CN105390292A - Preparation method of H-TiO2 dye sensitization solar cell light anode - Google Patents
Preparation method of H-TiO2 dye sensitization solar cell light anode Download PDFInfo
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- CN105390292A CN105390292A CN201510945451.7A CN201510945451A CN105390292A CN 105390292 A CN105390292 A CN 105390292A CN 201510945451 A CN201510945451 A CN 201510945451A CN 105390292 A CN105390292 A CN 105390292A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
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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
- Y02E10/542—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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a preparation method of an H-TiO2 dye sensitization solar cell light anode. The invention aims to solve the problems that the battery performance is reduced due to serious interface recombination by taking a hydrogenated titanium dioxide material as a dye sensitization solar cell light anode material, and the energy utilization of a near-infrared light region by the dye sensitization solar cell prepared by the prior art is less and the battery efficiency is low. The preparation method comprises the following steps: step 1, preparing the H-TiO2; step 2, preparing an H-TiO2 light anode slurry; and step 3, preparing the light anode. According to the preparation method of the H-TiO2 dye sensitization solar cell light anode provided by the invention, an H-TiO2 powder is used as a light anode material and used for preparing dye sensitization solar cells.
Description
Technical field
The present invention relates to a kind of H-TiO
2the preparation method of dye-sensitized solar cell anode.
Background technology
Hybrid inorganic-organic perovskite (abbreviation perovskite) solar cell of rising in recent years is because having the advantages such as photovoltaic energy conversion efficiency is high, preparation technology is simple, cause the extensive concern of academia and industrial circle, there is vast potential for future development. wherein planar heterojunction perovskite solar cell is simple because having structure, can the plurality of advantages such as low-temperature growth, becoming an important directions of research at present. the Energy harvesting of perovskite solar cell to near-infrared region is few, the absorption spectrum of battery is not mated with solar spectrum, limits the lifting of battery efficiency.
Hydrogenation titanium dioxide can utilize visible and near infrared light, and energy gap narrows, and has the higher density of donors, and this makes it have to be applicable to the possibility of perovskite solar cell.By preparing hydrogenation titanium dioxide to the process of titanium dioxide hyperbaric heating, this simple method efficiently has extensive use.The hydrogenation titanium dioxide of this preparation is used for perovskite solar cell and obtains higher photoelectric conversion efficiency and short-circuit current density.But the preparation process of hydrogenation titanium dioxide always needs appropriate hydro-reduction, the easy compound of the titanium dioxide poorly conductive of over-hydrogenation, electronics, photoelectric current can sharply reduce, and the photoelectric conversion efficiency of battery is obviously reduced.
Summary of the invention
The present invention is few to near-infrared region Energy harvesting in order to solve the DSSC that battery performance declines and prepared by prior art that hydrogenation titanic oxide material causes as the Interface composites that dye-sensitized solar cell anode material is serious, the problem that battery efficiency is low, and provide a kind of H-TiO
2the preparation method of dye-sensitized solar cell anode.
A kind of H-TiO
2the preparation method of dye-sensitized solar cell anode specifically carries out according to the following steps:
One, titanic oxide nano powder is positioned in quartz boat, the quartz boat filling titanic oxide nano powder is placed in the autoclave being full of hydrogen and reacts, then with the heating rate of 1 DEG C/min by reaction temperature from room temperature to 300 DEG C ~ 600 DEG C, after 300 DEG C ~ 600 DEG C insulation 3h ~ 8h, transfer to after leaving standstill 1h ~ 5h in vacuum drying chamber, be cooled to room temperature, obtain H-TiO
2powder; Described titanic oxide nano powder adopts sol gel synthesis to be prepared from;
Two, by H-TiO
2powder, ethyl cellulose, terpinol and ethanol mix, and stir and obtain slurry, using 250 order silk screens as basis material, basis material prints 6 slurries, obtains the H-TiO of six layers
2film, then to the H-TiO of six layers
2film heats from room temperature to 200 DEG C ~ 600 DEG C with the heating rate of 1 DEG C/min, is be incubated 0.1h ~ 1h under the condition of 200 DEG C ~ 600 DEG C, obtains H-TiO in temperature
2dye-sensitized solar cell anode; Described H-TiO
2the mass ratio of powder and ethyl cellulose is 1:(0.1 ~ 0.5); Described H-TiO
2the mass ratio of powder and terpinol is 1:(2 ~ 7); Described H-TiO
2the mass ratio of powder and ethanol is 1:(2 ~ 5).
