CN101887802B - Quasi-solid electrolyte used for dye-sensitized solar cell and preparation method thereof - Google Patents
Quasi-solid electrolyte used for dye-sensitized solar cell and preparation method thereof Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses quasi-solid electrolyte used for a dye-sensitized solar cell. Gels used for the quasi-solid electrolyte are a complex consisting of polyvinyl pyridine iodide and polyoxyethylene. In addition, the invention also discloses a preparation method of the quasi-solid electrolyte. In the quasi-solid electrolyte used for the dye-sensitized solar cell and the preparation method thereof, the quasi-solid electrolyte has a strong gel conductivity, and can strengthen the conductivity of the quasi-solid electrolyte, fulfill the aim of preventing solvents from flowing and improving the stability of the dye-sensitized solar cell and facilitate the production and application of the dye-sensitized solar cell; and the preparation method of the quasi-solid electrolyte has convenient and feasible process condition, facilitates large-scale popularization and application and has important significance in production practice.
Description
Technical field
The present invention relates to photoelectricity transformation technology field, particularly relate to a kind of quasi-solid electrolyte that is used for DSSC and preparation method thereof.
Background technology
As far back as 1991, it was the dye-sensitized solar cells of 7.1-7.9% that Gr professor tzel of engineering institutes such as Lausanne, SUI height has successfully developed photoelectric conversion efficiency.Compare with the photovoltaic silion cell, dye-sensitized solar cells does not adopt the high-purity inorganic semi-conducting material, has that production technology is simple, the advantage of low preparation cost.This dye-sensitized solar cells has adopted " sandwich " sandwich structure, from the anode to the negative electrode, be followed successively by conducting glass substrate, be adsorbed with organic dye receive porous polycrystalline titanium deoxid film, electrolyte and to electrode (being specially the electro-conductive glass that deposits platinum or carbon black).
At present, the electrolyte that is used for DSSC can be divided into three types of liquid electrolyte, quasi-solid electrolyte and all solid state electrolytes according to physical property.Wherein, though liquid electrolyte can obtain higher electricity conversion, exist solvent evaporates, leakage, battery to be difficult for defectives such as encapsulation, the long-term stability that has had a strong impact on DSSC is used.Though and do not have above-mentioned problem with inorganic p type, semiconductor material, the prepared all solid state electrolyte of organic hole transferring material; But; Because all solid state electrolyte is with relatively poor to the contact performance of electrode; Make that the photoelectric conversion efficiency of DSSC is generally lower, badly influence the overall performance of DSSC.
The gelation material of common preparation quasi-solid electrolyte comprises amide-type micromolecule gel, Nano particles of silicon dioxide, Kynoar-hexafluoropropylene copolymer and polyoxyethylene-acrylic copolymer etc.This type material is handled and is formed network configuration through organic solvent such as acetonitrile or ionic liquid being carried out gelation; The purpose that can reach solidified electrolyte, stop solvent and ionic liquid to flow; But; Existing gelation material does not all have conductive capability, thereby has limited the raising of adopting the DSSC photovoltaic performance of quasi-solid electrolyte.
Summary of the invention
In view of this; The purpose of this invention is to provide a kind of quasi-solid electrolyte that is used for DSSC and preparation method thereof; The gel conductive capability that this quasi-solid electrolyte has is strong, can strengthen the conductive capability of quasi-solid electrolyte, reaches the purpose that improves DSSC stability when stoping flow of solvent; Help the production and the application of DSSC; And the preparation method's of this quasi-solid electrolyte process conditions are convenient and easy, help applying on a large scale, are of great practical significance.
For this reason, the invention provides a kind of preparation method who is used for the quasi-solid electrolyte of DSSC, comprise step:
(1) polar organic solvent is put in the container;
(2) in container, add polyvinylpyridine salt compounded of iodine that mass concentration is 0.1 ~ 0.24g/mL, polyoxyethylene that mass concentration is 0.16 ~ 0.3g/mL, metal iodide that mass concentration is 0.15g/mL or imdazole derivatives salt compounded of iodine, iodine I
2, and make metal iodide or imdazole derivatives salt compounded of iodine and iodine I
2Mass ratio between 1.2 ~ 10;
(3) heat or carry out at ambient temperature ultrasonic concussion with 20 ~ 70 ℃ temperature and mix, make electrolyte gelization, finally form quasi-solid electrolyte.
[0007]Wherein, said polar organic solvent is methyl alcohol, ethanol and N, any one in the dinethylformamide or two or three.
