CN101475213A - Preparation of lithiation nano titanium oxide and use thereof - Google Patents
Preparation of lithiation nano titanium oxide and use thereof Download PDFInfo
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- CN101475213A CN101475213A CNA2009100452671A CN200910045267A CN101475213A CN 101475213 A CN101475213 A CN 101475213A CN A2009100452671 A CNA2009100452671 A CN A2009100452671A CN 200910045267 A CN200910045267 A CN 200910045267A CN 101475213 A CN101475213 A CN 101475213A
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Abstract
The invention relates to a method for preparing lithiation nanometer titanium oxide applied to electrode material of dye-sensitized solar batteries. The method concretely comprises the processes of preparing one-dimensional nanometer titanium oxide in the environment of sodium hydroxide aqueous solution, adding lithium salt, mixing the one-dimensional nanometer titanium oxide with the lithium salt, performing hydrothermal treatment at a certain temperature, performing ablution to obtain anatase phase lithiation nanometer titanium oxide. The lithiation nanometer titanium oxide prepared by the method preserves a one-dimensional nanometer structure, has the advantages of good crystallinity, definite crystal form and the like, and optimizes the structure through the introduction of lithium ions. When the lithiation nanometer titanium oxide is taken as the electrode material and applied to dye-sensitized solar batteries, the photoelectric conversion efficiency of the batteries can be remarkably improved.
Description
Technical field
The present invention relates to a kind of preparation method and the application in the electrode materials of dye sensitization solar battery thereof of lithiation nano titanium oxide, belong to electrode of solar battery material preparation and Application Areas.
Background technology
At present, solar cell has been widely used in fields such as military field, space industry, industry, agricultural, commerce, household electrical appliance and public utility, and its cost is also very high, and therefore extensive use still is subjected to restriction economically.But because various countries are to the protection of environment with to the great demand of regeneration clean energy, solar cell will be to utilize the more practicable method of solar radiant energy, can be to utilize sun power to open vast vistas on a large scale human future.The no matter China or the world, shortage of resources and environmental protection are the difficult problem of puzzlement Economic development all the time.Along with the reinforcement of various countries' environmental consciousness, global solar battery industry demand presents the trend of rapid growth.Because improving photoelectric transformation efficiency and reducing cost is the key that solar cell moves towards practicability, and characteristics such as dye sensitization thin film of titanium oxide solar cell has that manufacture craft is simple, good stability, cost are low, non-environmental-pollution become the most promising alternative battery of silicon solar cell.
For the thin film of titanium oxide solar cell, wherein the titanium oxide porous-film is the key of entire cell, is determining the absorption of dyestuff and the transmission of electronics.Current multiple TiOx nano structure such as particle, line, rod, pipe, hollow ball etc. and the adulterated nano-titanium oxides such as metal ion such as zinc developed, hope is optimized the titanium oxide crystalline structure to improve electric transmission and to keep higher dye adsorption by means such as structure designs, and result of study shows that the enforcement of these measures has certain effect for promoting battery efficiency.Wherein, compare with the TiOx nano particle, TiOx nano rod, band, pipe with one-dimentional structure have excellent more electronic transmission performance and dye adsorption performance, can show battery performance preferably in the time of in being applied to thin-film solar cells.The bottleneck of restriction dye sensitization solar battery application is that its battery efficiency is not high at present, still has big gap from practical application, needs further on material structure and component nano-titanium oxide to be designed to improve its application performance.
Summary of the invention
At the problems referred to above, the object of the present invention is to provide a kind of preparation method of lithiation nano titanium oxide, mainly be to utilize hydrothermal method to be prepared, to overcome the deficiency (efficient is not high) of existing 1-dimention nano titanium oxide performance.Resulting lithiation nano titanium oxide had both kept one dimension Nano structure, have advantages such as crystallinity is good, crystal formation is determined again, and the structure of 1-dimention nano titanium oxide has been optimized in the introducing of lithium ion, when it is applied to dye sensitization solar battery as electrode materials, can effectively improve the photoelectric transformation efficiency of battery.
