CN202871586U

CN202871586U - Counter electrode used for dye-sensitized solar cell

Info

Publication number: CN202871586U
Application number: CN 201220451107
Authority: CN
Inventors: 翁韬; 武明星
Original assignee: YINGKOU OPV TECH NEW ENERGY Co Ltd
Current assignee: YINGKOU OPV TECH NEW ENERGY Co Ltd
Priority date: 2012-06-06
Filing date: 2012-09-06
Publication date: 2013-04-10
Anticipated expiration: 2022-09-06

Abstract

Provided is a counter electrode used for a dye-sensitized solar cell. The counter electrode comprises a substrate with a transparent conducting oxide, and carbides loaded by mesoporous carbon on the substrate with the transparent conducting oxide. The carbide is one selected from vanadium carbide, titanium carbide, zirconium carbide, niobium carbide, chromium carbide molybdenum carbide, and tungsten carbide, or a mixture thereof. The substrate with the transparent conducting oxide is one selected from Glass/FTO, Glass/ITO, PEN/ITO, PET/ITO, PEN/AZO, PET/AZO, PEN/FTO, PET/FTO, or a high-molecular material with conduction characteristics, or a metal substrate transparent conducting oxide substrate. The counter electrode used for the dye-sensitized solar cell is low in cost, and can improve DSCs photoelectric conversion efficiency. In addition, the counter electrode is low in price, simple in preparation, and is a potential Pt counter electrode substitute product.

Description

A kind of for dye-sensitized solar cells to electrode

Technical field

The utility model relates to technical field of solar batteries, relate in particular to a kind of for dye-sensitized solar cells to electrode.

Background technology

In recent years, because metal nanoparticle has unique optics, electricity, magnetics, and the characteristic such as catalysis, so that the metal nanoparticle adsorption becomes one of study hotspot.To the significant components of electrode as DSCs, normally with the Pt thin film adsorbs on conductive substrates.Main Function to electrode is that external electrical is transferred in the electrolyte with oxidation-reduction pair, simultaneously the reduction process of oxidation-reduction pair is played catalytic action.

The research of DSCs concentrates on the following aspects at present: the theory analysis of electronic transmission process and model are set up, the theory analysis of electronic transmission process and, the theory analysis of electronic transmission process and model are set up, electrolytical solid state substitutes etc.Few to the research and comparison aspect the electrode at DSCs.The method that tradition DSCs normally adopts chemical heat to decompose to the preparation of electrode, the platinum acid chloride solution for preparing is coated in the electro-conductive glass substrate uniformly, at 420 ℃ of lower constant temperature 30 min, naturally cool to afterwards 80 ℃, form the platinum electrode with good conductive and mirror features.Perhaps the method low temperature preparation by rf magnetron sputtering has the Pt of different-thickness to electrode.

Although Pt is obvious to the efficient effect that improves DSCs, because Pt is noble metal, reserves are limited, and are expensive, are difficult for extensively promoting the use of.So, to seek a kind of cheaply, the Pt substitution material of catalytic performance effect excellence becomes industry problem demanding prompt solution.

So for the problem that prior art exists, this case designer relies on the industry experience for many years of being engaged in, the active research improvement, so had utility model a kind of for dye-sensitized solar cells to electrode.

The utility model content

The utility model is in the prior art, and it is limited to the electrode reserves that traditional flexibility is carried Pt, expensive, be difficult for extensively promoting the use of etc. defective provide a kind of for dye-sensitized solar cells to electrode.

Another purpose of the present utility model is in the prior art, and it is limited to the electrode reserves that traditional flexibility is carried Pt, expensive, and the defective such as being difficult for extensively promoting the use of provides a kind of and have this to the dye-sensitized solar cells of electrode.

In order to address the above problem, the utility model provide a kind of for dye-sensitized solar cells to electrode, described for dye-sensitized solar cells electrode is comprised the substrate with transparent conductive oxide, and be arranged on described carbide with suprabasil mesoporous carbon-loaded of transparent conductive oxide.