Wherein, said polyoxyethylated molecular weight is between 100-5000000.
Wherein, said metal iodide be among lithium iodide LiI, sodium iodide NaI and the KI KI any one or two or three.
Wherein, Said imdazole derivatives salt compounded of iodine is 1-methyl-3-ethyl imidazol(e) salt compounded of iodine, 1-methyl-3-propyl imidazole salt compounded of iodine, 1-methyl-3-butyl imidazole salt compounded of iodine, 1; 2-methyl-3-propyl imidazole salt compounded of iodine and 1, any one in 2-methyl-3-butyl imidazole salt compounded of iodine or two or three.
?
[0011]Visible by above technical scheme provided by the invention; Compared with prior art, the invention provides a kind of quasi-solid electrolyte that is used for DSSC and preparation method thereof, the gel conductive capability that this quasi-solid electrolyte has is strong; Can strengthen the conductive capability of quasi-solid electrolyte; Reach the purpose that improves DSSC stability when stoping flow of solvent, help the production and the application of DSSC, and the preparation method's of this quasi-solid electrolyte process conditions are convenient and easy; Help applying on a large scale, be of great practical significance.
Embodiment
[0012]In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and execution mode.
The invention provides a kind of quasi-solid electrolyte that is used for DSSC; The gel that this quasi-solid electrolyte adopts is the compound of being made up of polyvinylpyridine salt compounded of iodine and polyoxyethylene, promptly is the co-mixing system by polyvinylpyridine salt compounded of iodine and two kinds of polymer of polyoxyethylene.
In the present invention, the composition structure expression of said polyvinylpyridine salt compounded of iodine is following:
Wherein, R is C
1-12Alkyl.
The quasi-solid electrolyte that is used for DSSC of the invention described above can prepare through following method:
(1) polar organic solvent is put in the container;
(2) in container, adding mass concentration is the polyvinylpyridine salt compounded of iodine of 0.01 ~ 1.0g/mL, the polyoxyethylene that mass concentration is 0.01 ~ 1.0g/mL, salt compounded of iodine (metal iodide or imdazole derivatives salt compounded of iodine) and the iodine I that mass concentration is 0.001 ~ 0.05g/mL
2, and make salt compounded of iodine (metal iodide or imdazole derivatives salt compounded of iodine) and iodine I
2Mass ratio between 1.2 ~ 10;
(3) heat or carry out at ambient temperature ultrasonic concussion with 20 ~ 70 ℃ temperature and mix, make electrolyte gelization, finally form quasi-solid electrolyte.
In the present invention, said polar organic solvent can be methyl alcohol, ethanol and N, any one in the dinethylformamide or two or three (i.e. a kind or 2 kinds or 3 kinds all can).
In the present invention, said polyoxyethylated molecular weight is between 100-5000000.
In the present invention, said salt compounded of iodine can be metal iodide or imdazole derivatives salt compounded of iodine.
In the present invention, on concrete the realization, said metal iodide can be any one or two or three (promptly 1 ~ 3 kind) among lithium iodide LiI, sodium iodide NaI and the KI KI.Said imdazole derivatives salt compounded of iodine can be 1-methyl-3-ethyl imidazol(e) salt compounded of iodine, 1-methyl-3-propyl imidazole salt compounded of iodine, 1-methyl-3-butyl imidazole salt compounded of iodine, 1; 2-methyl-3-propyl imidazole salt compounded of iodine and 1, any one in 2-methyl-3-butyl imidazole salt compounded of iodine or two or three.
In the present invention, on concrete the application,, at first, electro-conductive glass is carried out preliminary treatment, then the nano-crystalline titanium dioxide slurry is coated on the conductive glass surface of handling in order to prepare DSSC; Then, the titanium deoxid film that high temperature (being specially 450 ~ 550 ℃ temperature) sintering is obtained is heated to and immerses in the light-sensitive coloring agent after 70 ~ 90 ℃ the temperature and adsorbed 24-48 hour, thereby forms dioxy electric polarization titanium film; At last, the quasi-solid electrolyte that the invention described above is obtained be coated on titanium dioxide membrane electrode provided and platinum plating between the electrode, finally form quasi solid DSSC.
