CN105513800B - A kind of preparation method of low cost used by dye sensitization solar battery quasi-solid electrolyte - Google Patents
A kind of preparation method of low cost used by dye sensitization solar battery quasi-solid electrolyte Download PDFInfo
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- CN105513800B CN105513800B CN201510997116.1A CN201510997116A CN105513800B CN 105513800 B CN105513800 B CN 105513800B CN 201510997116 A CN201510997116 A CN 201510997116A CN 105513800 B CN105513800 B CN 105513800B
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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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- Y02E10/542—Dye sensitized solar cells
Abstract
The invention discloses a kind of preparation methods of inexpensive used by dye sensitization solar battery quasi-solid electrolyte, comprise the following steps：(1) eutectic solvent is prepared：Hydrogen bond donor and hydrogen bond receptor are uniformly mixed, dried, obtains eutectic solvent；The hydrogen bond donor is urea or glycerine, and the hydrogen bond receptor is choline chloride or choline bromide；(2) quasi-solid electrolyte is prepared：It is first added in into N methyl pyrrolidones after agarose stirs evenly, adds I2Continue to stir evenly with LiI, be eventually adding eutectic solvent and be uniformly mixed and obtain the quasi-solid electrolyte.Solid-state subject to electrolyte, has larger ionic conductivity and stability made of the preparation method of the present invention；Introduced eutectic solvent cost is relatively low during the preparation method of the present invention, is readily synthesized, and has higher ionic conductivity, and application is so that optical device keeps higher photoelectric properties and photoelectric conversion efficiency in the opto-electronic device.
Description
Technical field
The invention belongs to field of dye-sensitized solar cells more particularly to it is a kind of low cost, based on eutectic solvent
Used by dye sensitization solar battery quasi-solid electrolyte preparation method.
Background technology
Dye-sensitized solar cells (DSSC) preparation process is simple, at low cost, have in large area industrial applications compared with
Big advantage is a kind of solar cell with wide application prospect；Its main composition part includes：Photosensitizer (dye
Material), electrolyte (contain oxidation-reduction pair), to electrode, electro-conductive glass and titanium dioxide photo anode；Wherein, electrolyte carries
The effect of transport charge is an important component of DSSC.
Electrolyte mainly includes：Oxidation-reduction pair (the I of good reversibility-/I3-), dissolving oxidation-reduction pair solvent and add
Add agent.It is divided into liquid electrolyte, quasi-solid electrolyte and solid electrolyte by existence.Liquid electrolyte has electrical conductivity height,
The advantages that ion diffusion velocity is fast, however traditional liquid electrolyte also due to its encapsulation is difficult, volatile, stability is poor, toxicity
The shortcomings of big, influences it extensively using (Tennakone K, Perera V P S, Kottegota I R M, et al.J Phys
D:Appl Phys,1999,32(4):374-379), and the diffusion velocity of solid electrolyte intermediate ion is slower；Electrical conductivity is relatively low.
It is most efficient method thus to develop quasi- solid gel electrolyte.The Chinese patent application of Publication No. CN103489645A discloses
A kind of used by dye sensitization solar battery gel electrolyte and preparation method thereof, by functional form graphene, ionomerIonic liquidUncle
Butyl-pyridinium and double trifluoromethanesulfonic acid amides are mixed in a certain ratio preparation, and gained electrolyte gel ability is strong, is easy to encapsulate, institute
The dye-sensitized cell of preparation also has high electricity conversion.But ionic liquid synthesis is difficult used by this method,
Cost is higher.The Chinese patent application of Publication No. CN101635200A discloses a kind of dye-sensitized solar cell electrolyte
And preparation method thereof：By non-polymeric ionic liquid
Aggretion type ionic liquid ( In one kind), ionic liquid crosslinking agentAnd initiator
(benzoin ethyl ether, In one
Kind) Quasi-solid-state polymer gel electrolyte is prepared by in-situ polymerization after mixing, the electrolyte prepared by this method has
Good adhesive property is easy to encapsulate；But further improved using the photoelectric conversion efficiency needs of the battery of the electrolyte, it makes
Preparation Method is also complex.
As known from the above, ionic liquid (imidazoles, sulfonium class, pyridines and guanidine salt class) is the one of quasi-solid electrolyte
Common component, plays the great function for increasing cell photoelectric performance, but due to its complicated synthesis mode and high
Cost limit the application of ionic liquid in the opto-electronic device, such as common 1,3- methylimidazoles salt compounded of iodine (CAS 4333-
62-4) the product still price in lark prestige official website inexpensively is $656/5g.Therefore, research and develop it is a kind of low cost, be easy to close
Into quasi solid electrolyte, and the cell photoelectric transfer efficiency using the electrolyte can be improved again, be necessary.
