CN105720186B - A kind of carbon nano-fiber/carbon/carbon-copper composite material and its application as thermal cell energy conversion device - Google Patents
A kind of carbon nano-fiber/carbon/carbon-copper composite material and its application as thermal cell energy conversion device Download PDFInfo
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Abstract
The invention discloses a kind of carbon nano-fiber/carbon/carbon-copper composite material and its as the application of thermal cell energy conversion device, firstly, carrying out grinding process to copper sheet surface, the copper sheet material of high-ratio surface is obtained, carbon nano-fiber is had to contact well with copper, is conducive to thermally conductive；On copper surface, growth carbon nano-fiber obtains carbon nano-fiber/copper sheet composite material again.The carbon nano-fiber of this method growth has very high absorptivity in intimate full sunlight wave band, solar radiant energy can be converted to thermal energy；And copper-based bottom has preferable thermal conductivity, and the heat that carbon nano-fiber absorbs can be quickly conducted to the semi-conductor thermoelectric material of thermal cell, integrated solar-thermal cell device realizes efficient solar-electrical energy conversion.There is good prospects for commercial application and basic scientific research to be worth for the invention.
Description
Technical field
The present invention relates to composite material preparation and thermal cell energy conversion device technical fields, and in particular to a kind of carbon is received
Rice fiber/carbon/carbon-copper composite material and its application as thermal cell energy conversion device.
Background technique
In recent years, as the imbalance between energy resource supply and economic development highlights, worldwide energy crisis with
Environmental pollution is got worse, and " carbon reduction " and to seek clean energy technology be countries nowadays without unconcerned subject under discussion.Solar energy
It is a kind of cleaning, the reproducible energy, has a wide range of applications in people's daily life, work and become the ideal energy and select
It selects.This is firstly the need of the form converted solar energy into as electric energy or thermal energy, i.e. photovoltaic type and the conversion of photo-thermal type solar energy.
Traditional photo-thermal type solar power generation refers to by collecting solar thermal energy, provides steam by heat-exchanger rig, in conjunction with
Steam turbine generator technique reaches power generation purpose.Turn although this method can substantially reduce cost for solar power generation and improve solar energy
Efficiency is changed, but generally requires complicated device systems, so that application is very restricted.In recent years, using efficient
The semi-conductor thermoelectric material of rate directly absorbs solar energy (selective absorbing infrared band spectrum) and carries out thermoelectric energy conversion or suction
Receiving photovoltaic solar cell cogeneration reduces cost of electricity-generating to improve solar conversion efficiency.By carbon nano-fiber/copper sheet heat
Battery, which connects to use with photovoltaic cell, also can further improve solar energy photoelectric conversion efficiency.
Thermoelectric material is that one kind can make two kinds of heat and electricity not similar shape under the assistance without other specific external force or device
The functional semiconductor material that the energy of state is mutually converted.Thermal cell is to realize that thermal energy and electric energy are straight based on semi-conductor thermoelectric material
Connect the device mutually converted.Because its own with it is firm in structure it is reliable, size is small, noiseless, the service life is long, it is pollution-free, can be accurate
Many advantages, such as control, causes the extensive concern of scientific circles and industry.Improve the solar energy thermal-to-electric energy conversion of thermal cell
Efficiency, it is necessary to which the heat absorbing end and radiating end of thermal cell keep the temperature difference as big as possible.Except the design factor of thermoelectric material itself
(such as thermal conductivity) outside, heat absorbing end should collect the radiation energy of sunlight as far as possible and pass to thermal cell rapidly；" cold end " is answered
The waste heat of thermal cell is quickly disseminated in the hot-fluid carrier of surrounding as far as possible, keeps lower temperature.It would therefore be highly desirable to prepare one
Kind thermal cell energy conversion device, makes the heat absorbing end of the thermal cell and radiating end thermal conductivity all with higher；Meanwhile it absorbing heat
End will absorption solar energy as efficient as possible, to reach highest thermoelectric energy transfer efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of carbon nano-fiber/carbon/carbon-copper composite material and its as thermal cell energy converter
The application of part is prepared for carbon nano-fiber/carbon/carbon-copper composite material by chemical vapour deposition technique, and as the energy of thermal cell
Energy converter part reaches highest thermoelectric energy transfer efficiency but also with high thermal conductivity while efficient absorption solar energy.
To achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of carbon nano-fiber/carbon/carbon-copper composite material, the composite material include Copper substrate layer and are grown in Copper substrate layer one
One side surface of the carbon nano-fiber layer on side surface, the Copper substrate layer growth carbon nano-fiber has groove structure, described
Carbon nano-fiber growth is filled in the groove；The carbon nano-fiber is linear carbon nano-fiber, carbon nano-fiber layer
With a thickness of 5-10 μm.
The groove structure refers to multiple groove parallel arrangements in Copper substrate layer surface, and groove spacing is 20-30 μm.
Absorptivity >=99.5% of the carbon nano-fiber layer, Copper substrate layer thermal conductivity with higher (~400W/
MK), the solar heat that carbon nano-fiber absorbs can be transferred to rapidly to the thermo-electric converting material of thermal cell.Carbon Nanowire
Tie up 4~8g/m of surface density2, thermal conductivity >=320W/mK of the carbon nano-fiber/carbon/carbon-copper composite material perpendicular to surface direction.
The present invention also provides the preparation methods of above-mentioned carbon nano-fiber/carbon/carbon-copper composite material, and this method comprises the following steps:
(1) preparation of Copper substrate layer surface groove structure:
The figure with groove structure is formed by the method for coated protective coating on a side surface of Copper substrate layer, so
Afterwards in FeCl3It is performed etching in solution, forms the Copper substrate layer with groove structure；The protective coating is photoresist, etching
FeCl used3The concentration of solution is 0.1~3mol/L, and etch period is 1~10 minute；By control protective coating width,
Etching solution concentration and etch period can control size (groove spacing and the groove of the groove structure of Copper substrate layer surface
Depth).
(2) Copper substrate layer surface roughening treatment: there will be groove structure by the method that surface oxidation or sand paper are polished
Copper substrate layer surface (without protective coating covering part) roughening, make 3~7 μm of its roughness；
The roughness of Copper substrate layer surface can be regulated and controled when surface oxidation by control partial pressure of oxygen, temperature and time,
The method of preferred surface oxidation are as follows: in purity oxygen and/or air atmosphere or oxygen and inert gas (Ar or N2) mixing
In gas, Copper substrate is heated to 300-1000 DEG C, heating time is 20min-10 hours.
(3) Copper substrate layer surface grows carbon nano-fiber layer:
The Copper substrate layer removal protective coating of roughened processing is placed on to the life that nano wire is carried out in CVD reaction chamber
It is long, growth conditions are as follows: air pressure 500mbar, 250 DEG C of temperature, growth time 10-20 minutes；After growth, reactor is taken out true
Sky is to 1 × 10-2Mbar is warming up to 800 DEG C of annealing, and annealing time is 1 hour, to grow carbon Nanowire in Copper substrate layer surface
Layer is tieed up, the carbon nano-fiber/carbon/carbon-copper composite material is obtained.
Using the carbon nano-fiber/carbon/carbon-copper composite material as the energy conversion device of thermal cell, the thermal cell energy
Switching device is the device with heat absorbing end and radiating end, and its heat absorbing end the amount of absorbing solar energy and can be transferred to heat dissipation
It holds, then gives the energy to the thermoelectric material of thermal cell by radiating end.The energy that composite material of the present invention is used for thermal cell is turned
When parallel operation part, carbon nano-fiber layer absorbs sunlight and is converted to after thermal energy is transferred to copper-based bottom, is transmitted further in thermal cell
Thermoelectric material produces electricl energy.