Optionally, described carbide is a kind of or its mixture in vanadium carbide, titanium carbide, zirconium carbide, niobium carbide, chromium carbide, molybdenum carbide, the tungsten carbide.

Optionally, described substrate with transparent conductive oxide is a kind of among Glass/FTO, Glass/ITO, PEN/ITO, PET/ITO, PEN/AZO, PET/AZO, PEN/FTO, the PET/FTO, the macromolecular material that perhaps has conductive characteristic perhaps is the substrate of metal substrate transparent conductive oxide.

Optionally, described mesoporous carbon is network structure.

For realizing another purpose of the present utility model, the utility model provides a kind of dye-sensitized solar cells, and described dye-sensitized solar cells has described in the utility model to electrode.

In sum, dye-sensitized solar cells low-cost counter electrode described in the utility model not only can improve the photoelectric conversion efficiency of DSCs, and cheap, and preparation is simple, is that a kind of potential Pt is to the electrode substitute products.

Description of drawings

Figure 1 shows that the utility model is used for the structural representation figure to electrode of dye-sensitized solar cells;

Figure 2 shows that the XRD collection of illustrative plates of the vanadium carbide of the utility model mesoporous carbon-loaded

Figure 3 shows that the SEM collection of illustrative plates of the vanadium carbide of the utility model mesoporous carbon-loaded

Figure 4 shows that the photoelectric conversion efficiency collection of illustrative plates of the dye-sensitized solar cells with low-cost counter electrode described in the utility model.

Embodiment

By describing technology contents, structural feature that the utility model creates in detail, being reached purpose and effect, below in conjunction with embodiment and cooperate accompanying drawing to be described in detail.

See also Fig. 1, Figure 1 shows that the structural representation of the low-cost counter electrode of the utility model dye-sensitized solar cells.Describedly for dye-sensitized solar cells electrode 1 is comprised the substrate 10 with transparent conductive oxide, described substrate 10 with transparent conductive oxide is a kind of among Glass/FTO, Glass/ITO, PEN/ITO, PET/ITO, PEN/AZO, PET/AZO, PEN/FTO, the PET/FTO preferably, the macromolecular material that perhaps has conductive characteristic perhaps is the substrate of metal substrate transparent conductive oxide; The carbide 11 of mesoporous carbon-loaded, the carbide 11 of described mesoporous carbon-loaded is arranged in the described substrate 10 with transparent conductive oxide, and described carbide is a kind of or its mixture in vanadium carbide, titanium carbide, zirconium carbide, niobium carbide, chromium carbide, molybdenum carbide, the tungsten carbide.

In the utility model, set forth as example take the vanadium carbide of mesoporous carbon-loaded, should not be considered as the restriction to the utility model scheme.The preparation method of described mesoporous carbon-loaded vanadium carbide comprises: the first, the F127 with 2.5g is dissolved in the 30 mL ethanolic solutions, stirs until fully dissolving; The second, add 1.65 g resorcinols, 0.5mL acetic acid stirs 30 min; Three, add 0.5 VOCl3, stir 30 min; Four, add 3ml formaldehyde, stir 30 min; Five, with the gained colloidal liquid 80 ℃ of constant temperature 3 days; Six, at 1100 ℃ of sintering 5 h, both the vanadium carbide of mesoporous carbon-loaded described in the utility model.

See also Fig. 2, Figure 2 shows that the XRD collection of illustrative plates of the vanadium carbide of the utility model mesoporous carbon-loaded.Wherein, the diffraction maximum correspondence of 23.6o appearance mesoporous carbon.Other lays respectively at 37.28 °, 43.38 °, 63.14 °, 75.80 °, 79.86 ° the corresponding vanadium carbide of five diffraction maximums.