The present invention is realized by following technical scheme:
The step of this Hydrothermal Preparation lithiation nano titanium oxide is as follows:
(1) the TiOx nano particles dispersed is carried out hydro-thermal reaction in aqueous sodium hydroxide solution, obtain the 1-dimention nano titanium oxide after the washing drying treatment;
(2) take by weighing the 1-dimention nano titanium oxide of lithium salts and step (1) preparation by the certain mass ratio, lithium salts is dissolved in the deionized water, then the 1-dimention nano titanium oxide is scattered in the lithium salt solution;
(3) above-mentioned solution is carried out the nano-titanium oxide that hydro-thermal reaction can obtain lithiumation at a certain temperature.
The lithiation nano titanium oxide of the one-dimentional structure that obtains by above-mentioned steps is an anatase octahedrite phase oxidation titanium, and the photoelectric transformation efficiency of assembled battery device is compared remarkable enhancing with lithiumation titanium oxide not, the highlyest strengthens about 130%.
The lithiation nano titanium oxide of the present invention's preparation has advantages such as crystallinity is good, crystal formation is determined, during as the dye sensitization solar battery electrode material, battery table reveals good battery efficiency.
Description of drawings
Fig. 1 is the X ray diffracting spectrum of lithiation nano titanium oxide of the present invention;
Fig. 2 is the sem photograph of lithiation nano titanium oxide of the present invention.
Specific implementation method
Below in conjunction with accompanying drawing the present invention is described in detail, it will help to understand the present invention, but not limit content of the present invention.
Embodiment 1
Take by weighing 3 gram nano-titanium oxides and be scattered in 40 milliliters of aqueous sodium hydroxide solutions that concentration is 5 mol,, after washing, pickling and drying, obtain Powdered intermediate product 150 ℃ of following hydro-thermal reactions 12 hours.4% take by weighing lithium nitrate and above-mentioned gained intermediate product 1-dimention nano titanium oxide in molar ratio, lithium chloride is dissolved in 40 ml deionized water, then the 1-dimention nano titanium oxide is scattered in wherein.In autoclave,, can obtain lithiation nano titanium oxide after cleaning by deionized water in 150 ℃ of following hydro-thermal reactions 12 hours.Take by weighing 0.5 gram lithiation nano titanium oxide and add 5 milliliters of dehydrated alcohols, the sealing magnetic agitation adds 0.5 gram Macrogol 2000 0 after 24 hours, is warming up to 80 ℃ of continuation magnetic agitation and forms pasty slurry in 1 hour.By silk screen slurry is printed on the conductive glass (FTO) and makes film, be of a size of 0.5cm * 0.5cm, 450 ℃ of following thermal treatments 0.5 hour.Electrode film 80 ℃ of thermal treatments 15 minutes, is immersed in the ethanol solution of 5 * 10-4 mol ruthenium complexe N719 dyestuffs 24 hours subsequently, takes out the back and clean with ethanol and dries, be the thin film of titanium oxide electrode.With this thin film of titanium oxide electrode is the light anode, with platinized conductive glass is counter electrode, acetonitrile solution with lithium iodide, iodine, dimethyl-3-propyl imidazole iodine, 4-tert .-butylpyridine is an ionogen, and assembling obtains solar cell device, and photoelectric transformation efficiency is about 2.3%.
Embodiment 2
Take by weighing 3 gram nano-titanium oxides and be scattered in 40 milliliters of aqueous sodium hydroxide solutions that concentration is 10 mol,, after washing, pickling and drying, obtain Powdered intermediate product in 180 ℃ of hydro-thermal reactions 48 hours.6.6% take by weighing lithium chloride and above-mentioned products therefrom in molar ratio, lithium chloride is dissolved in 40 ml deionized water, then the 1-dimention nano titanium oxide is scattered in wherein.In autoclave, under 150 ℃, carried out hydro-thermal reaction 24 hours, by obtaining lithiation nano titanium oxide behind the deionized water wash.The photoelectric transformation efficiency that is assembled into battery device is about 3.2%.