A kind of H-TiO
2the application of dye-sensitized solar cell anode is by H-TiO
2dye-sensitized solar cell anode as anode for the preparation of DSSC.
Beneficial effect of the present invention:
Adopt H-TiO of the present invention
2dSSC prepared by dye-sensitized solar cell anode, compared with the DSSC formed with traditional dye sensitization light anode, the DSSC of this smooth anode composition has following advantage:
TiO
2nano-powder forms H-TiO after high pressure hydrogen process
2nano-powder, is introduced the oxygen vacancy concentration of nano-material surface, adds the density of donors of nano-powder, reduce the energy gap of powder by appropriateness; This nano-powder extends the life-span of light induced electron simultaneously, is conducive to the raising of battery performance.H-TiO
2the dye-sensitized solar cell anode of nano-powder enhances the utilization to incident light, improves the capture rate of battery to sunlight.H-TiO
2the light anode cell of nano-powder can suppress the recombination reaction of photo-generated carrier, extends carrier lifetime in battery, reduces dark current, is conducive to improving battery efficiency.H-TiO
2the light anode cell of nano-powder can extend the recombination time of electronics, accelerates the transmission of electronics, improves the photoelectric conversion efficiency of battery.Based on above characteristic, based on H-TiO
2the battery efficiency of the light anode DSSC of nano-powder brings up to 7.6% by 6.0%, and photoelectric current improves 26.7%.
Accompanying drawing explanation
Fig. 1 is the H-TiO that embodiment one step one obtains
2the stereoscan photograph of powder;
The H-TiO that Fig. 2 obtains for the titanic oxide nano powder described in embodiment two and embodiment one step one
2the ultraviolet-visible absorption spectra figure of powder, wherein 1 is the titanic oxide nano powder described in embodiment two, and 2 is the H-TiO that embodiment one step one obtains
2powder;
The H-TiO that Fig. 3 obtains for the titanic oxide nano powder described in embodiment two and embodiment one step one
2mo Te-Xiao Tuo the base curves of powder, wherein 1 is the titanic oxide nano powder described in embodiment two, and 2 is the H-TiO that embodiment one step one obtains
2powder;
Fig. 4 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode is at the short circuit current of simulating under 1.5G sunlight and open circuit voltage curve, and wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode;
Fig. 5 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the AC impedance spectrogram of light anode cell under illumination condition prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode;
Fig. 6 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the open circuit voltage attenuation curve of light anode cell prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode;
Fig. 7 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the electricity conversion of light anode cell under simulation 1.5G sunlight prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode.
Embodiment
Embodiment one: a kind of H-TiO of present embodiment
2the preparation method of dye-sensitized solar cell anode specifically carries out according to the following steps:
One, titanic oxide nano powder is positioned in quartz boat, the quartz boat filling titanic oxide nano powder is placed in the autoclave being full of hydrogen and reacts, then with the heating rate of 1 DEG C/min by reaction temperature from room temperature to 300 DEG C ~ 600 DEG C, after 300 DEG C ~ 600 DEG C insulation 3h ~ 8h, transfer to after leaving standstill 1h ~ 5h in vacuum drying chamber, be cooled to room temperature, obtain H-TiO
2powder; Described titanic oxide nano powder adopts sol gel synthesis to be prepared from;
Two, by H-TiO
2powder, ethyl cellulose, terpinol and ethanol mix, and stir and obtain slurry, using 250 order silk screens as basis material, basis material prints 6 slurries, obtains the H-TiO of six layers
2film, then to the H-TiO of six layers
2film heats from room temperature to 200 DEG C ~ 600 DEG C with the heating rate of 1 DEG C/min, is be incubated 0.1h ~ 1h under the condition of 200 DEG C ~ 600 DEG C, obtains H-TiO in temperature
2dye-sensitized solar cell anode; Described H-TiO
2the mass ratio of powder and ethyl cellulose is 1:(0.1 ~ 0.5); Described H-TiO
2the mass ratio of powder and terpinol is 1:(2 ~ 7); Described H-TiO
2the mass ratio of powder and ethanol is 1:(2 ~ 5).
