CN112593246A - Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy - Google Patents

Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy Download PDF

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CN112593246A
CN112593246A CN202011100344.1A CN202011100344A CN112593246A CN 112593246 A CN112593246 A CN 112593246A CN 202011100344 A CN202011100344 A CN 202011100344A CN 112593246 A CN112593246 A CN 112593246A
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energy
hydrogen
electrode
clean water
dripping
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曹媛
姚颖方
高麟峰
吴聪萍
邹志刚
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Nanjing University
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Nanjing University
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/133Renewable energy sources, e.g. sunlight

Abstract

Method for preparing device for synchronously generating hydrogen energy and clean water by utilizing light energy, and synthesizing FeNi wrapped by bamboo-shaped carbon nano tubes3Oxygen evolution electrocatalyst raw material, 1) adding hydrated ferric nitrate, nickel nitrate and urea into distilled water, and stirring 1h is more than h; the molar ratio of iron to nickel is 1: 2.5-1: 3.5; excess of urea and distilled water; 2) immersing melamine sponge into the solution obtained in the step 1), and aging in air for more than 5 hours; 3) drying and carbonizing, grinding the obtained product into powder, and dripping the powder on the gold-sprayed conductive glass by a dripping method to obtain an oxygen evolution electrode; the Pt/C is used as a hydrogen evolution electrode, and the maximum utilization of light energy to clean energy is realized. The invention can realize that the conversion efficiency from light energy to hydrogen energy is 20.1%, the efficiency of generating clean water by light and heat reaches 93.5%, and the comprehensive utilization efficiency of solar energy reaches 87.5% under the condition of room temperature.

