CN101604578B - Electrolyte composition - Google Patents
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- CN101604578B CN101604578B CN 200910159899 CN200910159899A CN101604578B CN 101604578 B CN101604578 B CN 101604578B CN 200910159899 CN200910159899 CN 200910159899 CN 200910159899 A CN200910159899 A CN 200910159899A CN 101604578 B CN101604578 B CN 101604578B
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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
- Y02E10/549—Organic PV cells
Abstract
The invention relates to an electrolyte composition. The electrolyte composition contains polyether polymer, polyoxyethylene and oxidation-reduction electric couple, and selectively contains nano particles.
Description
Technical field
The present invention relates to electrolyte composition, particularly be used for DSSC (dye sensitized solar cell, DSSC) in as the electrolyte composition of solid electrolyte.
Background technology
Solar energy is a kind of never exhausting and the free of contamination energy, therefore when solution pollution that traditional fossil energy faced and problem of shortage, always is one of considering of alternative energy source.Therefore, can be that the solar cell of electric energy just becomes present considerable research and subject of development with solar energy converting.
In recent years, owing to characteristics such as DSSC (DSSC) have light-permeable, deflection, processing procedure is simple and cheap, and have big effective light-receiving area, compared to crystal silicon solar batteries, it more can effectively utilize solar energy source.Generally speaking, the structure of DSSC comprises four partly, the electrolyte of semi-conducting material (as titanium dioxide), dye coating and the transporting holes of be respectively the moon/positive electrode that the electric current flow passage is provided, using as electric transmission.The material and the interface structure between the each several part of the each several part of above-mentioned dye-sensitized solar battery all can impact component efficiency.
Industry electrolyte commonly used is liquid at present, and right liquid electrolyte has the volatile shortcomings such as being difficult for encapsulation that reaches, and therefore less stable just has the development of colloidal state or solid electrolyte, to improve the not good problem of stability.But right solid electrolyte derives electrolyte to be difficult for infiltrating in the titanium dioxide and the low excessively shortcomings such as (＜1%) of light conversion efficiency.
Therefore, desire most ardently the solid electrolyte of seeking to improve the problems referred to above in the skill.
Summary of the invention
First purpose of the present invention provides a kind of electrolyte composition, and it comprises (a) polyethylene glycol oxide, (b) polyether type polymer and (c) oxidation-reduction pair.
Second purpose of the present invention provides a kind of electrolyte composition, and it comprises (a) polyethylene glycol oxide, (b) polyether type polymer and (c) oxidation-reduction pair, is used for the electrolyte composition of DSSC as solid electrolyte.
The invention effect
The present invention's electrolyte composition except can reaching the effect that battery encapsulates easily and stability is good, can provide higher light conversion efficiency again.
Embodiment
Electrolyte composition of the present invention comprises (a) polyethylene glycol oxide (polyethylene oxide; PEO), (b) polyether type polymer (polyether polymer) and (c) oxidation-reduction pair (redoxpair).
Polyethylene glycol oxide is a kind of linear crystalline polymer, and the big element of electronegativity such as aerobic can show polar bond (polar bonding) on the main chain, can help salt to dissociate.Ion by and polymer between produce ionic bond (ionic bonding) and form bond, this bond power belongs to primary valence bonding force (primary valance forces), this bond ability is reversible, therefore ion can produce mobile by the motion of polymer segment, but because of ion only can (O-) move on the segment and is limited in the polymer noncrystalline domain at the ether of high flexibility, therefore simple use polyethylene glycol oxide is as electrolytical base material, ions diffusion rate too low (cause electrical conductivity low), can't meet the industry demand, so the present invention mixes polyethylene glycol oxide as base material with polyether type polymer, utilize polyether type polymer that polyether base segment more is provided and destroy the arrangement of polyethylene glycol oxide rule, to reduce the formation of polyethylene glycol oxide crystallization, reach the purpose that improves ions diffusion rate (raising electrical conductivity).Electrolyte composition of the present invention contained (a) polyethylene glycol oxide is 0.2: 1 to 3: 1 with (b) weight ratio of polyether type polymer (a)/(b), is preferably 0.5: 1 to 2: 1, more preferably 0.7: 1 to 1.5: 1.When (a) polyethylene glycol oxide and (b) weight ratio of polyether type polymer (a)/(b) are lower than 0.2, the big constituent content of electronegativity is low, the salt ability drop of dissociating, electrical conductivity so step-down; When (a) polyethylene glycol oxide and (b) weight ratio of polyether type polymer (a)/(b) are higher than 3, easily form the polyethylene glycol oxide crystallization, and ion can't move in the polymer scale crystalline region, electrical conductivity also can so step-down.