See also Fig. 3, Figure 3 shows that the SEM collection of illustrative plates of the vanadium carbide of the utility model mesoporous carbon-loaded.As can be seen from Figure 3, described grey network structure is mesoporous carbon, and the white cube that is embedded in wherein is vanadium carbide.

For obtaining low-cost counter electrode 1 described in the utility model, the preparation method of described low-cost counter electrode 1 further comprises: the first, get the vanadium carbide of the described mesoporous carbon-loaded of 500mg, and add in the isopropyl alcohol of 4mL, ultrasonic dispersion 30min makes slurry; The second, the slurry spray gun with preparation uniformly sprays on the FTO electro-conductive glass; Three, under nitrogen atmosphere, 500 ℃ of sintering 30 minutes are made low-cost counter electrode of the present invention.

Further, the utility model comprises a kind of dye-sensitized solar cells with described low-cost counter electrode, and the preparation of described dye-sensitized solar cells comprises:

The first, the making of light anode; On the FTO electro-conductive glass, with knife coating titania slurry is prepared into the TiO2 film, 500 ℃ of sintering 30 minutes are cooled to 80 ℃, soak 16 hours in ruthenium dye N719, are made into the light anode.

The second, electrolyte is for containing I3 ^-/ I ^-Acetonitrile solution.

Three, be that the vanadium carbide of mesoporous carbon-loaded described in the utility model is to electrode to electrode.

Four, with the light anode of above-mentioned making, electrode is assembled, with the encapsulation of sarin film, then injecting electrolyte at intermediate course, be assembled into the DSSC battery.

See also Fig. 4, Figure 4 shows that the photoelectric conversion efficiency collection of illustrative plates of the dye-sensitized solar cells with low-cost counter electrode described in the utility model.Wherein, square representative is take Pt as the I-V curve to the DSSC of electrode, and circular representative is take the vanadium carbide of mesoporous carbon-loaded as the I-V curve to the DSSC of electrode.As shown in table 1, take the vanadium carbide of mesoporous carbon-loaded as to the open circuit voltage of the battery of electrode with fill factor, curve factor all than corresponding with the height of Pt to the battery of electrode.Simultaneously, be better than with Pt the battery of electrode take the vanadium carbide of mesoporous carbon-loaded as the photoelectric conversion efficiency to the battery of electrode.In sum, described in the utility model for dye-sensitized solar cells not only can improve the photoelectric conversion efficiency of DSCs to electrode, and cheap, preparation is simple, is that a kind of potential Pt is to the electrode substitute products.

Those skilled in the art all should be appreciated that, in the situation that does not break away from spirit or scope of the present utility model, can carry out various modifications and variations to the utility model.Thereby, if when any modification or modification fall in the protection range of appended claims and equivalent, think that the utility model contains these modifications and modification.

Claims

One kind be used for dye-sensitized solar cells to electrode, it is characterized in that, described electrode is comprised the substrate with transparent conductive oxide, and is arranged on described carbide with suprabasil mesoporous carbon-loaded of transparent conductive oxide.
As claimed in claim 1 for dye-sensitized solar cells to electrode, it is characterized in that described carbide is a kind of or its mixture in vanadium carbide, titanium carbide, zirconium carbide, niobium carbide, chromium carbide, molybdenum carbide, the tungsten carbide.
As claimed in claim 1 for dye-sensitized solar cells to electrode, it is characterized in that, described substrate with transparent conductive oxide is a kind of among Glass/FTO, Glass/ITO, PEN/ITO, PET/ITO, PEN/AZO, PET/AZO, PEN/FTO, the PET/FTO, the macromolecular material that perhaps has conductive characteristic perhaps is the substrate of metal substrate transparent conductive oxide.
Dye-sensitized solar cells as claimed in claim 1 to electrode, it is characterized in that described mesoporous carbon is network structure.
5. a dye-sensitized solar cells is characterized in that, described dye-sensitized solar cells has as claimed in claim 1 to electrode.