CN103700508B - Perovskite oxide counter electrode material for DSSCs (dye sensitized solar cells) - Google Patents
Perovskite oxide counter electrode material for DSSCs (dye sensitized solar cells) Download PDFInfo
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- CN103700508B CN103700508B CN201310627427.XA CN201310627427A CN103700508B CN 103700508 B CN103700508 B CN 103700508B CN 201310627427 A CN201310627427 A CN 201310627427A CN 103700508 B CN103700508 B CN 103700508B
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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 discloses a perovskite oxide thin film electrode, a preparation method thereof and application of the perovskite oxide thin film electrode in the field of DSSCs (dye sensitized solar cells), and belongs to the field of DSSCs. The preparation method comprises the following steps: synthesizing perovskite oxide powder by using a sol-gel method, mixing the powder, a solvent, an additive and the like to obtain slurry, depositing the slurry on a conductive thin film substrate by using the silk screen printing method, and performing sintering to prepare a porous perovskite oxide counter electrode for DSSCs. The perovskite oxide thin film electrode, the preparation method and the application have the benefits that the perovskite oxide counter electrode is higher in catalytic performance, stable in chemical performance, and low in cost, the sources are extensive, the cost is greatly lowered and the large-scale industrialization of the DSSCs is facilitated.
Description
Technical field
The invention belongs to dye-sensitized solar cells technical field is and in particular to dye-sensitized solar cells Ca-Ti ore type
Sull is to electrode.
Background technology
Dye-sensitized solar cells (dye sensitized solar cells, dsscs) are because it is with low cost, making
Simply, stable performance, environmental friendliness, shows powerful commercial application value.Develop first from gr professor tzel in 1991
Conversion efficiency reaches 7.9% dye-sensitized solar cells, and current laboratory liquid state electrolyte battery photoelectric transformation efficiency exceedes
12%(science, 2011,334,6056).And this had based on the novel solar battery of nano-crystalline semiconductor material
Improve the potential advantages of efficiency and reduces cost further it is most likely that replacing conventional solid-state photovoltaic device such as: silicon solar electricity
Pond, cadmium antimonide hull cell and copper indium gallium selenide film battery, and become the leading of following solaode.
Dsscs is mainly by the nanocrystalline tio of porous semi-conductor of dye sensitization2Thin film working electrode, contain i-/i3 -Oxidation is also
Former electricity to electrolyte and catalysis i3 -To electrode form.To electrode Main Function: collect and transport electronics and (receive and return outside battery
The electronics on road and pass it on redox reaction electronics in electrolyte to)；Adsorb and be catalyzed i3 -；Reflectance-transmittance light；Right
Electrode pair improves the photoelectric properties of dsscs and photoelectric transformation efficiency plays an important role.Therefore, need to have low resistance to electrode
With high catalysis activity, to reduce energy loss to electron transfer process on electrode.Typically to electrode by electrically conducting transparent glass
Platinum (platinum, pt) the Catalytic Layer composition of glass (fto glass) and fto conductive glass surface.But, noble metal platinum is not only
Disagree with the original intention of the low cost of dye-sensitized solar cells, large-scale production and application have obvious limitation, and
The phenomenon that the pt Catalytic Layer presence that some techniques are obtained easily is corroded from an electrolyte, leads to device stability to decline.Therefore, explore newly
Inexpensively non-platinum is one, dsscs field study hotspot in recent years to electrode to type.
In recent years, perovskite composite oxide (abo3) there is higher conductance, b position is doped modification and is relatively beneficial to carry
High electrode performance.Wherein, the lani of better performances0.8fe0.2o3Achieve preliminary in secondary metals hydride-air battery
Application.Meanwhile, lanthanum manganate base film has the performances such as electric heating, catalyst be temperature sensitive, causes the extensive concern of researcher.Ca-Ti ore type
Sull preparation method is numerous, and silk-screen printing technique simple it is easy to scale.The Ca-Ti ore type of silk screen print method preparation
Composite oxide film has aboundresources to electrode, cheap, environmental friendliness and suitable large-scale production characteristic, is to replace
The ideal material to electrode for the platinum.