Can be used for the polyethylene glycol oxide among the present invention, purity need reach more than 90%, and weight average molecular weight range is 500,000 to 8,000,000, and preferable weight-average molecular weight is 4,000, and 000 to 5,000, in 000 scope.The polyethylene glycol oxide that is used for the present invention can use commercially available product, for example: compatriots' health (product type: 50,100,200,400,600) that escapes.
In one embodiment, polyether type polymer used in the present invention is the EU (polyether urethane) with formula (I),
Wherein R is for replacing or unsubstituted C
6-14Aryl or replacement or unsubstituted C
3-6Cycloalkyl; N is 2 to 4 integer; M is 6 to 100 integer, is preferably 6 to 50 integer, more preferably 6 to 15 integer; And k is 2 to 4 integer.
As C
6-14Aryl for example can be enumerated: phenyl, naphthyl, xenyl, anthryl.Preferred phenyl, naphthyl, xenyl.Preferred especially phenyl.
As C
3-6Cycloalkyl for example can be enumerated: cyclopropyl, cyclobutyl, cyclopenta, cyclohexyl.Preferred cyclopropyl, cyclohexyl.Preferred especially cyclohexyl.
As replacing or unsubstituted C
6-14Substituting group in the aryl for example can be enumerated: C
1-6Alkyl is as methyl, ethyl, n-pro-pyl, isopropyl, normal-butyl, isobutyl group, sec-butyl, the tert-butyl group, n-pentyl, n-hexyl; Halogen is as fluorine, chlorine, bromine, iodine; C
1-6Alkoxyl is as methoxyl group, ethyoxyl, positive propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, n-pentyloxy, just own oxygen base; C
3-6Cycloalkyl is as cyclopropyl, cyclobutyl, cyclopenta, cyclohexyl; Hydroxyl; Carboxyl; Nitro; Cyano group; Or the like.Preferred C
1-6Alkyl, special preferable methyl.
As replacing or unsubstituted C
3-6Substituting group in the cycloalkyl for example can be enumerated: C
1-6Alkyl is as methyl, ethyl, n-pro-pyl, isopropyl, normal-butyl, isobutyl group, sec-butyl, the tert-butyl group, n-pentyl, n-hexyl; Halogen is as fluorine, chlorine, bromine, iodine; C
1-6Alkoxyl is as methoxyl group, ethyoxyl, positive propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, n-pentyloxy, just own oxygen base; C
6-14Aryl is as phenyl, naphthyl, xenyl, anthryl; Hydroxyl; Carboxyl; Nitro; Cyano group; Or the like.Preferred C
1-6Alkyl, special preferable methyl.
According to a preferred implementation, the R in the formula (I) is a tolyl, and k is 2, that is, and and polyether type polymer tool following formula (I
1) structure,
Wherein, n, m are as discussed previously.
According to a better implement mode, the R in the formula (I) is a tolyl, and n is 2, and m is 6 to 50 integer, and k is 2.
EU used in the present invention, can obtain by the technical field of the invention those of ordinary skill method known, for example can and contain the isocyanate-based compound polymerization through hydroxy-containing compounds, form an EU, employed hydroxy-containing compounds to the mol ratio that contains isocyanate-based compound between 0.8 to 4.0, preferably between 0.8 to 2.0, better between 0.8 to 1.5.
According to the present invention, containing isocyanate-based compound is the compound that comprises one or more NCOs, or comprises the mixture of the compound that contains different isocyanates radixes.The described isocyanate-based compound that contains is selected from the following group who forms: toluene di-isocyanate(TDI) (toluenediisocyanate; TDI), '-diphenylmethane diisocyanate (methylenediphenylenediisocyanate; MDI), IPDI (isophoronediisocyanate; IPDI), bicyclohexane methylene diisocyanate (dicyclohexanemethylene diisocyanate), XDI (xylene diisocyanate) and hydrogenated xylene diisocyanate (hydrogenated xylene diisocyanate).Preferred person is a toluene di-isocyanate(TDI).These contain isocyanate-based compound and may be used singly or two or more in combination.