The content of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of being readily synthesized, inexpensive
The preparation method of used by dye sensitization solar battery quasi-solid electrolyte.
In order to solve the above technical problems, technical solution proposed by the present invention is：
A kind of preparation method of low cost used by dye sensitization solar battery quasi-solid electrolyte, comprises the following steps：
(1) eutectic solvent is prepared：Hydrogen bond donor and hydrogen bond receptor are uniformly mixed, dried, obtains eutectic solvent；Institute
Hydrogen bond donor is stated as urea (CO (NH2)2) or glycerine (C3H803), the hydrogen bond receptor is choline chloride (HOCH2CH2N(CH3)3) or choline bromide (HOCH Cl2CH2N(CH3)3Cl)；
(2) quasi-solid electrolyte is prepared：It is first added in into N-Methyl pyrrolidone (NMP) after agarose stirs evenly, then
Add in I2Continue to stir evenly with LiI, be eventually adding step (1) preparation eutectic solvent be uniformly mixed obtain it is described accurate solid
State electrolyte.
Above-mentioned preparation method, it is preferred that the molar ratio of the hydrogen bond donor and the hydrogen bond receptor is 2~2.5:1.Institute
It states hydrogen bond donor and passes through abundant drying and dehydrating with the hydrogen bond receptor.
Above-mentioned preparation method, it is preferred that in the step (2), the addition of eutectic solvent accounts for quasi-solid electrolyte
Mass fraction be 10wt.%~80wt.%.
Above-mentioned preparation method, it is preferred that the addition of the agarose for N-Methyl pyrrolidone 2wt.%~
3.5wt.%；The I2Addition be N-Methyl pyrrolidone 1.2wt.%~1.4wt.%；LiI and I2Molar ratio be 1
~1.5:1.
Above-mentioned preparation method, it is preferred that in the step (1), the specific preparation process of eutectic solvent is：By hydrogen bond
2~2.5h is stirred under 80~90 DEG C of water-baths after donor and hydrogen bond receptor mixing, obtains the liquid of water white transparency then by the nothing
The transparent liquid vacuum drying 16 of color~for 24 hours to get to eutectic solvent.
Above-mentioned preparation method, it is preferred that in the step (2), the specific preparation process of quasi-solid electrolyte is：To N-
Agarose is added in methyl pyrrolidone, 80~90 DEG C of waters bath with thermostatic control stop water-bath after stirring 4~4.5h, add I2And LiI,
4~5h is stirred to uniform, is eventually adding eutectic solvent, continues 4~4.5h of stirring to being uniformly mixed to get to electrolyte.Into
One step, I2, LiI analyzes pure with agarose use.
Applicant by the study found that the eutectic solvent that is formed of hydrogen bond receptor and hydrogen bond donor also it is a kind of from
Sub- liquid, applicant also have found that the eutectic solvent for being mixed to form hydrogen bond receptor and hydrogen bond donor has low steam by studying
The advantages that pressure, wide chemical window, high thermal stability and high conductivity, while the eutectic solvent is compared to other species ions
Also there is liquid advantages, the eutectic solvents provided by lark prestige official website such as synthesis is simple, is easily recycled, is of low cost to synthesize
Presoma price shows that urea is $141/kg, Lv Huadanjian $2.4/g, well below the price of other ionic liquids.Application
Such eutectic solvent ionic liquid is replaced the ionic liquid of expensive traditional and is successfully applied to photoelectric device by people, is dropped significantly
The low cost of photoelectric device.
The present invention is by adding suitable eutectic solvent (hydrogen bond receptor and hydrogen bond into agarose base polymer electrolyte
Donor), hydrogen bond donor, hydrogen bond receptor directly interact with agarose, increase the network cross-linked structure of electrolyte system, for electricity
The intermediate ion transmission of solution matter provides effective carrier transport passage, is finally reached the ionic conductivity for improving electrolyte, enhancing
The purpose of the photoelectric properties of solar device.
Compared with prior art, the advantage of the invention is that：
Solid-state subject to electrolyte, has larger ionic conductivity and stability made of the preparation method of the present invention；It is accurate
Solid electrolyte is attached on device after being polymerized to electrolyte into solid film, therefore leakage problems are not present during use；
Compared to liquid electrolyte, introduced eutectic solvent cost is relatively low during preparation method of the invention, is readily synthesized, tool
There is higher ionic conductivity, the photoelectric properties and opto-electronic conversion effect that application causes optical device holding higher in the opto-electronic device
Rate.