Content of the invention
Limited to electrode reserves for traditional platinum, expensive, it is not easy to the defects such as industrialization production, the mesh of the present invention
Be to provide a kind of low cost, catalysis activity high and be suitable to the perofskite type oxide of industrialization production to electrode.
Above-mentioned purpose is realized by below scheme:
A kind of perofskite type oxide of dye-sensitized solar cells to electrode,
It is characterized in that: preparation method comprises the following steps:
(1) slaine is added in deionized water solvent, stirs, then by edta proportionally n(edta): n(gold
Belong to ion)=(0.1-100): 1 is added in the aqueous solution of slaine, adds adhesion agent ethylene glycol, ethylene glycol proportionally n
(ethylene glycol): n(edta)=(0.1-100): 1 addition, it is stirred continuously, ph value stabilization is adjusted in 4- by Deca ammonia or nitric acid
12, then water-bath transpiring moisture obtains gel, gel is vacuum dried to obtain at 60-200 DEG C xerogel, then 100- in atmosphere
500 DEG C of generation spontaneous combustions, carry out further heat treatment in atmosphere after combustion product is ground, heat-treatment temperature range is 60-
1100 DEG C, it is prepared into perofskite type oxide powder body；
(2) perofskite type oxide powder body is mixed acquisition screen printing sizing agent with solvent, additive, by the silk having configured
Wire mark swabbing abrasive lapping 0.5-12h, is then deposited in conductive film substrate using silk screen print method, and the thin film after printing is through dry
Dry and 300-520 DEG C sintering 0.5-12h, eventually become dye-sensitized solar cells porous Ca-Ti ore type sull to electricity
Pole.
A kind of perofskite type oxide of described dye-sensitized solar cells to electrode it is characterised in that: described
Slaine is the mol ratio of metal ion is la:ni:fe=1:(0.1-1): the nitrate of the lanthanum of (0.9-0), nickel and ferrous metal,
Prepared perofskite type oxide powder body is lani1-xfexo3(x=0-0.9), or described slaine be metal ion mole
Than for la:sr:mn=(0.1-1): the nitrate of the lanthanum, strontium and manganese Metal of (0.9-0), prepared perofskite type oxide powder body
For la1-xsrxmno3(x=0-0.9).
A kind of perofskite type oxide of described dye-sensitized solar cells to electrode it is characterised in that: described lead
Conductive film substrate is electro-conductive glass or other conductive substrates materials.
A kind of perofskite type oxide of described dye-sensitized solar cells to electrode it is characterised in that: described molten
Agent is terpineol, and described additive is ethyl cellulose.
A kind of perofskite type oxide of described dye-sensitized solar cells to electrode it is characterised in that: described
Each raw material weight proportioning of soup processed of screen printing sizing agent is: wPerovskite powder: wTerpineol:wEthyl cellulose=1:(0.1-10): (0.3-30).
Described Ca-Ti ore type lani1-xfexo3Thin film comprises the steps: to electrode preparation
(1) according to la:ni:fe=1:(0.1-1): the mol ratio of (0.9-0) weighs Lanthanum (III) nitrate, nickel nitrate and ferric nitrate, with
Deionized water is solvent, after being sufficiently stirred for, according to n(edta): n(metal ion)=(0.1-100): the ammonia of 1 addition edta is molten
Liquid, adds adhesion agent ethylene glycol, ethylene glycol proportionally n(ethylene glycol): n(edta)=(0.1-100): 1 addition, constantly stir
Mix, adjust ph value stabilization in 4-12,40-70 DEG C of heating slow evaporation moisture of water-bath, finally obtain thick clear gel, will coagulate
Glue is vacuum dried 5-24h at 60-100 DEG C, obtains xerogel, then 300-500 DEG C of generation spontaneous combustion in atmosphere, by combustion product
Carry out further heat treatment in atmosphere, heat-treatment temperature range is 60-900 DEG C, heating rate is 10 DEG C of min after grinding-1.