The thermal cell is formed by two electrodes and the thermoelectric material being set between two electrodes, with the thermal cell energy
When energy converter part assembles, an electrode of thermal cell is as hotter side electrode, another electrode is as cold terminal electrodes；The energy
The assembling mode of switching device and thermal cell are as follows: using carbon nano-fiber layer as heat absorbing end, directly the amount of absorbing solar energy or
Heat is absorbed by photovoltaic cell；Using copper-based bottom as radiating end, and by Dielectric film layers realize with the hot end of thermal cell/
The connection of cold terminal electrodes.
Design philosophy of the present invention is as follows:
Carbon nano-fiber/carbon/carbon-copper composite material prepared by the present invention is highly suitable as light- heat transfer/conveying material, improves
Optical-electronic energy conversion efficiency, this is exactly basic point of departure of the invention.Carbon nano-fiber layer not only will expeditiously absorb the sun
Luminous energy is converted to thermal energy, and needs expeditiously to pass out the thermal energy of generation, could further be converted to electric energy.Cause
This, needs carbon fiber layer photothermal conversion efficiency with higher and heat conduction efficiency it is necessary to control the thickness of carbon nano-fiber layer
Reinforce heat-conducting effect with the contact area of increase carbon fiber layer and Copper substrate.The groove pattern structure that copper surface corrosion goes out can be with
Increase the contact area of itself and carbon nano-fiber layer, the depth of figure, temperature/time of chemical vapor deposition can regulate and control carbon fiber
Tie up the thickness of layer.It was found that, heating conduction sharply declines, as caused by thermal resistance when fiber layer thickness is more than 25 μm
The temperature difference is greater than 40 DEG C, and the solar energy that carbon fiber layer absorbs cannot effectively be transferred to thermoelectric material generation electricity after being converted to thermal energy
Can, substantially reduce solar energy-thermo-electrically transfer efficiency.When carbon fiber layer is excessively thin, surface density decline, Solar thermal conversion
Efficiency reduces.Consider the thickness of the preferred carbon nano-fiber layer of factors above in 5-10 μ m simultaneously.
After above step, carbon Nanowire need to not be grown in composite substrate with the methods of magnetron sputtering, arc ion plating
Deposition~50nm high-termal conductivity Dielectric film layers (such as AlN) on the side of dimension, then well connect with thermoelectric energy converting material
Touching.When link block figure thermal cell, heat conductive silver glue, high thermal conductivity silica gel or the scolding tin with special composition can be directly used,
The hotter side electrode (such as aluminium) of thermal cell is connected by Dielectric film layers with copper-based bottom.It, can when connecting film-type thermal cell
With template successively deposit metal electrodes (hotter side electrode) and semi-conductor thermoelectric material on copper-based bottom；The cold terminal electrodes of thermal cell
Above-mentioned similar approach can be used, there are the radiating ends such as the silicon wafer, metal aluminium flake or copper sheet of Dielectric film layers to be connected with growth.Lead to again
It crosses air-cooled or recirculated water cooling method and the cold terminal electrodes of thermal cell is maintained at lower temperature.
Carbon nano-fiber/copper sheet composite material can be used for photovoltaic/thermoelectricity composite battery middle layer, help thermal cell
The waste heat generated when absorbing the infrared band solar energy and photovoltaic cell capable of generating power that photovoltaic cell cannot be absorbed and utilized is sent out
Electricity further increases optical and thermal-electric flux conversion efficiency.
The present invention has the beneficial effect that:
1, the copper sheet composite substrate in unilateral growth carbon nano-fiber is prepared, and advanced optimizes growth conditions, regulates and controls carbon
Structure, density, thickness and pattern of nanofiber etc. increase the contact area of carbon nano-fiber and copper sheet.
2, the present invention is logical in order to realize that preparing the purpose that high efficiency absorbs solar energy and high heat conductance component is studied
It crosses chemical vapour deposition technique and is prepared for carbon nano-fiber/carbon/carbon-copper composite material, and be successfully applied to the conversion of thermal cell energy
Device, thereby completing the present invention.
Detailed description of the invention
Fig. 1 is carbon nano-fiber/carbon/carbon-copper composite material structural schematic diagram prepared by embodiment 1.