Embodiment two: present embodiment and embodiment one unlike: be incubated 5h at 400 DEG C described in step one.Other steps and parameter identical with embodiment one.
Embodiment three: present embodiment and embodiment one or two unlike: be incubated 4h at 500 DEG C described in step one.Other steps and parameter identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three unlike: be heating for dissolving 20min under the condition of 90 DEG C in temperature in step one.Other steps and parameter identical with one of embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to four unlike: be incubated 0.5h under the condition of 500 DEG C in temperature in step 2.Other steps and parameter identical with one of embodiment one to four.
Embodiment six: one of present embodiment and embodiment one to five are unlike H-TiO described in step 2
2the mass ratio of powder and ethyl cellulose is 1:0.3.Other steps and parameter identical with one of embodiment one to five.
Embodiment seven: one of present embodiment and embodiment one to six are unlike H-TiO described in step 2
2the mass ratio of powder and terpinol is 1:5.Other steps and parameter identical with one of embodiment one to six.
Embodiment eight: one of present embodiment and embodiment one to seven are unlike H-TiO described in step 2
2the mass ratio of powder and ethanol is 1:4.Other steps and parameter identical with one of embodiment one to seven.
Beneficial effect of the present invention is verified by following examples:
Embodiment one: a kind of H-TiO of the present embodiment
2the preparation method of dye-sensitized solar cell anode specifically carries out according to the following steps:
One, titanic oxide nano powder is positioned in quartz boat, the quartz boat filling titanic oxide nano powder is placed in the autoclave being full of hydrogen and reacts, then with the heating rate of 1 DEG C/min by reaction temperature from room temperature to 300 DEG C, after 300 DEG C of insulation 5h, transfer to after leaving standstill 1h in vacuum drying chamber, be cooled to room temperature, obtain H-TiO
2powder; Described titanic oxide nano powder adopts sol gel synthesis to be prepared from;
Two, by H-TiO
2powder, ethyl cellulose, terpinol and ethanol mix, and stir and obtain slurry, using 250 order silk screens as basis material, basis material prints 6 slurries, obtains the H-TiO of six layers
2film, then to the H-TiO of six layers
2film heats from room temperature to 500 DEG C with the heating rate of 1 DEG C/min, is to be incubated 0.5h under the condition of 500 DEG C in temperature, obtains H-TiO
2dye-sensitized solar cell anode; Described H-TiO
2the mass ratio of powder and ethyl cellulose is 1:0.27; Described H-TiO
2the mass ratio of powder and terpinol is 1:4.68; Described H-TiO
2the mass ratio of powder and ethanol is 1:2.98.
Described in present embodiment, titanic oxide nano powder is prepared by sol gel synthesis, and concrete operation step is as follows:
By 0.3mL ~ 0.6mLHNO
3join in 50mL ~ 100mL deionized water with 0.1g ~ 3gF127 and mix and stir, obtain mixed solution, with the speed of 60/min, 0.02mol/L ~ 0.05mol/L butyl titanate is added drop-wise in mixed solution under the condition stirred, after dropping terminates, be heat 4h ~ 8h under the water bath condition of 80 DEG C ~ 100 DEG C in temperature by mixed solution, obtain the mixture of colloidal sol shape, the mixture of colloidal sol shape is transferred in the water heating kettle of sealing, then be react 12h ~ 30h in the baking oven of 160 DEG C ~ 200 DEG C in temperature, deionized water is first adopted by product to wash after reaction terminates 3 ~ 5 times, absolute ethanol is adopted to wash again 3 ~ 5 times, naturally cool to room temperature, then with the centrifugal speed of 3000rpm ~ 15000rpm, centrifugation is carried out to product, obtain solid, solid first adopts deionized water to wash 2 ~ 5 times, adopt absolute ethanol washing again 2 ~ 5 times, then the dry 1h ~ 5h of vacuum drying chamber of 100 DEG C is placed in, finally be put in Muffle furnace, be calcine 0.5h ~ 6h under the condition of 300 DEG C ~ 600 DEG C in temperature, be cooled to room temperature, obtain titanic oxide nano powder.