In order to know the photovoltaic performance of quasi solid DSSC, need carry out the photovoltaic performance test of DSSC.On concrete the application; The photovoltaic performance test of DSSC is through drawing lead respectively in titanium dioxide membrane electrode provided with to electrode; Be connected in the photovoltaic test macro of battery, the light-receiving area of DSSC is confirmed by the illiteracy plate that through hole area is 0.16.Export the sunlight of simulation with solar simulator (model is Oriel 91160-1000 (300W)), and luminous intensity is adjusted to 100mW/cm
2, record the current density-voltage curve of battery.In the present invention, the photoelectric conversion efficiency that the above-mentioned quasi solid DSSC for preparing has is 0.95%-4.53%, and open circuit voltage is 533-666mV, and short circuit current density is 0.5982-15.95mAcm-2, and fill factor, curve factor is 0.18-0.71.
Through specific embodiment technical scheme of the present invention is described below.
Embodiment 1
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine and the mass concentration that add mass concentration and be 0.2g/mL are that the molecular weight of 0.2g/mL is 300 polyoxyethylene, the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
In the present embodiment, said gathering (N-propyl group-4-vinylpridine) salt compounded of iodine chemical constitution following:
Said polyoxyethylated chemical constitution is:
;
The preparation of DSSC: the preparation of dye-sensitized solar cell anode is at first electro-conductive glass to be carried out preliminary treatment, then the nano-crystalline titanium dioxide slurry is coated on the conductive glass surface of handling.Immerse in the light-sensitive coloring agent after the titanium deoxid film that high temperature (being specially 450 ~ 550 ℃ temperature) sintering is obtained is heated to 80 ℃ and adsorbed 24 hours, form dioxy electric polarization titanium film; At last, with quasi-solid electrolyte be coated on titanium dioxide membrane electrode provided and platinum plating between the electrode, form quasi-solid-state dye sensitized solar cell.
The photovoltaic performance test of DSSC: the photovoltaic performance test of battery is through drawing lead respectively in titanium dioxide membrane electrode provided with to electrode, being connected in the photovoltaic test macro of battery.The light-receiving area of battery is that 0.16 illiteracy plate is confirmed through hole area.With solar simulator (model is Oriel 91160-1000 (300W)) output simulated solar irradiation, luminous intensity is adjusted to 100mW/cm
2, record the current density-voltage curve of battery.Photoelectric conversion efficiency is 4.5%, and open circuit voltage is 589mV, and short circuit current density is 12.97mAcm
-2, fill factor, curve factor is 0.59.
Embodiment 2
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic concussion mixes under the room temperature condition then, forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 2 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 2 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 1.3%, and open circuit voltage is 610mV, and short circuit current density is 9.902mAcm-2, and fill factor, curve factor is 0.22.
Embodiment 3
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 20000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 3 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 3 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 0.95%, and open circuit voltage is 645mV, and short circuit current density is 7.908mAcm
-2, fill factor, curve factor is 0.19.
Embodiment 4
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 4 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 4 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 2.2%, and open circuit voltage is 617mV, and short circuit current density is 7.308mAcm
-2, fill factor, curve factor is 0.49.
Embodiment 5
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-butyl-4-vinylpridine) salt compounded of iodine, mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
In the present embodiment, said gathering (N-butyl-4-vinylpridine) salt compounded of iodine chemical constitution following:
About the preparation of DSSC, present embodiment 5 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 5 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 1.3%, and open circuit voltage is 602mV, and short circuit current density is 7.213mAcm-2, and fill factor, curve factor is 0.31.
Embodiment 6
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-hexyl-4-vinylpridine) salt compounded of iodine, mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with ethanol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
In the present embodiment, said gathering (N-hexyl-4-vinylpridine) salt compounded of iodine chemical constitution following:
About the preparation of DSSC, present embodiment 6 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 6 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 0.39%, and open circuit voltage is 513mV, and short circuit current density is 1.213mAcm
-2, fill factor, curve factor is 0.62.
Embodiment 7
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.02g/mL with methyl alcohol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 7 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 7 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 3.5%, and open circuit voltage is 582mV, and short circuit current density is 15.95mAcm
-2, fill factor, curve factor is 0.38.
Embodiment 8
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.06g/mL with methyl alcohol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 8 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 8 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 3.2%, and open circuit voltage is 575mV, and short circuit current density is 7.896mAcm
-2, fill factor, curve factor is 0.71.
Embodiment 9
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.12g/mL with methyl alcohol
2,Ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 9 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 9 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 0.18%, and open circuit voltage is 456mV, and short circuit current density is 0.598mAcm
-2, fill factor, curve factor is 0.66.