Aforesaid hydroxy-containing compounds is the compound that comprises one or more hydroxyls, or comprises and for example be selected from the group who is made up of following by the mixture with different number hydroxy compounds: polyethylene glycol (polyethylene glycol; PEG), polypropylene glycol (polypropyleneglycol; PPG) and polytetramethylene glycol (polytetramethylene glycol; PTMG).Preferred person is a polyethylene glycol.These hydroxy-containing compounds may be used singly or two or more in combination.
In another specific embodiment, the polyether type polymer that can be used among the present invention is suc as formula the phosphorous polyethers shown in (II):
Wherein i is 2 to 4 integer; J is 6 to 100 integer, is preferably 6 to 50 integer, more preferably 6 to 15 integer.According to a better embodiment, the i in the formula (II) is 2, and j is 6 to 50 integer.
According to the present invention, above-mentioned phosphorous polyethers can form a phosphorous polyethers by a hydroxy-containing compounds and phosphorus oxychloride polymerization, and wherein employed hydroxy-containing compounds is between 0.8 to 3 to the mol ratio of phosphorus oxychloride, be preferably between 0.9 to 1.9, wherein hydroxy-containing compounds as previously mentioned.
There is no particular restriction to be applicable to the oxidation-reduction pair of DSSC, (Highest Occupied Molecular Orbital HOMO) is complementary and gets final product as long as redox energy level that oxidation-reduction pair produced can occupy electron orbit with dyestuff the highest.Chang Yong oxidation-reduction pair is I now
3 -/ I
-Also have many documents to propose the oxidation-reduction pair that other is applicable to DSSC, as by Wang Z S, Sayama K, Sugihara H. be in J.Phys.Chem.B, and 2005,109; Disclose with Br among the 2249-2245
-/ Br
2Oxidation-reduction pair as DSSC; By Bergeron B V, Marton A, Oskam G, et al. be in J.Phys.Chem.B, and 2005,109; Disclose with SCN among the 937-943
-/ (SCN)
2Oxidation-reduction pair as DSSC; By Oskam G, Bergeron B V, Meyer GJ, et al. is in J.Phy s.Chem.B, 2001,105; Disclose with SeCN among the 6867-6873
-/ (SeCN)
2Oxidation-reduction pair as DSSC.Therefore can be used as the oxidation-reduction pair of DSSC, such as but not limited to I
3 -/ I
-, Br
-/ Br
2, SCN
-/ (SCN)
2Or SeCN
-/ (SeCN)
2Wherein, because the diffusion rate of iodide ion is very fast, so I
3 -/ I
-For preferred oxidation-reduction pair is selected.
For electrolyte composition of the present invention, the content of oxidation-reduction pair depends on the demand of the product of wishing to get usually, with respect to polyether type polymer and polyethylene glycol oxide total weight 100 weight portions, oxidation-reduction pair is preferably 1 to 100 weight portion, more preferably 10 to 70 weight portions, further preferred 15 to 60 weight portions, preferred especially 20 to 55 weight portions, most preferably 30 to 50 weight portions.
In general, oxidation-reduction pair I
3 -/ I
-Can utilize iodide and I
2Through the proper proportion preparation, be dissolved in gained in the solvent, for example: concentration is the iodide of 0.01-5mol/L and the I of 0.01-5mol/L
2Be preferably the iodide of 0.01-3mol/L and the I of 0.01-1.5mol/L
2, the I of the iodide of 0.01-1mol/L and 0.01-1mol/L more preferably
2
Used iodide are to be selected from the group that imdazole derivatives salt compounded of iodine, quaternary ammonium salt compounded of iodine, metal iodide and their mixture are formed.
Used imdazole derivatives salt compounded of iodine is to be selected from the group that 1,2 dimethyl-3-propyl imidazole salt compounded of iodine, 1-methyl-3-butyl imidazole salt compounded of iodine, 1-methyl-3-propyl imidazole salt compounded of iodine, 1-methyl-3-ethyl imidazol(e) salt compounded of iodine, 1-methyl-3-methylimidazole salt compounded of iodine and their mixture are formed.
Used quaternary ammonium salt compounded of iodine is to be selected from the group that tetrabutylammonium iodide, tetrapropyl ammonium iodide, tetraethyl ammonium iodide, tetramethyl-ammonium iodide and their mixture are formed.
Used metal iodide is to be selected from LiI, NaI, KI, AlI
3, ZnI
2, CuI, CuI
2And the group of their mixture composition.