Fig. 2 is photovoltaic/photo-thermal composite battery structural schematic diagram.
Fig. 3 is solar energy optical-thermal battery structure schematic diagram.
Fig. 4 is that solar spectral separation utilizes structural schematic diagram.
Fig. 5 composite substrate/thermal cell attachment structure schematic diagram.
In figure: 1- Copper substrate layer；2- carbon nano-fiber layer；3- Dielectric film layers；4- hotter side electrode；5- thermoelectric material；51-
P-type semiconductor；52-N type semiconductor；6- cold terminal electrodes；7- Dielectric film layers；8- thermal cell radiating end；9- solar battery；
10- energy conversion device；11- scolding tin/heat-conducting glue.
Specific embodiment
The content of present invention is further explained and described below by way of specific embodiment, but embodiment is understood not to pair
The limitation of the scope of the present invention.
The method preparation that surface treatment is first passed through in the present invention has the Copper substrate material of high-specific surface area, then copper-based
Body surface is looked unfamiliar long carbon nano-fiber.The surface density and thickness of carbon nano-fiber can be adjusted by control growth conditions.Face is close
Degree is determined by the degree of roughness on copper sheet surface, and thickness can be regulated and controled by growth time.Specifically, surface is more smooth, nanometer
The density of line is lower, will be unable on the copper sheet of mirror finish growth nanowire, if copper sheet surface roughness reach 5 μm with
On, so that it may grow very fine and close nano wire.The thickness of nano wire layer is directly proportional with growth time, if to reach 5~
10 μm of thickness, growth time are about 10-20 minutes.It was found that, blocked up carbon nano-fiber layer is for absorbing solar energy
Optical and thermal conversion not only has no obvious help, but also will increase thermal resistance, reduces hot-fluid efficiency of transmission.It is therefore preferable that carbon nano-fiber
The thickness of layer is at 5-10 μm.
It was found that, although carbon nano-fiber has good extinction effect, due to the open structure of itself, carbon
The heating conduction of layers of nanofibers is bad.Starting point of the invention is to be based on making full use of carbon nano-fiber close to all band sun
The light- heat transfer characteristic of spectrum and the high thermal conductivity of Copper substrate convert solar energy into heat and are quickly conducted to thermal cell production
Raw electric energy.Therefore, the side of surface treatment is utilized before growing carbon nanocoils to improve the heating conduction of carbon nano-fiber layer
Method obtains the Copper substrate of high-specific surface area, to increase contact of the copper with carbon nanomaterial, to improve its thermal conductivity, specific method
It include: 1. certain figure to be formed by the method for coated protective film (such as photoresist) on copper, then in FeCl3In solution into
Row etching, forms the copper surface with certain groove pattern structure, carbon Nanowire is regulated and controled by the depth of copper surface groove
Tie up the thickness of layer；2. on this basis, by the method for surface oxidation or utilizing the method for sand paper polishing by its rough surface
Change.It, can be in purity oxygen, the O of air or different partial in order to obtain rough surface2/ Ar or O2/N2Mixed gas
In.Heating temperature is 300-1000 DEG C, and heating time is 3-10 hours, and surface roughness can heat temperature by gas componant
Degree and heating time control.If polished with sand paper, it is thick to obtain different surfaces to can use the sand paper of different roughness
Rugosity.
Embodiment 1
The present embodiment carbon nano-fiber/carbon/carbon-copper composite material preparation process is as follows:
(1) coated photoresist forms the figure with groove structure on a side surface of Copper substrate layer, then in 1mol/
The FeCl of L3It is etched 5 minutes in solution, forms the Copper substrate layer that a side surface has groove structure；20-30 μm of groove spacing is recessed
About 8 μm of slot.