Obtain final product required Ca-Ti ore type lani1-xfexo3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and lani1-xfexo3The mass ratio of powder body is
wlani1-xfexo3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds the slurry forming sticky suitable silk screen printing for 30 minutes
Material.Using silk screen print method by the slurry having configured silk-screen in conductive film substrate, 300-520 DEG C sinter 0.5-12h, with
Stove natural cooling, forms porous lani1-xfexo3Thin film is to electrode.
Described Ca-Ti ore type la1-xsrxmno3Thin film comprises the steps: to electrode preparation
(1) according to la:sr:mn=1:(0.1-1): the mol ratio of (0.9-0) weighs Lanthanum (III) nitrate, strontium nitrate and manganese nitrate,
With deionized water as solvent, after being sufficiently stirred for, according to n(edta): n(metal ion)=(0.1-100): the ammonia of 1 addition edta
Solution, adds adhesion agent ethylene glycol, ethylene glycol proportionally n(ethylene glycol): n(edta)=(0.1-100): 1 addition, constantly
Stirring, adjusts ph value stabilization in 4-12,40-70 DEG C of heating slow evaporation moisture of water-bath, finally obtains thick clear gel, will
Gel is vacuum dried 5-24h at 60-100 DEG C, obtains xerogel, then 300-500 DEG C of generation spontaneous combustion in atmosphere, and burning is produced
Thing carries out further heat treatment after grinding in atmosphere, and heat-treatment temperature range is 60-900 DEG C, and heating rate is 10 DEG C
min-1.Obtain final product required Ca-Ti ore type la1-xsrxmno3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and la1-xsrxmno3The mass ratio of powder body is
wla1-xsrxmno3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds the slurry forming sticky suitable silk screen printing for 30 minutes
Material.Using silk screen print method by the slurry having configured silk-screen in conductive film substrate, 300-520 DEG C sinter 0.5-12h, with
Stove natural cooling, forms porous la1-xsrxmno3Thin film is to electrode.
According to present invention preparation perofskite type oxide to electrode, electricity conversion is different, wherein Fe2O3 doping nickel acid
Lanthanum (lani0.8fe0.2o3) thin film to electrode dsc photoelectric transformation efficiency be higher than strontium lanthanum manganese oxide (la0.6sr0.4mno3With
la0.8sr0.2mno3) thin film is to electrode.Meanwhile, perovskite composite oxide thin film has aboundresources, cheap, environment
Friendly and suitable large-scale production characteristic, is to replace the ideal material to electrode for the noble metal platinum.
Brief description
Accompanying drawing 1 lani1-xfexo3The xrd collection of illustrative plates of (x=0.2,0.4).
Accompanying drawing 2 Ca-Ti ore type lani0.8fe0.2o3To electrode stereoscan photograph.Fig. 2 shows, is deposited on conductive film base
The lani of basal surface0.8fe0.2o3There is agglomeration in granule, assume lamellar.
Accompanying drawing 3 Ca-Ti ore type lani0.8fe0.2o3, la0.6sr0.4mno3With pyrolysis dsscs electric current-electricity to electrode assembling for the platinum
Buckle line chart (j-vCurve chart).
Specific embodiment
Below in conjunction with specific embodiment and coordinate accompanying drawing that the present invention is described in further detail, so that people in the art
Member more fully understands the present invention, but the invention is not limited in following examples.