Description

Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy
Technical Field
The invention belongs to the field of new energy, and particularly relates to construction of a solar energy comprehensive utilization device capable of simultaneously generating hydrogen energy and clean water.
Background
Achieving efficient conversion of solar energy has become a necessary trend to meet ever-increasing global energy and environmental demands. Countless potential applications ranging from solar energy to electrical energy, fuel cells or clean water have been demonstrated through rational material design, light energy management and design of reaction processes. Currently, there is increasing research interest in involving multiple solar energy conversion modalities in a system. It enables us to avoid the energy conversion efficiency problems of traditional "single function" systems, such as photo-thermal, photovoltaic, photoelectrochemical and solar cell driven water splitting processes, which typically provide limited solar energy utilization. Some solar energy utilization systems may be "multi-functional" in that systems that are capable of performing some single function are typically cascaded. For example, some researchers have cascaded photo-thermal systems and thermoelectric devices to generate clean water by using light energy and a small amount of electric energy by using heat evaporation enthalpy. As another example, photovoltaic and thermoelectric devices have been combined to achieve multi-stage conversion from solar energy to electrical energy. However, these methods of simply assembling a plurality of single-function systems into one system have been difficult to reduce complexity, cost, and timeliness of energy conversion to some extent. Therefore, designing a highly integrated system to achieve efficient and comprehensive solar energy conversion is a difficult problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a solar comprehensive utilization device capable of simultaneously generating hydrogen energy and clean water. Due to its narrow band gap structure and high specific surface area, carbon-based materials are important electrode materials for various electrocatalytic reactions. These characteristics make them able to load a large amount of metal atoms as catalytic active sites, thereby conveniently adjusting their electronic structures, greatly improving the electron transfer performance, and effectively improving the reaction activity of hydrogen production by water decomposition. On the other hand, carbon-based materials have excellent light absorption ability as natural black substances, and thus they are widely used for photothermal conversion.
The invention is innovative in that FeNi is used3The alloy catalyst is wrapped in the bamboo-shaped carbon nanotube array, so that the carbon-based material has the capabilities of electrocatalytic oxygen evolution and photothermal conversion at the same time.
In order to simultaneously exert the dual functions of generating hydrogen energy and cleaning water by using a carbon-based material, a solar comprehensive utilization device is designed. The device can simultaneously generate solar cell driven water decomposition reaction and rapid temperature rise process (generating high temperature of 80 ℃ only needs 30 seconds). The photo-generated heat energy can be used as a catalytic booster for increasing the reaction temperature and further improving the water decomposition reaction activity, and can also be used as a solar steam generator for sewage purification. Finally, the solar hydrogen production efficiency of more than 20% and the solar clean water production efficiency of 93.5% are realized simultaneously, so that the solar clean water production system has wide application prospects.
The technical solution of the invention is as follows: a method for preparing a device for synchronously generating hydrogen energy and clean water by utilizing light energy,
(1) synthesizing FeNi wrapped by bamboo-shaped carbon nano-tubes3The oxygen evolution electrocatalyst comprises the following raw material steps:
1) mixing ferric nitrate or hydrated ferric nitrate (Fe (NO)3·9H2O)3Nickel nitrate (Ni (NO)3·9H2O)3Adding urea and distilled water, and stirring for more than 1 h; the molar ratio of iron to nickel is 1: 2.5-1: 3.5; excess of urea and distilled water;
2) immersing melamine sponge into the solution obtained in the step 1), and aging in air for more than 5 hours;
3) putting the aged melamine sponge obtained in the step 2) into an oven for drying (drying condition: 80-130 ℃ for 5-24 h.
4) Carbonizing the product obtained in step 3) in nitrogen (carbonization conditions: 900 plus or minus 100 ℃ for 1-3 h; especially the heating speed is 3-15 ℃/min);
5) grinding the product obtained in the step 4) into powder;
(2) construction of solar energy comprehensive utilization device
2-1) adding the synthesized oxygen evolution electrocatalyst into a solvent comprising ethanol and the like, adding a naphthol solution as an adhesive, and performing ultrasonic treatment for more than 15 min;
2-2) preparing a commercial Pt/C hydrogen evolution electrocatalyst; or prepared by the same method as the step 1);
2-3) dripping the product obtained in the step 2-1) on the gold-sprayed conductive glass in a dripping way (the purpose of gold spraying is to enhance the conductivity), and obtaining the oxygen evolution electrode 4.
2-4) dripping the product obtained in the step 2-2) on a copper foil in a dripping mode to obtain the hydrogen evolution electrode 5.