(2) in air atmosphere, the Copper substrate with groove structure is heated to 485 DEG C, heating time is 20 minutes, is made
The part roughening that Copper substrate layer surface does not have photoresist to protect, roughness are 3~7 μm；
(3) the Copper substrate layer removal photoresist of surface roughening is placed on to the growth that nano wire is carried out in CVD reaction chamber,
Growth conditions are as follows: air pressure 500mbar, 250 DEG C of temperature, growth time 15 minutes；After growth, reactor is evacuated to 1
×10-2Mbar is warming up to 800 DEG C of annealing, and annealing time is 1 hour, so that carbon nano-fiber layer is grown in Copper substrate layer surface,
Obtain the carbon nano-fiber/carbon/carbon-copper composite material.
As shown in Figure 1, raw in groove on its Copper substrate layer 1 of carbon nano-fiber/carbon/carbon-copper composite material manufactured in the present embodiment
It grows and fills carbon nano-fiber layer 2；The carbon nano-fiber grown is linear carbon nano-fiber.
Absorptivity >=99.5% of carbon nano-fiber layer after tested, 4~8g/m of carbon nano-fiber surface density2, Copper substrate
The solar heat that carbon nano-fiber absorbs can be transferred to rapidly the thermo-electric converting material of thermal cell by layer, and carbon nano-fiber/
Thermal conductivity >=320W/mK of the carbon/carbon-copper composite material perpendicular to surface direction.
Prepared carbon nano-fiber/carbon/carbon-copper composite material is applied to the energy conversion device of thermal cell, with thermal cell
Integrating process it is as shown in Figure 2-5:
Thermal cell by two electrodes and between thermoelectric material form, two one, electrode be used as hot end batteries, use
In absorbing heat, another is as cold terminal electrodes, for the heat that sheds.
Using carbon nano-fiber layer as heat absorbing end, directly the amount of absorbing solar energy (Fig. 3) or pass through Fresnel Lenses meeting
The poly- radiations heat energy (Fig. 2) for absorbing solar energy, or the infrared band (Fig. 4) in solar spectral is separated by spectroscope；It will
Copper-based bottom realizes the connection with the hotter side electrode of thermal cell as radiating end, and by Dielectric film layers, i.e., in Copper substrate layer
On do not grow on another side surface of carbon nano-fiber with the methods of magnetron sputtering or arc ion plating deposition about 50nm thickness
High thermal conductivity Dielectric film layers (such as AlN), then Dielectric film layers are connect with the hotter side electrode of block-shaped or film-type thermal cell；
For example block shape, by heat conductive silver glue (such as SPI Inc.Conductive Silver Paint), high thermal conductivity silica gel (Goh,
T.J., Seetharamu, K.N., Quadir, G.A, Zainal, Z.A.&Ganeshamoorthy, K.J.Thermal
investigations of microelectronics chip with non-uniform power distribution:
temperature prediction and thermal placement design
Optimization.Microelectronics International 21,29-43,2004) or scolding tin and thermal cell
Hotter side electrode (aluminium or copper etc.) is connected；Connect film-type thermal cell when, then can on dielectric film one layer of metal of Direct precipitation
Electrode material is as thermal cell hotter side electrode, then redeposition p/n type semi-conductor thermoelectric material, such as the Bi (Sb)-of commercial compositional
Te (Se) alloy system.
Thermally conductive good metal (copper, aluminium etc.) can be used in the cold terminal electrodes of thermal cell, the method as described in using document
Prepare (On-chip cooling by superlattice-based thin-film thermoelectrics, Nature
Nanotechnology, 4,235,2009).The cold terminal electrodes of thermal cell reconnect heat sink material (thermal cell radiating end), heat dissipation
End material can make a living silicon wafer, metal aluminum blocks or copper billet etc. with~50nm dielectric film, the cold terminal electrodes of thermal cell and heat dissipation
Material is connected by scolding tin or heat-conducting glue, keeps good contact.Radiating end can pass through air-cooled or recirculated water cooling method
The waste heat of thermal cell is exported.