Embodiment 1: Ca-Ti ore type lani0.8fe0.2o3Preparation to electrode:
(1) weigh 0.005mol Lanthanum (III) nitrate (la(nio3)3) 6h2O), 0.004mol nickel nitrate (ni(nio3)2)
6h2O), 0.001mol ferric nitrate (fe(nio3)3) 9h2O), successively respectively the nitrate of each cation is dissolved in deionization
In water, be sufficiently mixed with 0.011mol chelating agent edta, and add 0.033mol ethylene glycol be adhesion agent.Be stirred continuously
In the case of adjust ph value stabilization about 7, until obtaining homogeneous transparent solution, and slow evaporation moisture at being placed on 40-70 DEG C,
Until obtaining transparent gel.Gel is vacuum dried 12h at 100 DEG C, obtains cellular xerogel, in atmosphere about 300
DEG C occur spontaneous combustion, carry out further heat treatment after combustion product is ground in atmosphere, heat-treatment temperature range be 60-900 DEG C,
Heating rate is 10 DEG C of min-1.Obtain final product required Ca-Ti ore type lani0.8fe0.2o3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and lani0.8fe0.2o3The mass ratio of powder body
For wlani0.8fe0.2o3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds the slurry forming sticky suitable blade coating for 30 minutes
Material.Sinter 30 minutes at 450 DEG C, with stove natural cooling, form porous membrane.
Refer to Fig. 1, Fig. 1 show the Ca-Ti ore type lani of present invention preparation0.8fe0.2o3Xrd collection of illustrative plates.All of spread out
Penetrate peak to compare with standard spectrogram it was demonstrated that gained crystal is Ca-Ti ore type pure phase lani0.8fe0.2o3.
According to conventional methods by prepared Ca-Ti ore type lani0.8fe0.2o3Electrode group is dressed up with dsscs, cell area
For 0.25cm2.The current-voltage dsscs assembling being recorded under am1.5 simulated solar irradiation dye-sensitized solar cells is bent
Line (shown in Fig. 3 curve 1).Using Ca-Ti ore type lani0.8fe0.2o3Dssc to electrode assembling, its open-circuit voltage (v oc) be
556mv, short circuit current (j sc) it is 7.35ma cm-2, fill factor, curve factor (ff) is 0.30, electricity conversion (η) it is 1.24%.
Embodiment 2: Ca-Ti ore type lani0.6fe0.4o3Preparation to electrode:
(1) weigh 0.005mol Lanthanum (III) nitrate (la(nio3)3) 6h2O), 0.003mol nickel nitrate (ni(nio3)2)
6h2O), 0.002mol ferric nitrate (fe(nio3)3) 9h2O), successively respectively the nitrate of each cation is dissolved in deionization
In water, be sufficiently mixed with 0.011mol chelating agent edta, and add 0.033mol ethylene glycol be adhesion agent.Be stirred continuously
In the case of adjust ph value stabilization about 7, until obtaining homogeneous transparent solution, and slow evaporation moisture at being placed on 40-70 DEG C,
Until obtaining transparent gel.Gel is vacuum dried 12h at 100 DEG C, obtains cellular xerogel, in atmosphere about 300
DEG C occur spontaneous combustion, carry out further heat treatment after combustion product is ground in atmosphere, heat-treatment temperature range be 60-900 DEG C,
Heating rate is 10 DEG C of min-1.Obtain final product required Ca-Ti ore type lani0.6fe0.4o3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and lani0.6fe0.4o3The mass ratio of powder body
For wlani0.6fe0.4o3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds the slurry forming sticky suitable blade coating for 30 minutes
Material.Sinter 30 minutes at 450 DEG C, with stove natural cooling, form porous membrane.
Refer to Fig. 1, Fig. 1 show the Ca-Ti ore type lani of present invention preparation0.6fe0.4o3Xrd collection of illustrative plates.All of spread out
Penetrate peak to compare with standard spectrogram it was demonstrated that gained crystal is Ca-Ti ore type lani0.6fe0.4o3, wherein contain a small amount of la2o3Impurities phase.