2-5) using a PTFE film as a diaphragm and a packaging film between a cathode and an anode, using a porous cellulose film as a water supply source and a proton exchange layer, and assembling a porous foam heat insulation layer and an oxygen evolution and hydrogen evolution electrode to obtain a solar energy comprehensive utilization device; the devices constructed above are cascaded with solar cells, especially GaInP2A GaAs/Ge solar cell.
The working conditions of the invention are as follows: namely the application of the device, the oxygen evolution electrode and the hydrogen evolution electrode are used for applying power, and the power adopts a solar cell comprising cascade GaInP2The GaAs/Ge solar cell can focus sunlight irradiating an electrode to 11.23 suns (light intensity), and the illumination on the solar cell is 1 suns (light intensity), so that the efficiency of generating hydrogen from sunlight can reach 20.1%, the efficiency of generating clean water from light and heat can reach 93.5%, and the comprehensive utilization efficiency of solar energy can reach 87.5% under natural conditions.
The device of the invention is a catalyst coated with carbon material, and the carbon material is a material with narrow band gap, which can efficiently convert light into heat, and the heat can improve the kinetics of the coated electrocatalyst on one hand and can be used for evaporation to generate clean water on the other hand. By skillfully applying the carbon-based material and constructing a device as the core of 'converting solar energy into hydrogen energy and cleaning a water device at the same time', compared with a traditional photo-thermal system, the device comprehensively utilizes the solar energy and provides a liquid level, so that the separation of a battery and electrolyte is realized. The capillary force of the porous cellulose membrane is utilized to provide sufficient water for the solar comprehensive utilization device.
Has the advantages that: the invention utilizes a carbon-based electro-catalytic material (a catalyst coated by carbon material) to convert light energy into heat energy, and the heat energy promotes water decomposition reaction on one hand and can evaporate water containing pollutants or impurities to obtain pure distilled water on the other hand. The invention can effectively reduce heat loss and realize the maximum utilization of light energy to clean energy through ingenious structural design. The invention can realize that the conversion efficiency from light energy to hydrogen energy is 20.1%, the efficiency of generating clean water by light and heat reaches 93.5%, and the comprehensive utilization efficiency of solar energy reaches 87.5% under the condition of room temperature. If the application scene is a place with extreme water shortage and sufficient sunlight, such as a middle east area.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
(1) the device constructed by the invention realizes the simultaneous production of hydrogen and clean water.
(2) The device constructed by the invention can reduce the heat loss to the maximum extent.
Drawings
FIG. 1 is a schematic diagram of the device design constructed in this embodiment and a photograph of the device (a). The anode oxygen evolution electrode 4 adopts FTO glass 9 coated with oxygen evolution electrocatalyst, the cathode, namely the hydrogen evolution electrode 5 adopts copper foil 10 coated with Pt/C, and a piece of porous cellulose membrane 3 is arranged in the middle to be used as a proton exchange layer and a water supply source. The device is covered with a layer of insulation to prevent heat exchange between the device and the outside atmosphere. The 1M KOH solution was drawn from the underlying beaker by capillary force of the porous cellulose membrane 3 to continuously supply the electrolyte. In the operation process, the solar cell is connected with the device under illumination for generating hydrogen, and sunlight irradiated on the device has different illumination intensities through the condenser lens 8 so as to control the temperature. Hydrogen, oxygen and water vapor generated simultaneously escape from the lower port of the device; (b) structural schematic diagram of the device, and enlarged view of the components in (a). Polytetrafluoroethylene (PTFE) gaskets are adopted to electrically insulate the two sides of the oxygen evolution electrode 4 and the hydrogen evolution electrode 5 and prevent the heat exchange between the electrodes and the environment. All parts are assembled and clamped.
FIG. 2 shows FeNi wrapped by carbon nano-bamboo joint tube prepared in this example3Appearance characterization and electrochemical performance test of the oxygen evolution electrocatalyst (a) SEM picture; (b) a TEM image; (c) polarization curves on the disk electrode; (d)1.6VRHEAnd (5) testing the stability.
FIG. 3 is an infrared thermal imaging diagram of the device constructed in this embodiment during operation, which reflects the good thermal management capability of the device; a, B, C, D, E in the figure correspond to imaging of five temperatures respectively; 1 is the temperature in the electrode zone, 2 is the temperature of the water in the cell, 3 is the intermediate membrane (porous cellulose membrane).
FIG. 4 shows the effect of photothermal on oxygen evolution kinetics enhancement in this example: (a) dependence of the temperature rise time on temperature; (b) the mass of oxygen produced at different solar intensities (applied voltage 1.6V); (c) in a two-electrode system, the device was GaInP without light and at 11.23 solar intensities2GaAs/Ge solar cell driven oxygen production by water decomposition, and GaInP2J-V curve of GaAs/Ge solar cell. (d) Oxygen evolution current-time curve without applied bias.