Carbon nano-fiber/carbon/carbon-copper composite material can be used for photovoltaic/thermoelectricity composite battery.Thermal cell is direct with photovoltaic cell
When physical contact is used in series, the infrared band energy that photovoltaic cell cannot be absorbed and utilized can be directly absorbed and utilized in thermal cell
(when photovoltaic cell is relatively thin, part sunlight can be penetrated)；Thermal cell also can use the waste heat generated when photovoltaic cell work
(by the thermal energy generated in the hot carrier relaxation process of high-energy photons excitation) generates electricity.Carbon nano-fiber/copper sheet is compound
Material can be used as photovoltaic/thermoelectricity composite battery middle layer, effectively absorbs solar energy infrared band or absorbs photovoltaic electric
The waste heat energy that pond generates when generating electricity, passes it to thermal cell, further increases the efficiency of photo-thermal electric flux conversion devices.
Product test
The test of solar energy optical-thermal voltage-to-current
Test method: make light source analogy sunlight using xenon lamp and irradiate, tested using 4200 semiconducting behavior of Keithley
Instrument records thermal cell voltage-current characteristic curve.Size identical application carbon nanocoils/copper sheet composite wood is compared when test
Thermal cell (the hereinafter referred to as plain edition of the coarse common copper sheet of the thermal cell (hereinafter referred to as compound sample) of material, connection surface
Sample), connection be coated with the photo-thermal voltage-to-current of the common thermal cell of graphite (carbon black)/copper sheet (hereinafter referred to as graphite mould sample)
Performance.The height of light source distance sample keeps certain when test, and incident light general power is constant.The radiating end of thermal cell passes through circulation
Cooling water be maintained at 20 DEG C it is constant.The quantity of thermal cell ingredient used in three kinds of samples, size and p/n type thermoelectric material is complete
It equally, is commercial Bi (Sb)-Te type and Bi-Te (Se) type.
Test result: using plain edition sample as reference state, the photo-thermal open-circuit voltage and peak power of graphite mould sample increase
Adduction is unobvious, respectively~3% and~10%；The photo-thermal open-circuit voltage and peak power of the compound sample of the present invention increase by ten
It shows clearly, respectively > 10% He > 30%.
Claims (8)
1. a kind of carbon nano-fiber/carbon/carbon-copper composite material, it is characterised in that: the composite material includes Copper substrate layer and is grown in copper
One side surface of the carbon nano-fiber layer on one side surface of base layer, the Copper substrate layer growth carbon nano-fiber has groove knot
Structure, the carbon nano-fiber growth are filled in the groove；The carbon nano-fiber is linear carbon nano-fiber, carbon nanometer
Fiber layer thickness is 5-10 μm；The preparation method of the carbon nano-fiber/carbon/carbon-copper composite material includes the following steps:
(1) preparation of Copper substrate layer surface groove structure:
The figure with groove structure is formed by the method for coated protective coating on a side surface of Copper substrate layer, is then existed
FeCl3It is performed etching in solution, forms the Copper substrate layer with groove structure；
(2) Copper substrate layer surface roughening treatment: the method polished by surface oxidation or sand paper is by the copper with groove structure
Base layer surface roughening makes 3~7 μm of its roughness；
(3) Copper substrate layer surface grows carbon nano-fiber layer:
The Copper substrate layer removal protective coating of roughened processing is placed on to the growth that nano wire is carried out in CVD reaction chamber, it is raw
Elongate member are as follows: air pressure 500mbar, 250 DEG C of temperature, growth time 10-20 minutes；After growth, reactor is evacuated to 1
×10-2Mbar is warming up to 800 DEG C of annealing, and annealing time is 1 hour, so that carbon nano-fiber layer is grown in Copper substrate layer surface,
Obtain the carbon nano-fiber/carbon/carbon-copper composite material.
2. carbon nano-fiber/carbon/carbon-copper composite material according to claim 1, it is characterised in that: the groove structure refers to more
For a groove parallel arrangement in Copper substrate layer surface, groove spacing is 20-30 μm.
3. carbon nano-fiber/carbon/carbon-copper composite material according to claim 1, it is characterised in that: the carbon nano-fiber layer
Absorptivity >=99.5%, 4~8g/m of carbon nano-fiber surface density2, carbon nano-fiber/carbon/carbon-copper composite material is perpendicular to surface direction
Thermal conductivity >=320W/mK.