Specific embodiment
For the ease of understanding the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But protection scope of the present invention is not limited to embodiment in detail below.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection domain.
Except there is a special instruction, the various reagents used in the present invention, raw material be can be commercially commodity or
Person can pass through product made from well known method.
Embodiment 1：
A kind of preparation method of the inexpensive used by dye sensitization solar battery quasi-solid electrolyte of the present invention, including following
Step：
(1) preparation of eutectic solvent：Weigh at room temperature by abundant drying and dehydrating 12.000g solid ureas and
13.950g solid choline chlorides are put into brown bottle, are placed in heating stirring 2h in 80 DEG C of water-baths, until being fully converted to colourless
Transparency liquid.It takes out, is taken out after being statically placed in vacuum drying chamber dry 16h, be eutectic solvent.
(2) preparation of electrolyte：20.45gNMP is taken, is put into 60mL brown bottles, 0.4301g agaroses are added in, at 80 DEG C
After stirring 4h under conditions of heating water bath, brown bottle is taken out, adds in 0.2782gI2With 0.1261gLiI, 4.3h is stirred at room temperature,
After the completion of stirring, the eutectic solvent of 2.62g steps (1) preparation is taken, is added in brown bottle, continues to stir 4h at room temperature, obtain
Quasi-solid electrolyte.
(3) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into dissolved with 0.4 × 10-3The anhydrous second of mol/LN719 dyestuffs
In alcoholic solution, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(4) preparation of battery device：The dyestuff prepared in step (3) is added dropwise in quasi-solid electrolyte prepared by step (2)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in the present embodiment step (2)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 4.32 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by the present embodiment：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 1.73%.
Embodiment 2：
A kind of preparation method of the inexpensive used by dye sensitization solar battery quasi-solid electrolyte of the present invention, including following
Step：
(1) preparation of eutectic solvent：The solid urea 12.000g and solid by abundant drying and dehydrating are weighed at room temperature
Choline chloride 13.530g is put into brown bottle, is placed in heating stirring 2.2h in 82 DEG C of water-baths, until being fully converted to colourless
Prescribed liquid.It takes out, is taken out after being statically placed in vacuum drying chamber dry 18h, be eutectic solvent.
(2) preparation of electrolyte：20.45gNMP is taken to be put into 60mL brown bottles, 0.5153g agaroses are added in, at 82 DEG C
After stirring 4.2h under conditions of heating water bath, brown bottle is taken out, adds in 0.2563gI2With 0.1231gLiI, stir at room temperature
4.7h after the completion of stirring, takes the eutectic solvent of 4.11g steps (1) preparation, adds in brown bottle, continue to stir at room temperature
4.2h obtains quasi-solid electrolyte.
(3) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(4) preparation of battery device：The dyestuff prepared in step (3) is added dropwise in quasi-solid electrolyte prepared by step (2)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in the present embodiment step (2)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 7.36 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by the present embodiment：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 2.81%.
Embodiment 3：
A kind of preparation method of the inexpensive used by dye sensitization solar battery quasi-solid electrolyte of the present invention, including following
Step：
(1) preparation of eutectic solvent：The solid urea 12.000g and solid by abundant drying and dehydrating are weighed at room temperature
Choline chloride 13.000g is put into brown bottle, is placed in heating stirring 2.4h in 84 DEG C of water-baths, until being fully converted to colourless
Prescribed liquid.It takes out, is taken out after being statically placed in vacuum drying chamber dry 20h, be eutectic solvent.
(2) preparation of electrolyte：20.45gNMP is taken to be put into 60mL brown bottles, 0.6045g agaroses are added in, at 85 DEG C
After stirring 4.3h under conditions of heating water bath, brown bottle is taken out, adds in 0.2802gI2With 0.1398gLiI, 5h is stirred at room temperature,
After the completion of stirring, the eutectic solvent of 12.27g steps (1) preparation is taken, is added in brown bottle, continues to stir 4.4h at room temperature, obtain
To quasi-solid electrolyte.
(3) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(4) preparation of battery device：The dyestuff prepared in step (3) is added dropwise in quasi-solid electrolyte prepared by step (2)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in the present embodiment step (2)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 5.11 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by the present embodiment：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 2.01%.
Embodiment 4：
A kind of preparation method of the inexpensive used by dye sensitization solar battery quasi-solid electrolyte of the present invention, including following
Step：
(1) preparation of eutectic solvent：The solid urea 12.000g and solid by abundant drying and dehydrating are weighed at room temperature
Choline chloride 12.982g is put into brown bottle, is placed in heating stirring 2.5h in 87 DEG C of water-baths, until being fully converted to colourless
Prescribed liquid.It takes out, is taken out after being statically placed in vacuum drying chamber dry 21h, be eutectic solvent.