FIG. 5(a) is a diagram showing the light absorption of the carbon nano-bamboo tube prepared in this example; (b) a plot of rate and efficiency of clean water production by the device;
fig. 6(a) real-time monitored solar intensity (9/5/2020, Nanjing, sunny/cloudy); (b) GaInP2The GaAs/Ge solar cell drives the device to decompose and analyze the oxygen current; (c) the device produces a change in the quality of the clean water over time.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments with reference to the attached drawings so that those skilled in the art can more fully understand the present invention. Meanwhile, the data in the invention only aim at the invention, and reasonably and a plurality of adjustments and improvements can be made without departing from the concept of the invention, and the invention belongs to the protection scope of the invention.
The invention provides a device capable of synchronously producing hydrogen and clean water by utilizing solar energy, which comprises the following steps:
examples
(1) Synthesizing FeNi wrapped by bamboo-shaped carbon nano-tubes3The oxygen evolution electrocatalyst comprises the following steps:
1) 0.27g of iron nitrate (Fe (NO)3·9H2O)30.6g of nickel nitrate (Ni (NO)3·9H2O)3And 0.84g of urea was added to 225ml of distilled water and stirred for 4 hours.
2) Immersing melamine sponge into the solution obtained in the step 1), and aging in air for 12h (more than 5 h).
3) Putting the aged melamine sponge obtained in the step 2) into an oven for drying, wherein the drying conditions are as follows: 100 ℃ for 12 h.
4) Carbonizing the product obtained in step 3) in nitrogen (carbonization conditions: 900 ℃ for 2h, and the heating rate is 5 ℃/min).
5) Grinding the product obtained in the step 4) into powder.
(2) Construction of the apparatus
2-1) dropping 10mg of the synthesized oxygen evolution electrocatalyst into 400 mu L of ethanol solution, adding 50 mu L of naphthol solution as an adhesive, and carrying out ultrasonic treatment for 30 min.
2-2) preparing Pt/C hydrogen evolution electrocatalyst or using commercial products according to the same method as step 2-1).
2-3) dripping the product obtained in the step 2-1) on the gold-sprayed conductive glass in a dripping way (the purpose of gold spraying is to enhance the conductivity), and obtaining the oxygen evolution electrode.
2-4) dripping the product obtained in the step 2-2) on a copper foil in a dripping mode to obtain the hydrogen evolution electrode 5.
2-5) using PTFE membrane as diaphragm and packaging membrane between cathode and anode, using porous cellulose membrane as water supply source and proton exchange membrane, using porous foam as heat-insulating layer, assembling with oxygen-evolution and hydrogen-evolution electrodes, and mixing with GaInP2The GaAs/Ge solar cells are cascaded to obtain the constructed device.
The design principle and the picture of the device constructed in the embodiment are as follows:
fig. 1 shows a design principle and a photograph of a device constructed in this embodiment. The composition of each part of the device and the actual image of the final device are clearly seen. The working conditions of the invention are as follows: under natural conditions, as shown in fig. 1, the sunlight 7 irradiated on the electrode reaches 11.23 suns in a focusing mode through the collecting lens 8, the illumination on the solar cell is 1 sun, and the efficiency of 20.1% of sunlight for growing hydrogen and 93.5% of photo-thermal clean water production efficiency can be achieved. The voltage current is shown in fig. 4C. The treated liquid was 1M KOH.
FIG. 2 shows FeNi wrapped by the carbon nano bamboo joint array prepared in this example3A morphology map and an oxygen evolution performance map of the oxygen evolution electrocatalyst. From the morphology map, we can clearly see that we successfully synthesize FeNi wrapped by carbon nano-array3The electro-catalyst can be seen from a performance diagram that the oxygen evolution performance of the synthesized oxygen evolution electro-catalytic material is excellent and the stability is kept well within 8 h.
Fig. 3 shows an infrared thermal imaging diagram of the constructed device in operation according to the present embodiment. From this figure we can see that under illumination, there is a significant temperature rise in the working electrode and no significant temperature change in other parts, indicating that the device has good photothermal conversion capability and good thermal management capability.
As shown in fig. 4, the kinetics of oxygen evolution of the device in this example under light conditions is improved, and it can be seen from the graph that the efficiency of converting light energy into hydrogen energy is improved from 16.1% to 20.1% when the device is switched from non-light conditions to 11.23 solar light conditions.
Fig. 5 is a light absorption spectrum of the carbon-based material in this example, which shows that the material has a light absorption efficiency of 95% or more in a wavelength band from 250nm to 2500nm, and thus the material has a good photo-thermal conversion capability. The photo-thermal clean water production effect graph in the graph shows that the device can achieve 93.5% of clean water production efficiency under 11.23 solar illumination conditions.
Fig. 6 shows the device of this embodiment operating in outdoor natural light conditions. The device is tested in cloudy weather, has a good photoresponse effect, can synchronously realize the functions of producing hydrogen and cleaning water under natural conditions, and shows that the device has good practicability.