Embodiment 10
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.2g/mL are that the molecular weight of 0.2g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.12g/mL with methyl alcohol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 10 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 10 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 0.18%, and open circuit voltage is 456mV, and short circuit current density is 0.598mAcm
-2, fill factor, curve factor is 0.66.
Embodiment 11
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1) and the mass concentration that add mass concentration and be 0.24g/mL are that the molecular weight of 0.16g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with methyl alcohol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 11 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 11 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 3.35%, and open circuit voltage is 631mV, and short circuit current density is 14.63mAcm
-2, fill factor, curve factor is 0.36.
Embodiment 12
The preparation of quasi-solid electrolyte: as organic solvent, gather (N-propyl group-4-vinylpridine) salt compounded of iodine (with the structure of embodiment 1), mass concentration of adding mass concentration and being 0.1g/mL are that the molecular weight of 0.3g/mL is 1000000 polyoxyethylene (with the structure of embodiment 1), the LiI of 0.15g/mL and the I of 0.04g/mL with methyl alcohol
2, ultrasonic at ambient temperature then concussion mixes, and forms quasi-solid electrolyte.
About the preparation of DSSC, present embodiment 12 adopts and prepares DSSC with embodiment 1 the same preparation method.
Photovoltaic performance test about DSSC: present embodiment 12 adopts the photovoltaic performance test of carrying out DSSC with embodiment 1 the same method of testing, the current density-voltage curve of measured battery.Photoelectric conversion efficiency is 3.68%, and open circuit voltage is 554mV, and short circuit current density is 12.70mAcm
-2, fill factor, curve factor is 0.52.
For the present invention, the present invention proposes and polyvinylpyridine salt compounded of iodine and polyoxyethylene are carried out composite, preparation is used for the quasi-solid electrolyte of DSSC.In view of the polyvinylpyridine salt compounded of iodine has stronger conductive capability and has and polyoxyethylated complete miscibility, thereby can form the stabilizing gel electrolyte.The compound that the present invention adopts is to solvent, light, thermally-stabilised and synthetic simple, and the quasi-solid electrolyte of formation is with low cost, stability is high.
In sum; Compared with prior art, a kind of quasi-solid electrolyte that is used for DSSC provided by the invention and preparation method thereof, the gel conductive capability that this quasi-solid electrolyte has is strong; Can strengthen the conductive capability of quasi-solid electrolyte; Reach the purpose that improves DSSC stability when stoping flow of solvent, help the production and the application of DSSC, and the preparation method's of this quasi-solid electrolyte process conditions are convenient and easy; Help applying on a large scale, be of great practical significance.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. a preparation method who is used for the quasi-solid electrolyte of DSSC is characterized in that, comprises step:
(1) polar organic solvent is put in the container;
(2) in container, add polyvinylpyridine salt compounded of iodine that mass concentration is 0.1 ~ 0.24g/mL, polyoxyethylene that mass concentration is 0.16 ~ 0.3g/mL, metal iodide that mass concentration is 0.15g/mL or imdazole derivatives salt compounded of iodine, iodine I
2, and make metal iodide or imdazole derivatives salt compounded of iodine and iodine I
2Mass ratio between 1.2 ~ 10;
(3) heat or carry out at ambient temperature ultrasonic concussion with 20 ~ 70 ℃ temperature and mix, make electrolyte gelization, finally form quasi-solid electrolyte.
2. preparation method as claimed in claim 1 is characterized in that, said polar organic solvent is methyl alcohol, ethanol and N, any one in the dinethylformamide or two or three.
3. preparation method as claimed in claim 1 is characterized in that, said polyoxyethylated molecular weight is between 100-5000000.
4. preparation method as claimed in claim 1 is characterized in that, said metal iodide be among lithium iodide LiI, sodium iodide NaI and the KI KI any one or two or three.
5. preparation method as claimed in claim 1; It is characterized in that; Said imdazole derivatives salt compounded of iodine is 1-methyl-3-ethyl imidazol(e) salt compounded of iodine, 1-methyl-3-propyl imidazole salt compounded of iodine, 1-methyl-3-butyl imidazole salt compounded of iodine, 1; 2-methyl-3-propyl imidazole salt compounded of iodine and 1, any one in 2-methyl-3-butyl imidazole salt compounded of iodine or two or three.
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| CN101418108A (en) * | 2008-09-28 | 2009-04-29 | 江苏双登电源有限公司 | Poly (N-alkyl-4-vinylpyridine) iodine solid polyelectrolyte, and preparation method and application thereof |
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