Described solvent is such as but not limited to oxolane, ethanol, acetone, diethyl ether, carrene, hexane, second eyeball, propionitrile, penta eyeball, methoxyacetonitrile, methoxypropionitrile, ethyl acetate, dimethyl carbonate, diethyl carbonate, diphenyl carbonate, methyl ethyl carbonate, ethylene carbonate, propylene carbonate, butylene carbonate, gamma-butyrolacton etc.These solvents may be used singly or two or more in combination.
For increasing electrical conductivity and intensity, electrolyte composition of the present invention can further add nano particle.By adding nano particle, can destroy the crystallinity of polyethylene glycol oxide, and increase amorphous zone, form the ion channel, therefore the electrical conductivity of the feasible solid electrolyte that obtains improves.On the other hand, also utilize the hardness of nano particle to increase the mechanical strength of the solid electrolyte of gained.The kind of nano particle used in the present invention there is no particular restriction, for example can be selected from the group who is made up of following: silicon dioxide, aluminium oxide, cadmium sulfide, zirconia, calcium phosphate, calcium oxide, titanium dioxide, zinc oxide and their mixture.Preferred person can select silicon dioxide, titanium dioxide or its mixture for use; Better person is a silicon dioxide.The content of described nano particle, in (a) polyethylene glycol oxide of electrolyte composition and (b) polyether type polymer add up to 100 weight portions, be 0.5 weight portion to 5 weight portion, be preferably 0.5 weight portion to 3 weight portion.Generally speaking, the particle diameter of nano particle is about 1 to 50 nanometer.
In addition, electrolyte composition of the present invention optionally adds any known additive, generally speaking, is to add in order to decorated nanometer particle relevant nature to improve the additive of battery efficiency.The group of the following composition of the optional freedom of typical additives: 4-tert .-butylpyridine (4-tert-butylpyridine; TBP), N-tolimidazole (N-methyl-benzimidazole; MBI), 1,2-dimethyl-3-propyl imidazole salt compounded of iodine (1,2-Dimethyl-3-Propylimidazolium Iodide; DMP II), lithium iodide (LiI) and sodium iodide (NaI).When lithium iodide that in electrolyte, adds small size or sodium iodide, lithium ion (Li
+) or sodium ion (Na
+) can be adsorbed on the surface of semi-conducting material (as titanium dioxide).Be adsorbed on the Li on surface this moment
+Can form Li with conduction band electron
+-e
-Because the Li on surface
+-e
-Both can move at titanium dioxide surface, also might break away from the titanium dioxide surface migration, therefore can shorten resistance and the distance that conduction band electron transmits between adjacent or non-conterminous titanium dioxide, improve the transmission of electronics, improve the short-circuit current density (J of solar cell at titanium dioxide surface
SC), but at the same time, Li
+-e
-With I in the electrolyte
3 -The speed of combination is also fast again, makes voltage (V
OC) reduce.In addition, by adding 4-tert .-butylpyridine, 1,2-dimethyl-3-propyl imidazole salt compounded of iodine or N-tolimidazole can improve minimum electron orbit (the Lowest Unoccupied MolecularOrbital that do not occupy of dyestuff, LUMO) and the Fermi level between the conduction band of titanium dioxide, increase the voltage of battery.Think the performance of considering each character of battery, can add a kind of, two or more additive.
The manufacture method of electrolyte composition of the present invention, for example utilize as previously defined polyethylene glycol oxide to mix as defined above polyether type polymer as the base material of electrolyte composition, add the oxidation-reduction system that can produce oxidation-reduction pair afterwards again, and optionally add nano particle and additive, mix, electrical conductivity that can obtain providing preferable and/or mechanical strength be used for the electrolyte composition of DSSC as solid electrolyte.
According to preferable embodiment of the present invention, the method for utilizing electrolyte composition of the present invention to make solid electrolyte in the solar cell may further comprise the steps:
(a) polyether type polymer is scattered in first solvent, forms first liquid;
(b) get polyethylene glycol oxide and be dissolved in second solvent, form second liquid;
(c) described first liquid is mixed with second liquid, form the 3rd liquid;
(d) adding can produce the oxidation-reduction system of oxidation-reduction pair (as LiI/I in gained the 3rd liquid
2), and optionally add nano particle and/or additive, and stir, form the 4th liquid; And
(e) the 4th liquid is slowly dripped to working electrode surface, and place a period of time, make solution slowly infiltrate into the semi-conducting material hole, to improve the transmission efficiency of electron hole, to be infiltrated fully after, carry out low temperature (20 ℃～50 ℃) drying again, remove residual solvent.