Claims (2)

1. A method for preparing a device for synchronously generating hydrogen energy and clean water by utilizing light energy is characterized by comprising the following steps:
(1) synthesizing FeNi wrapped by bamboo-shaped carbon nano-tubes3The oxygen evolution electrocatalyst comprises the following raw material steps:
1) mixing ferric nitrate or hydrated ferric nitrate (Fe (NO)3·9H2O)3Nickel nitrate (Ni (NO)3·6H2O)3Adding urea and distilled water, and stirring for more than 1 h; the molar ratio of iron to nickel is 1: 2.5-1: 3.5; excess of urea and distilled water;
2) immersing melamine sponge into the solution obtained in the step 1), and aging in air for more than 5 hours;
3) putting the aged melamine sponge obtained in the step 2) into an oven for drying (drying condition: 80-130 ℃ for 5-24 h.
4) Carbonizing the product obtained in the step 3) in nitrogen, wherein the carbonization conditions are as follows: 900 plus or minus 100 ℃ for 1-3 h; especially the heating speed is 3-15 ℃/min;
5) grinding the product obtained in the step 4) into powder;
(2) construction of devices
2-1) adding the synthesized oxygen evolution electrocatalyst into a solvent comprising ethanol and the like, adding a naphthol solution as an adhesive, and performing ultrasonic treatment for more than 15 min;
2-2) preparing a Pt/C hydrogen evolution electrocatalyst; or prepared by the same method as the step 1);
2-3) dripping the product obtained in the step 2-1) on the gold-sprayed conductive glass by a dripping method (the purpose of gold spraying is to enhance the conductivity), and obtaining an oxygen evolution electrode;
2-4) dripping the product obtained in the step 2-2) on a copper foil in a dripping mode to obtain a hydrogen evolution electrode;
2-5) using PTFE film as diaphragm and packaging film between cathode and anode, using porous cellulose film as water supply source and proton exchange film, assembling porous foam thermal insulation layer and oxygen and hydrogen evolution electrode to obtain the photoelectrocatalysis device.
2. Use of a device according to claim 1, wherein the oxygen-evolving, hydrogen-evolving electrode is supplied with electric power using solar cells comprising cascaded GaInP2The GaAs/Ge solar cell can focus sunlight irradiating the electrode to 11.23 suns, the illumination on the solar cell is 1 sun, namely, the efficiency of generating hydrogen by sunlight is 20.1%, and the efficiency of generating clean water by light and heat is 93.5%.
CN202011100344.1A 2020-10-15 2020-10-15 Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy Pending CN112593246A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115172769A (en) * 2022-07-29 2022-10-11 华南理工大学 Self-supporting microbial fuel cell anode and preparation method and application thereof
CN115228483A (en) * 2022-07-12 2022-10-25 远景动力技术(江苏)有限公司 Catalyst for synthesizing carbon nano-tube and its application

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101608316A (en) * 2009-07-27 2009-12-23 新奥科技发展有限公司 A kind of device for producing hydrogen through decomposing water
CN109052359A (en) * 2018-08-06 2018-12-21 中国科学技术大学 Three-dimensional carbon material and preparation method thereof, lithium metal combination electrode and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101608316A (en) * 2009-07-27 2009-12-23 新奥科技发展有限公司 A kind of device for producing hydrogen through decomposing water
CN109052359A (en) * 2018-08-06 2018-12-21 中国科学技术大学 Three-dimensional carbon material and preparation method thereof, lithium metal combination electrode and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115228483A (en) * 2022-07-12 2022-10-25 远景动力技术(江苏)有限公司 Catalyst for synthesizing carbon nano-tube and its application
CN115228483B (en) * 2022-07-12 2023-11-14 远景动力技术(江苏)有限公司 Catalyst for synthesizing carbon nano tube and application thereof
CN115172769A (en) * 2022-07-29 2022-10-11 华南理工大学 Self-supporting microbial fuel cell anode and preparation method and application thereof

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Application publication date: 20210402