Embodiment two: a kind of TiO of the present embodiment
2the preparation method of dye-sensitized solar cell anode specifically carries out according to the following steps:
Titanic oxide nano powder, ethyl cellulose, terpinol and ethanol are mixed, stir and obtain slurry, use 250 order silk screens to carry out silk screen printing to slurry, the effective area of silk screen is 16cm
2, in the vertical direction prints six times, obtains the TiO of six layers
2film, then to the TiO of six layers
2film heats from room temperature to 500 DEG C with the heating rate of 1 DEG C/min, is to be incubated 0.5h under the condition of 500 DEG C in temperature, obtains TiO
2dye-sensitized solar cell anode; The mass ratio of described titanic oxide nano powder and ethyl cellulose is 1:0.27; The mass ratio of described titanic oxide nano powder and terpinol is 1:4.68; The mass ratio of described titanic oxide nano powder and ethanol is 1:2.98.
Described in present embodiment, titanic oxide nano powder is prepared by sol gel synthesis, and concrete operation step is as follows:
By 0.3mL ~ 0.6mLHNO
3join in 50mL ~ 100mL deionized water with 0.1g ~ 3gF127 and mix and stir, obtain mixed solution, with the speed of 60/min, 0.02mol/L ~ 0.05mol/L butyl titanate is added drop-wise in mixed solution under the condition stirred, after dropping terminates, be heat 4h ~ 8h under the water bath condition of 80 DEG C ~ 100 DEG C in temperature by mixed solution, obtain the mixture of colloidal sol shape, the mixture of colloidal sol shape is transferred in the water heating kettle of sealing, then be react 12h ~ 30h in the baking oven of 160 DEG C ~ 200 DEG C in temperature, deionized water is first adopted by product to wash after reaction terminates 3 ~ 5 times, absolute ethanol is adopted to wash again 3 ~ 5 times, naturally cool to room temperature, then with the centrifugal speed of 3000rpm ~ 15000rpm, centrifugation is carried out to product, obtain solid, solid first adopts deionized water to wash 2 ~ 5 times, adopt absolute ethanol washing again 2 ~ 5 times, then the dry 1h ~ 5h of vacuum drying chamber of 100 DEG C is placed in, finally be put in Muffle furnace, be calcine 0.5h ~ 6h under the condition of 300 DEG C ~ 600 DEG C in temperature, be cooled to room temperature, obtain titanic oxide nano powder.
Fig. 1 is the H-TiO that embodiment one step one obtains
2the stereoscan photograph of powder; As can be seen from the figure the H-TiO prepared
2powder is nanometer bead and a small amount of V-arrangement crystal.
The H-TiO that Fig. 2 obtains for the titanic oxide nano powder described in embodiment two and embodiment one step one
2the ultraviolet-visible absorption spectra figure of powder, wherein 1 is the titanic oxide nano powder described in embodiment two, and 2 is the H-TiO that embodiment one step one obtains
2powder; As can be seen from the figure H-TiO
2this powder of powder has in visibility region and absorbs very by force.
The H-TiO that Fig. 3 obtains for the titanic oxide nano powder described in embodiment two and embodiment one step one
2mo Te-Xiao Tuo the base curves of powder, wherein 1 is the titanic oxide nano powder described in embodiment two, and 2 is the H-TiO that embodiment one step one obtains
2powder; As can be seen from the figure sample is all n-type semiconductor, and hydrogenation treatment does not affect for the type of semiconductor.H-TiO
2the slope of nano particle is less than blank TiO
2sample, illustrates H-TiO
2there is the higher density of donors.