First solvent that can be used for step in the above-mentioned processing procedure (a) there is no particular restriction, the group of the following composition of its optional freedom: oxolane (tetrahydrafuran; THF), ethanol (ethanol), acetone (acetone), diethyl ether (diethyl ether), acetonitrile (acetonitrile), carrene (dichloromethane), hexane (hexane) and ethyl acetate (ethyl acetate).Be preferably oxolane.These solvents may be used singly or two or more in combination.
Second solvent that can be used for step in the above-mentioned processing procedure (b), the group of the following composition of optional freedom: oxolane, ethanol, acetone, diethyl ether, acetonitrile, carrene, hexane and ethyl acetate.Be preferably acetonitrile.These solvents may be used singly or two or more in combination.
The manufacture method of the work electrode of above-mentioned steps (e), for example comprise semi-conducting material (as titanium dioxide) coating is evenly coated surfaces of conductive substrates, form a film, under high temperature (400 ℃～600 ℃), carry out sintering, immerse afterwards in the dyestuff, to form work electrode (electrode).
Following examples are used for that the invention will be further described, in no case in order to limit the scope of the invention.It should be appreciated by those skilled in the art, under the situation that does not depart from technical conceive of the present invention and scope that claims are put down in writing, can carry out various modifications or change the present invention.
Embodiment
The preparation of polyether type polymer
1. EU:, remove the moisture in the polyethylene glycol with polyethylene glycol (Mw:400) heated baking.In the environment of nitrogen, add 1 mole of described polyethylene glycol behind the moisture and toluene di-isocyanate(TDI) of 1 mole removed gradually, in 80 ℃ of reactions two hours down, make twenty percent divide polymerization, can obtain an EU.
2. phosphorous polyethers:, behind the moisture in the removal polyethylene glycol, add phosphorus oxychloride (Phosphoryl chloride with the polyethylene glycol heated baking; POCl
3) (POCl
3: the mol ratio of PEG is 1: 2), in 60 ℃ of stirrings 1 hour, make twenty percent divide polymerization, can obtain a phosphorous polyethers.
Be used for the electrolyte composition of DSSC as solid electrolyte according to step manufacturing described below, composition such as the table 1 of each embodiment are listed.
The preparation of electrolyte composition:
1. make first liquid: get EU or phosphorous polyethers places sample bottle, add the 4ml oxolane and mix.
2. make second liquid: get polyethylene glycol oxide (Mw:4,000,000) and place sample bottle, add the 2ml acetonitrile, be stirred to dissolving fully.
3. first liquid and second liquid are mixed back formation the 3rd liquid.
4. with lithium iodide/iodine (LiI/I
2) be incorporated in the 3rd liquid, in extremely dissolving of stirring at room, and optionally add Nano particles of silicon dioxide (7nm) and/or additive, stir, form the 4th liquid.
The preparation of solar cell:
Titania slurry is coated in the electro-conductive glass of handling well, and (Solaronix company produces, model: TCO30-8), behind 500 ℃ of sintering, immerse by (the dyestuff commodity that N-719 produces for Solaronix company) in the dyestuff (N719), adsorb the work electrode that formed battery in 14-24 hour, the electrolyte composition that configuration is finished drips to working electrode surface, and place a period of time, make solution slowly permeate the back in drying at room temperature, cover platinum plating to electrode (counter electrode), with fixer or fluid sealant steady job electrode with to electrode.Insert 40 ℃ of baking ovens, and be evacuated to vacuum, after dry 24 hours, can be prepared into DSSC.
Battery performance test:
Draw lead respectively from the work electrode of battery with to electrode, receive on the battery performance test device,, luminous intensity is adjusted to 100mW/cm with sunlight simulator emulation sunlight
2, survey its battery performance, test result is as shown in table 2.