According to conventional methods by prepared Ca-Ti ore type lani0.6fe0.4o3Electrode group is dressed up with dsscs, cell area
For 0.25cm2.The dsscs assembling is recorded under am1.5 simulated solar irradiation its open-circuit voltage (v oc) it is 509mv, short circuit electricity
Stream (j sc) it is 5.87ma cm-2, fill factor, curve factor (ff) is 0.30, electricity conversion (η) it is 0.89%.
Embodiment 3: Ca-Ti ore type la0.6sr0.4mno3The preparation of electrode
(1) weigh 0.009mol Lanthanum (III) nitrate (la(nio3)3·6h2O), 0.006mol strontium nitrate (sr(nio3)2),
0.015mol manganese nitrate (mn(nio3)2, 50%), respectively by the nitrate dissolving of each cation in deionized water successively, with
0.033mol chelating agent edta is sufficiently mixed, and add 0.099mol ethylene glycol be adhesion agent.Adjust ph value stabilization about 7
Afterwards, slow evaporation moisture and at being placed on 40-70 DEG C, until obtain the transparent gel of peony viscous.By gel at 100 DEG C
Lower vacuum drying 12h, obtains the cellular xerogel of brown, in atmosphere about 300 DEG C generation spontaneous combustion, after combustion product is ground
In the air carries out further heat treatment, and heat-treatment temperature range is 60-900 DEG C, and heating rate is 10 DEG C of min-1, obtain final product required
Ca-Ti ore type la0.6sr0.4mno3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and la0.6sr0.4mno3The mass ratio of powder body
For w la0.6sr0.4mno3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds 30 minutes and forms sticky suitable blade coating
Slurry.Sinter 30 minutes at 450 DEG C, with stove natural cooling, form porous membrane.
According to conventional methods by prepared Ca-Ti ore type la0.6sr0.4mno3Electrode group is dressed up with dsscs, cell area
For 0.25cm2.The current-voltage dsscs assembling being recorded under am1.5 simulated solar irradiation dye-sensitized solar cells is bent
Line (shown in Fig. 3 curve 2).Using Ca-Ti ore type la0.6sr0.4mno3Dssc to electrode assembling, its open-circuit voltage (v oc) be
625mv, short circuit current (j sc) it is 2.73ma cm-2, fill factor, curve factor (ff) is 0.14, electricity conversion (η) it is 0.24%.
Embodiment 4: Ca-Ti ore type la0.8sr0.2mno3The preparation of electrode
(1) weigh 0.012mol Lanthanum (III) nitrate (la(nio3)3·6h2O), 0.003mol strontium nitrate (sr(nio3)2),
0.015mol manganese nitrate (mn(nio3)2, 50%), respectively by the nitrate dissolving of each cation in deionized water successively, with
0.033mol chelating agent edta is sufficiently mixed, and add 0.099mol ethylene glycol be adhesion agent.Adjust ph value stabilization about 7
Afterwards, slow evaporation moisture and at being placed on 40-70 DEG C, until obtain the transparent gel of peony viscous.By gel at 100 DEG C
Lower vacuum drying 12h, obtains the cellular xerogel of brown, in atmosphere about 300 DEG C generation spontaneous combustion, after combustion product is ground
In the air carries out further heat treatment, and heat-treatment temperature range is 60-900 DEG C, and heating rate is 10 DEG C of min-1, obtain final product required
Ca-Ti ore type la0.8sr0.2mno3Powder body.
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and la0.8sr0.2mno3The mass ratio of powder body
For wla0.8sr0.2mno3: wTerpineol:wEthyl cellulose=1:1:3；The slurry having configured grinds the slurry forming sticky suitable blade coating for 30 minutes
Material.Sinter 30 minutes at 450 DEG C, with stove natural cooling, form porous membrane.
According to conventional methods by prepared Ca-Ti ore type la0.8sr0.2mno3Electrode group is dressed up with dsscs, cell area
For 0.25cm2.The dsscs assembling is recorded under am1.5 simulated solar irradiation its open-circuit voltage (v oc) it is 510mv, short circuit electricity
Stream (j sc) it is 5.37ma cm-2, fill factor, curve factor (ff) is 0.13, electricity conversion (η) it is 0.37%.