Embodiment 3
Take by weighing 3 gram nano-titanium oxides and be scattered in 40 milliliters of aqueous sodium hydroxide solutions that concentration is 10 mol,, after washing, pickling and drying, obtain Powdered intermediate product in 180 ℃ of hydro-thermal reactions 72 hours.13.2% take by weighing lithium chloride and above-mentioned products therefrom in molar ratio, lithium chloride is dissolved in 40 ml deionized water, then the 1-dimention nano titanium oxide is scattered in wherein.In autoclave, under 180 ℃, carried out hydro-thermal reaction 24 hours, by obtaining lithiation nano titanium oxide behind the deionized water wash.Sample structure, pattern are respectively as depicted in figs. 1 and 2.The photoelectric transformation efficiency that is assembled into battery device is about 6.2%.
Embodiment 4
Take by weighing 3 gram nano-titanium oxides and be scattered in 40 milliliters of aqueous sodium hydroxide solutions that concentration is 15 mol,, after washing, pickling and drying, obtain Powdered intermediate product in 190 ℃ of hydro-thermal reactions 96 hours.400% take by weighing Lithium Sulphate and above-mentioned products therefrom in molar ratio, lithium chloride is dissolved in 40 ml deionized water, then the 1-dimention nano titanium oxide is scattered in wherein.In autoclave, under 200 ℃, carried out hydro-thermal reaction 72 hours, by obtaining lithiation nano titanium oxide behind the deionized water wash.The photoelectric transformation efficiency that is assembled into battery device is about 2.6%.
Claims (3)
1, a kind of preparation method of lithiation nano titanium oxide is characterized in that, comprises the steps:
(1) taking by weighing nano-titanium oxide is scattered in the aqueous sodium hydroxide solution that concentration is 5～15 mol, 150～200 ℃ of following hydro-thermal reactions 12～96 hours, product obtained comprising the intermediate product of 1-dimention nano titanium oxide respectively after washing and dilute hydrochloric acid solution clean dry;
(2) be 1～400% to take by weighing lithium salts and described intermediate product and be dissolved in the deionized water with mol ratio, in 150～200 ℃ of following hydro-thermal reactions 12～72 hours, product can obtain anatase octahedrite phase lithiation nano titanium oxide behind washing and drying in reactor.
2, preparation method according to claim 1 is characterized in that, described lithium salts is muriate, nitrate, the vitriol of lithium.
3, the application of the described lithiation nano titanium oxide of claim 1 is characterized in that, is applied to the electrode materials of dye sensitization solar battery.
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| CNA2009100452671A CN101475213A (en) | 2009-01-14 | 2009-01-14 | Preparation of lithiation nano titanium oxide and use thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715928A (en) * | 2015-02-15 | 2015-06-17 | 辽宁工业大学 | Preparing method for Li doped TiO2 nano-rod photo-anode |
| CN106744675A (en) * | 2017-01-22 | 2017-05-31 | 郑州大学 | A kind of nano material cutting off processing method |
| CN112635820A (en) * | 2020-12-18 | 2021-04-09 | 中国铝业股份有限公司 | Lithiation modified rod-like ceramic filler and its preparation method and application |
-
2009
- 2009-01-14 CN CNA2009100452671A patent/CN101475213A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715928A (en) * | 2015-02-15 | 2015-06-17 | 辽宁工业大学 | Preparing method for Li doped TiO2 nano-rod photo-anode |
| CN104715928B (en) * | 2015-02-15 | 2017-07-28 | 辽宁工业大学 | A kind of Li doping TiO2The preparation method of nanometer rods light anode |
| CN106744675A (en) * | 2017-01-22 | 2017-05-31 | 郑州大学 | A kind of nano material cutting off processing method |
| CN106744675B (en) * | 2017-01-22 | 2018-11-09 | 郑州大学 | A kind of nano material cutting off processing method |
| CN112635820A (en) * | 2020-12-18 | 2021-04-09 | 中国铝业股份有限公司 | Lithiation modified rod-like ceramic filler and its preparation method and application |
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Open date: 20090708 |