Table 1
Table 2
| Embodiment | Maximum power point current density, J mpp (mA/cm 2) | Maximum power point voltage Vmpp (mV) | Open circuit voltage Voc (mV) | Short-circuit current density Jsc (mA/cm 2) | Fill factor, curve factor FF | Light conversion efficiency (%) |
| 1 | 3.22 | 0.50 | 0.66 | 3.89 | 0.63 | 1.61 |
| 2 | 6.69 | 0.48 | 0.74 | 8.25 | 0.53 | 3.21 |
| 3 | 3.28 | 0.38 | 0.54 | 3.78 | 0.61 | 1.25 |
| 4 | 6.20 | 0.50 | 0.70 | 7.07 | 0.63 | 3.10 |
| 5 | 8.02 | 0.40 | 0.64 | 11.21 | 0.45 | 3.21 |
| 6 | 7.19 | 0.36 | 0.58 | 9.48 | 0.47 | 2.89 |
| 7 | 7.15 | 0.44 | 0.68 | 8.88 | 0.52 | 3.14 |
| 8 | 3.39 | 0.48 | 0.66 | 4.28 | 0.58 | 1.63 |
| 9 | 3.08 | 0.46 | 0.60 | 3.78 | 0.62 | 1.42 |
| 10 | 4.28 | 0.24 | 0.36 | 5.32 | 0.54 | 1.03 |
| 11 | 4.04 | 0.46 | 0.62 | 4.77 | 0.63 | 1.86 |
| 12 | 4.06 | 0.26 | 0.42 | 5.31 | 0.47 | 1.06 |
Claims (15)
1. electrolyte composition is characterized in that it comprises:
(a) polyethylene glycol oxide;
(b) polyether type polymer, described polyether type polymer are selected from the group of EU and phosphorous polyethers composition; Described EU has the structure of formula (I),
Wherein R is for replacing or unsubstituted C
6-14Aryl or replacement or unsubstituted C
3-6Cycloalkyl; N is 2 to 4 integer; M is 6 to 100 integer; And k is 2 to 4 integer;
Described phosphorous polyethers has the structure of formula (II),
Wherein, i is 2 to 4 integer; And j is 6 to 100 integer; And
(c) oxidation-reduction pair, described (c) oxidation-reduction pair is
, Br
-/ Br
2, SCN
-/ (SCN)
2Or SeCN
-/ (SeCN)
2
2. electrolyte composition as claimed in claim 1 is characterized in that k is 2, and described EU has formula (I
1) structure,
Wherein n is 2 to 4 integer; And m is 6 to 100 integer.
3. electrolyte composition as claimed in claim 2 is characterized in that m is 6 to 50 integer.
4. electrolyte composition as claimed in claim 2 is characterized in that n is 2.
5. electrolyte composition as claimed in claim 1 is characterized in that j is 6 to 50 integer.
6. electrolyte composition as claimed in claim 1, wherein, EU by hydroxy-containing compounds with contain the isocyanate-based compound polymerization and obtain, described hydroxy-containing compounds be 0.8-4.0 to the mol ratio that contains isocyanate-based compound.
7. as each described electrolyte composition among the claim 1-6, it is characterized in that further comprising nano particle.
8. electrolyte composition as claimed in claim 7 is characterized in that described nano particle is selected from the group of being made up of silicon dioxide, aluminium oxide, cadmium sulfide, zirconia, calcium phosphate, calcium oxide, titanium dioxide, zinc oxide and their mixture.
9. electrolyte composition as claimed in claim 8 is characterized in that described nano particle is silicon dioxide, titanium dioxide or its mixture.
10. electrolyte composition as claimed in claim 9 is characterized in that described nano particle is a silicon dioxide.
11. electrolyte composition as claimed in claim 7, the particle diameter that it is characterized in that described nano particle are 1 to 50 nanometer.
12. electrolyte composition as claimed in claim 1 is characterized in that (a) polyethylene glycol oxide and (b) weight ratio of polyether type polymer (a)/(b) are 0.2: 1 to 3: 1.
13. electrolyte composition as claimed in claim 1 is characterized in that (a) polyethylene glycol oxide and (b) weight ratio of polyether type polymer (a)/(b) are 0.5: 1 to 2: 1.
14. electrolyte composition as claimed in claim 1 is characterized in that described (c) oxidation-reduction pair is
15. as each described electrolyte composition of claim 1-14, it is used for DSSC.
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| CN101354967A (en) * | 2008-09-05 | 2009-01-28 | 浙江科技学院 | Quasi solid electrolyte for dye sensitization solar battery and preparation method thereof |
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| CN101354967A (en) * | 2008-09-05 | 2009-01-28 | 浙江科技学院 | Quasi solid electrolyte for dye sensitization solar battery and preparation method thereof |
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