(2) preparation of electrolyte：20.45gNMP is taken to be put into 60mL brown bottles, 0.7011g agaroses are added in, at 87 DEG C
After stirring 4.4h under conditions of heating water bath, brown bottle is taken out, adds in 0.2852gI2With 0.1413gLiI, 5h is stirred at room temperature,
After the completion of stirring, the eutectic solvent of 16.15g steps (1) preparation is taken, is added in brown bottle, continues to stir 4.5h at room temperature, obtain
To quasi-solid electrolyte.
(3) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(4) preparation of battery device：The dyestuff prepared in step (3) is added dropwise in quasi-solid electrolyte prepared by step (2)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in the present embodiment step (2)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 4.35 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by the present embodiment：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 1.55%.
Embodiment 5：
A kind of preparation method of the inexpensive used by dye sensitization solar battery quasi-solid electrolyte of the present invention, including following
Step：
(1) preparation of eutectic solvent：The solid urea 12.000g and solid by abundant drying and dehydrating are weighed at room temperature
Choline chloride 12.523g is put into brown bottle, is placed in heating stirring 2.2h in 90 DEG C of water-baths, until being fully converted to colourless
Prescribed liquid.It takes out, is statically placed in drying in vacuum drying chamber and takes out afterwards for 24 hours, be eutectic solvent.
(2) preparation of electrolyte：20.45gNMP is taken to be put into 60mL brown bottles, 0.5153g agaroses are added in, at 90 DEG C
After stirring 4.5h under conditions of heating water bath, brown bottle is taken out, adds in 0.2563gI2With 0.1231gLiI, stir at room temperature
4.7h after the completion of stirring, takes the eutectic solvent of 4.11g steps (1) preparation, adds in brown bottle, continue to stir at room temperature
4.2h obtains quasi-solid electrolyte.
(3) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(4) preparation of battery device：The dyestuff prepared in step (3) is added dropwise in quasi-solid electrolyte prepared by step (2)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in the present embodiment step (2)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 4.36 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by the present embodiment：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), measure quasi- solid-state dye
Sensitization solar battery, effective illuminating area are 0.25cm2Photoelectric conversion efficiency be 1.66%.
Comparative example 1：
The preparation method of the used by dye sensitization solar battery quasi-solid electrolyte of this comparative example, comprises the following steps：
(1) preparation of electrolyte：20.25gNMP is taken to be put into 60mL brown bottles, 0.4133g agaroses are added in, at 80 DEG C
After stirring 4h under conditions of heating water bath, brown bottle is taken out, adds in 0.2982gI2With 0.1261gLiI, 4h is stirred at room temperature, then
1,3- methylimidazole iodine is added in, obtains the quasi-solid electrolyte of agar glycosyl.
(2) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(3) preparation of battery device：The dyestuff prepared in step (2) is added dropwise in quasi-solid electrolyte prepared by step (1)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in this comparative example step (1)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 2.89 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by this comparative example：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 1.25%.
It was found from comparative example 1 and embodiment 1-5, by the addition of eutectic solvent so that the quasi-solid-state dye sensitized sun
The photoelectric efficiency of energy battery is at least increased to 1.55% by 1.25%, and electrical conductivity is also by 2.89 × 10-3S/cm rises at least to
4.32×10-3S/cm.When mass fraction shared by eutectic solvent is 20wt.%, ideal electrolytic conductivity is obtained
It is respectively 7.36 × 10 with photoelectric efficiency-3S/cm and 2.81%.
Comparative example 2：
The preparation method of the used by dye sensitization solar battery quasi-solid electrolyte of this comparative example, comprises the following steps：
(1) preparation of electrolyte：20.25gNMP is taken to be put into 60mL brown bottles, 0.4133g agaroses are added in, at 80 DEG C
After stirring 4h under conditions of heating water bath, brown bottle is taken out, adds in 0.2982gI2With 0.1261gLiI, 4h is stirred at room temperature, is added
Enter 1, the 3- methylimidazole iodine that mass fraction is 20wt.%, obtain the quasi-solid electrolyte of agar glycosyl.
(2) light anode is prepared and is sensitized：Using knife coating procedure by TiO2Slurry (solid-liquid mass ratio 1:7) coated on conductive glass
Glass surface is allowed to form a film, and after 500 DEG C are heat-treated 35 minutes, is put into 0.4 × 10-3The N719 dyestuff ethanol solutions of mol/L
In, 12h is sensitized at room temperature, obtains the TiO of dye sensitization2Light anode.