Comparative example 1: as a comparison, we are also prepared for platinum to electrode using pyrolysismethod.By 5mm platinum acid chloride solution drop coating
In 1.5 × 1.5cm2Fto conductive glass surface, and sinter 30 minutes at 400 DEG C in Muffle furnace, with stove natural cooling, make
Obtain required platinum to electrode.By the platinum of preparation to electrode, it is assembled into dsscs in the same circumstances, cell area is 0.25cm2.Will
The dsscs assembling records current -voltage curve (Fig. 3 curve 3 of dye-sensitized solar cells under am1.5 simulated solar irradiation
Shown).Using pyrolysis the dsscs to electrode assembling for the platinum, its open-circuit voltage (v oc) it is 683mv, short circuit current (j sc) be
8.13ma·cm-2, fill factor, curve factor (ff) is 0.63, electricity conversion (η) it is 3.48%.
Claims (1)
1. a kind of perofskite type oxide of dye-sensitized solar cells to electrode it is characterised in that: preparation method include with
Lower step:
(1) weigh 0.005mol la(nio3)3) 6h2O, 0.004mol ni(nio3)2) 6h2O, 0.001mol fe
(nio3)3) 9h2The nitrate of each cation is successively dissolved in deionized water, with 0.011mol chelating agent edta by o respectively
Be sufficiently mixed, and add 0.033mol ethylene glycol be adhesion agent；Pass through Deca ammonia or nitric acid in the case of being stirred continuously
Adjust ph value stabilization about 7, until obtaining homogeneous transparent solution, and slow evaporation moisture at being placed on 40-70 DEG C, until
To transparent gel；Gel is vacuum dried 12h at 100 DEG C, obtains cellular xerogel, in atmosphere about 300 DEG C of generations
Spontaneous combustion, carries out further heat treatment in atmosphere after combustion product is ground, heat-treatment temperature range is 60-900 DEG C, and heat up speed
Rate is 10 DEG C of min-1；Obtain final product required Ca-Ti ore type lani0.8fe0.2o3Powder body；
(2) press certain mass ratio and add terpineol and ethyl cellulose, itself and lani0.8fe0.2o3The mass ratio of powder body is w
lani0.8fe0.2o3: w terpineol: w ethyl cellulose=1:1:3；The slurry having configured grinds 30 minutes and forms sticky being suitable for
The screen printing sizing agent of blade coating；Then it is deposited in conductive film substrate using silk screen print method, the thin film drying after printing
Sinter 30 minutes with 450 DEG C, with stove natural cooling, form porous membrane, as eventually become dye-sensitized solar cells and use
Porous Ca-Ti ore type sull is to electrode.
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| CN104091692A (en) * | 2014-05-30 | 2014-10-08 | 上海北京大学微电子研究院 | Solar cell with high conversion efficiency and preparation method thereof |
| CN106024396B (en) * | 2016-07-13 | 2018-10-30 | 中国科学院武汉物理与数学研究所 | It is a kind of for dye-sensitized solar cells to electrode and preparation method thereof |
| CN112058272A (en) * | 2020-08-20 | 2020-12-11 | 天津大学 | Perovskite type catalyst prepared by sol-gel weak oxidation calcination method and method |
| CN114100604B (en) * | 2020-08-27 | 2023-06-06 | 清华大学 | LaMnO 3 Catalyst, preparation method and application thereof |
| CN114813880A (en) * | 2022-04-28 | 2022-07-29 | 安徽大学 | Integrated electrochemical gas sensor and preparation process thereof |
| CN115084318B (en) * | 2022-07-18 | 2023-06-09 | 西南科技大学 | Inorganic perovskite type LaNiO 3 Preparation and application of visible photoconductive film |
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