Fig. 4 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode is at the short circuit current of simulating under 1.5G sunlight and open circuit voltage curve, and wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode; As can be seen from the figure H-TiO
2light anode cell can increase short circuit current and open circuit voltage, thus improves the electricity conversion of battery.
Fig. 5 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the AC impedance spectrogram of light anode cell under illumination condition prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode; As can be seen from the figure H-TiO
2light anode cell can suppress the recombination reaction of photo-generated carrier, is conducive to improving battery performance.
Fig. 6 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the open circuit voltage attenuation curve of light anode cell prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode; As can be seen from the figure H-TiO
2in light anode cell, the life-span of charge carrier adds.
Fig. 7 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode and the H-TiO obtained with embodiment one
2the electricity conversion of light anode cell under simulation 1.5G sunlight prepared by dye-sensitized solar cell anode, wherein 1 is the TiO obtained with embodiment two
2light anode cell prepared by dye-sensitized solar cell anode, 2 is the H-TiO obtained with embodiment one
2light anode cell prepared by dye-sensitized solar cell anode; As can be seen from the figure H-TiO
2light anode cell has higher electricity conversion.
Claims (8)
1. a H-TiO
2the preparation method of dye-sensitized solar cell anode, is characterized in that H-TiO
2the preparation method of dye-sensitized solar cell anode specifically carries out according to the following steps:
One, titanic oxide nano powder is positioned in quartz boat, the quartz boat filling titanic oxide nano powder is placed in the autoclave being full of hydrogen and reacts, then with the heating rate of 1 DEG C/min by reaction temperature from room temperature to 300 DEG C ~ 600 DEG C, after 300 DEG C ~ 600 DEG C insulation 3h ~ 8h, transfer to after leaving standstill 1h ~ 5h in vacuum drying chamber, be cooled to room temperature, obtain H-TiO
2powder; Described titanic oxide nano powder adopts sol gel synthesis to be prepared from;
Two, by H-TiO
2powder, ethyl cellulose, terpinol and ethanol mix, and stir and obtain slurry, using 250 order silk screens as basis material, basis material prints 6 slurries, obtains the H-TiO of six layers
2film, then to the H-TiO of six layers
2film heats from room temperature to 200 DEG C ~ 600 DEG C with the heating rate of 1 DEG C/min, is be incubated 0.1h ~ 1h under the condition of 200 DEG C ~ 600 DEG C, obtains H-TiO in temperature
2dye-sensitized solar cell anode; Described H-TiO
2the mass ratio of powder and ethyl cellulose is 1:(0.1 ~ 0.5); Described H-TiO
2the mass ratio of powder and terpinol is 1:(2 ~ 7); Described H-TiO
2the mass ratio of powder and ethanol is 1:(2 ~ 5).
2. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that described in step one at 400 DEG C of insulation 5h.
3. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that described in step one at 500 DEG C of insulation 4h.
4. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, to is characterized in that in step one heating for dissolving 20min under temperature is the condition of 90 DEG C.
5. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that under temperature is the condition of 500 DEG C, being incubated 0.5h in step 2.
6. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that H-TiO described in step 2
2the mass ratio of powder and ethyl cellulose is 1:0.3.
7. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that H-TiO described in step 2
2the mass ratio of powder and terpinol is 1:5.
8. a kind of H-TiO according to claim 1
2the preparation method of dye-sensitized solar cell anode, is characterized in that H-TiO described in step 2
2the mass ratio of powder and ethanol is 1:4.
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Cited By (1)
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| CN105931847B (en) * | 2016-05-26 | 2017-03-22 | 河南理工大学 | Preparation method of coal-based graphene fibre photo-electrode, and application thereof in photoelectric conversion with low-concentration gas |
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