(3) preparation of battery device：The dyestuff prepared in step (2) is added dropwise in quasi-solid electrolyte prepared by step (1)
The TiO of sensitization2It in light anode, is put into vacuum drying chamber, is warming up to 80 DEG C, keep the temperature 1h so that quasi-solid electrolyte is contracted to
It is thick, along with to electrode, continuing to toast 1h at 85 DEG C, quasi-solid-state dye sensitized solar cell be made.
Test the performance of gained quasi-solid electrolyte in this comparative example step (1)：Under room temperature environment, use platinum electrode for
Electrode is tested, the electrical conductivity for measuring electrolyte is 3.21 × 10-3S/cm。
Test the performance of the quasi-solid-state dye sensitized solar cell obtained by this comparative example：In room temperature environment, xenon is used
Lamp simulated solar irradiation, light intensity 80mW/cm2(light intensity：Under the conditions of being demarcated using silicon photoelectric diode), it is quick to measure quasi- solid-state dye
Change solar cell, effective illuminating area is 0.25cm2Photoelectric conversion efficiency be 1.47%.
From comparative example 2 it was found from compared with embodiment 1-5, if eutectic solvent is changed to 1 of price costly,
3- methylimidazole iodine, the photoelectric efficiency of gained dye-sensitized solar cells is only 1.47%, electrolytic conductivity 3.21
×10-3S/cm, and the electrolytic conductivity of the present invention has at least also reached 4.35 × 10-3S/cm, cell photoelectric efficiency are
1.55% (embodiment 5), even, the electrical conductivity of electrolyte of the invention can reach 7.36 × 10-3S/cm, photoelectric conversion efficiency energy
Reach 2.81% (see embodiment 2).Thus, quasi-solid electrolyte of the invention is not only at low cost, and synthetic method is simple, using this
The photoelectric properties of the dye-sensitized solar cells of quasi-solid electrolyte are also greatly improved.
To sum up, the synthetic method of used by dye sensitization solar battery quasi-solid electrolyte of the invention is simple, raw material sources
Extensively, it is of low cost.Using the quasi-solid-state dye sensitized solar cell prepared by this method, the electrical conductivity of electrolyte and infiltration
Property all improves, and finally improves the photoelectric efficiency of quasi-solid-state dye sensitized solar cell.
Claims (3)
1. a kind of preparation method of low cost used by dye sensitization solar battery quasi-solid electrolyte, which is characterized in that including with
Lower step：
(1) eutectic solvent is prepared：Hydrogen bond donor and hydrogen bond receptor are uniformly mixed, dried, obtains eutectic solvent；The hydrogen
Key donor is urea or glycerine, and the hydrogen bond receptor is choline chloride or choline bromide；The specific preparation process of eutectic solvent
For：Will hydrogen bond donor and hydrogen bond receptor mix after 2~2.5h is stirred under 80~90 DEG C of water-baths, be then dried in vacuo 16~for 24 hours,
Obtain eutectic solvent；The molar ratio of the hydrogen bond donor and the hydrogen bond receptor is 2~2.5:1；
(2) quasi-solid electrolyte is prepared：It is first added in into N-Methyl pyrrolidone after agarose stirs evenly, adds I2And LiI
Continue to stir evenly, the eutectic solvent for being eventually adding step (1) preparation is uniformly mixed and obtains the quasi-solid electrolyte；Its
In, the addition of eutectic solvent accounts for the mass fraction of quasi-solid electrolyte as 10wt.%~80wt.%.
2. preparation method as described in claim 1, which is characterized in that the addition of the agarose is N-Methyl pyrrolidone
2wt.%~3.5wt.%；The I2Addition be N-Methyl pyrrolidone 1.2wt.%~1.4wt.%；LiI and I2
Molar ratio be 1~1.5:1.
3. preparation method as described in claim 1, which is characterized in that in the step (2), the specific system of quasi-solid electrolyte
It is for process：Agarose is added in into N-Methyl pyrrolidone, 80~90 DEG C of waters bath with thermostatic control stop water-bath after stirring 4~4.5h,
Add I2And LiI, 4~5h is to uniform for stirring, is eventually adding eutectic solvent, continues 4~4.5h of stirring to being uniformly mixed, i.e.,
Obtain quasi-solid electrolyte.
Priority Applications (1)
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| A novel deep eutectic solvent-based ionic liquid used as electrolyte for dye-sensitized solar cells;Huei-Ru Jhong等;《Electrochemistry Communications》;20081109;第11卷;第209-211页 * |
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