Iván; Bisquert, Juan

doi:10.1002/aenm.201100324

Cited by 152 publications

(101 citation statements)

References 22 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…4, two features are observable in the recorded spectra: a low-frequency feature due to the electrolyte diffusion and a high-frequency arc due to the charge transfer in the interface. 26 The Nyquist plots obtained with EIS measurements can be simulated by the equivalent circuit (inset in Fig. 4) and the relevant values are summarized in Table I.…”

Section: Resultsmentioning

confidence: 99%

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio

Zhang

Guo

Zhen

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

Due to their special role in surface atoms, charge transfer channels and catalytic active sites, morphologies of electrocatalysts produce morphology-property effects in electrocatalysis. To study this effect, a series of specific stoichiometric ratios of nickel and selenium, Ni 1-χ Se, with different surface atom concentrations and morphologies, were synthesized on graphene via several thermal-reduction methods. In addition, we systematically investigated the morphology-property effect of a Ni 1-χ Se series based on electrochemical impedance spectra (EIS), cyclic voltammetry (CV), and Tafel polarization experiments. The Ni 1-χ Se nanoparticles demonstrated superior performance in electrocatalysis than that of Ni 1-χ Se nanoplates. After nanoplates were assembled to form nanospheres, Ni 1-χ Se nanospheres exhibited higher catalytic activity in terms of reducing I 3 − and multiple times faster charge-transfer velocities than those of Ni 1-χ Se nanoplates. Synthetically electrocatalytic properties of Ni 1-χ Se series were also measured as counter cells (CEs) of dye-sensitized solar cells (DSSCs). Ni 1-χ Se nanoparticles showed a higher power conversion efficiency (PCE) (7.33%) in a DSSC cell than when using a Pt CE (7.02%). The performance of Ni 1-χ Se nanoplates (6.57%) was worse than that of Ni 1-χ Se nanoparticles and Pt CEs. Simultaneously the self-assembled Ni 1-χ Se nanospheres (7.37%) exhibited PCE similar to that found with Due to the great effect of morphology on electrocatalytic properties, controlling the morphologies of nanomaterials to develop highly effective electrocatalysts has been a subject of intense research. 1-3Morphology-property effects mainly focus on the different concentrations and types of surface atoms resulting from different morphologies. Surface atoms greatly affect the adsorption energy and reaction activation energy of electrocatalysts. 4 In addition, they cause differences in the shapes and amounts of catalytic active sites. The collision among reactants and catalytic active sites is the key segment in the catalytic reaction process. 5 Thus, morphology exerts an influence on the activity and selectivity of electrocatalysts. Recent research has revealed that electrocatalysts with different morphologies exhibited different charge transfer abilities due to the different charge transfer channels.6-8 Our group has reported that microsphere NiSe 2 /RGO showed a better electrocatalytic performance than that of octahedron NiSe 2 /RGO, and mesoporous Ni 0.85 Se owned a high catalytic activity and fast electron-transport ability.9,10 More research is required to further explore the mechanism of morphology-property effect in electrocatalysis reaction.Many researchers have focused on transition metal chalcogenides (TMCs) with a wide range of potential applications in the field of material science.11-13 Specific properties of TMCs rely on their distinctive electronegativity, valence bond, and structure, as well as outer electrons of metal and chalcogens, etc. Furthermore, the great covalency of...

show abstract

Section: Resultsmentioning

confidence: 99%

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio

Zhang

Guo

Zhen

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…15 Fihly, platinum-free counter-electrodes, such as PEDOT and ITO, are at the focal point of development. 27,[115][116][117][118][119][120][121][122][123][124] Although platinum is the superior catalyst in DSSC, drawbacks including high price, rarity, and susceptibility to corrosion by iodide stimulate the search for new counter-electrodes. To this end, several low-cost materials -multifunctional nanocarbons, [125][126][127][128][129][130][131] metal oxide, 132 and transition metal carbides and suldes 133-135 -have been probed as alternatives.…”

Section: Implementing Multifunctional Nanocarbons Into Dsscmentioning

confidence: 99%

Recent advances in multifunctional nanocarbons used in dye-sensitized solar cells

Costa

Lodermeyer

Casillas

et al. 2014

Energy Environ. Sci.

View full text Add to dashboard Cite

Throughout recent years the implementation of nanocarbons into dye-sensitized solar cells (DSSC) has resulted in important breakthroughs. The most relevant of them in this context are (i) the enhancement of charge transport and charge collection in nanocarbon-doped electrodes, (ii) the introduction of nanocarbon interlayers that simultaneously reduce the charge recombination and increase the charge collection efficiency, (iii) the use of nanocarbon-based, iodine-free, solid-state electrolytes featuring excellent diffusion coefficients and catalytic efficiencies, (iv) the use of novel nanocarbon-based hybrid dyes, and (v) the use of nanocarbons towards platinum-free counter electrodes. The first four aforementioned aspects are thoroughly described in this review. Broader contextThroughout recent years the implementation of nanocarbons into dye-sensitized solar cells (DSSC) has resulted in important breakthroughs. The most relevant of them in this context are (i) the enhancement of charge transport and charge collection in nanocarbon-doped electrodes, (ii) the introduction of nanocarbon interlayers that simultaneously reduce the charge recombination and increase the charge collection efficiency, (iii) the use of nanocarbon-based, iodine-free, solid-state electrolytes featuring excellent diffusion coefficients and catalytic efficiencies, (iv) the use of novel nanocarbon-based hybrid dyes, and (v) the use of nanocarbons towards platinum-free counter electrodes. The rst four aforementioned aspects are thoroughly described in this review.

show abstract

“…Dye-sensitized solar cells (DSCs) have received considerable attention as a next generation photovoltaic device due to their high photovoltaic conversion efficiency ($12%), low cost and easy fabrication process [1][2][3]. Most DSCs are made of a dye-sensitized nanoporous TiO 2 film on the fluorine-doped tin oxide (FTO glass) as a photoanode, a liquid electrolyte containing iodide/triiodide (I À /I 3 À ) redox couple, and a counter electrode.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) and carbon black composite as an electron injector into the electrolyte containing iodide redox couple

Kim

Kwon

Rhee

2015

Electrochimica Acta

View full text Add to dashboard Cite

PEDOT Nanotube Arrays as High Performing Counter Electrodes for Dye Sensitized Solar Cells. Study of the Interactions Among Electrolytes and Counter Electrodes

Cited by 152 publications

References 22 publications

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio

Recent advances in multifunctional nanocarbons used in dye-sensitized solar cells

Electrochemical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) and carbon black composite as an electron injector into the electrolyte containing iodide redox couple

Contact Info

Product

Resources

About

PEDOT Nanotube Arrays as High Performing Counter Electrodes for Dye Sensitized Solar Cells. Study of the Interactions Among Electrolytes and Counter Electrodes

Cited by 152 publications

References 22 publications

Morphology–Property Effect in Electrocatalysis Based on Ni1-χSe@Graphene Series with Specific Stoichiometric Ratio

Morphology–Property Effect in Electrocatalysis Based on Ni1-χSe@Graphene Series with Specific Stoichiometric Ratio

Recent advances in multifunctional nanocarbons used in dye-sensitized solar cells

Electrochemical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) and carbon black composite as an electron injector into the electrolyte containing iodide redox couple

Contact Info

Product

Resources

About

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio

Morphology–Property Effect in Electrocatalysis Based on Ni_1-χSe@Graphene Series with Specific Stoichiometric Ratio