4. carbon nano-fiber/carbon/carbon-copper composite material according to claim 1, it is characterised in that: in step (1), the protection
Coating is photoresist, etches FeCl used3The concentration of solution is 0.1~3mol/L, and etch period is 1~10 minute.
5. carbon nano-fiber/carbon/carbon-copper composite material according to claim 1, it is characterised in that: in step (1), pass through control
Width, etching solution concentration and the etch period of protective coating, can control the size of the groove structure of Copper substrate layer surface.
6. carbon nano-fiber/carbon/carbon-copper composite material according to claim 1, it is characterised in that: in step (2), surface oxidation
When regulate and control the roughness of Copper substrate layer surface, the method for surface oxidation are as follows: pure by control partial pressure of oxygen, temperature and time
In oxygen and/or air atmosphere or in oxygen and inert gas mixed gas, Copper substrate is heated to 300-1000 DEG C, is added
The hot time is 20min-10 hours.
7. using carbon nano-fiber/carbon/carbon-copper composite material described in claim 1 as the application of thermal cell energy conversion device, feature
Be: using the carbon nano-fiber/carbon/carbon-copper composite material as the energy conversion device of thermal cell, the carbon of the energy conversion device is received
Rice fibrous layer absorbs sunlight and is converted to after thermal energy is transferred to copper-based bottom, is transmitted further to thermoelectric material in thermal cell and generates electricity
Energy.
8. application of the carbon nano-fiber/carbon/carbon-copper composite material according to claim 7 as thermal cell energy conversion device,
Be characterized in that: the thermal cell is formed by two electrodes and the thermoelectric material being set between two electrodes, with the thermal cell
When energy conversion device assembles, an electrode of thermal cell is as hotter side electrode, another electrode is as cold terminal electrodes；The energy
The assembling mode of energy converter part and thermal cell are as follows: using carbon nano-fiber layer as heat absorbing end, directly the amount of absorbing solar energy or
Person absorbs heat by photovoltaic cell；Using copper-based bottom as radiating end, and the heat with thermal cell is realized by Dielectric film layers
The connection of end/cold terminal electrodes.
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|---|---|---|---|---|
| DE19519978A1 (en) * | 1995-05-24 | 1995-11-09 | Lars Dr Podlowski | Thermoelectric solar collector for heating purposes or electricity generation |
| CN102272940A (en) * | 2008-11-04 | 2011-12-07 | 伊顿公司 | Combined solar/thermal (CHP) heat and power for residential and industrial buildings |
| CN102742032A (en) * | 2009-05-28 | 2012-10-17 | Gmz能源公司 | Thermoelectric system and method of operating same |
| CN103361625A (en) * | 2012-03-31 | 2013-10-23 | 姜辛 | Carbon nanofiber membrane photo-thermal converting material and preparation method thereof |
| WO2014026100A2 (en) * | 2012-08-09 | 2014-02-13 | National Institute Of Aerospace | Solar radiation control and energy harvesting film |
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- 2014-11-30 CN CN201410713439.9A patent/CN105720186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19519978A1 (en) * | 1995-05-24 | 1995-11-09 | Lars Dr Podlowski | Thermoelectric solar collector for heating purposes or electricity generation |
| CN102272940A (en) * | 2008-11-04 | 2011-12-07 | 伊顿公司 | Combined solar/thermal (CHP) heat and power for residential and industrial buildings |
| CN102742032A (en) * | 2009-05-28 | 2012-10-17 | Gmz能源公司 | Thermoelectric system and method of operating same |
| CN103361625A (en) * | 2012-03-31 | 2013-10-23 | 姜辛 | Carbon nanofiber membrane photo-thermal converting material and preparation method thereof |
| WO2014026100A2 (en) * | 2012-08-09 | 2014-02-13 | National Institute Of Aerospace | Solar radiation control and energy harvesting film |
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