CN100341188C - Hydrogen removing device for boron compound fuel cell - Google Patents

Hydrogen removing device for boron compound fuel cell Download PDF

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Publication number
CN100341188C
CN100341188C CNB031298567A CN03129856A CN100341188C CN 100341188 C CN100341188 C CN 100341188C CN B031298567 A CNB031298567 A CN B031298567A CN 03129856 A CN03129856 A CN 03129856A CN 100341188 C CN100341188 C CN 100341188C
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CN
China
Prior art keywords
boron compound
fuel
fuel cell
hydrogen
gas
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Expired - Fee Related
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CNB031298567A
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Chinese (zh)
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CN1549381A (en
Inventor
曺泰熙
朴明碩
李明浩
金鐵焕
黄龍俊
許成根
高承兌
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LG Electronics Tianjin Appliances Co Ltd
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LG Electronics Tianjin Appliances Co Ltd
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Priority to CNB031298567A priority Critical patent/CN100341188C/en
Publication of CN1549381A publication Critical patent/CN1549381A/en
Application granted granted Critical
Publication of CN100341188C publication Critical patent/CN100341188C/en
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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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

The present invention discloses a hydrogen removing device of a boron compound fuel cell, which belongs to the combination of a fuel cell and a residue treating device. The device comprises an anode supplying a boron compound stored in a fuel tank to a cell stack and a cathode supplying air to the cell stack. In the fuel cell obtaining power from the chemical reaction of the supplied boron compound and the air, a gas-liquid separator removing hydrogen in fuel is arranged on a fuel recovery pipe. Thus, the phenomenon of pressure increase in the fuel caused by the hydrogen is prevented.

Description

The boron compound fuel cell
Technical field
The invention relates to fuel cell and handle combining of residual thing device, more detailed is the boron compound fuel cell that improves fuel cell power generation efficient about the hydrogen in the eliminating fuel.
Background technology
Fuel cell is the device that the energy in the fuel is directly changed into electric energy, and relevant technology is open.These fuel cells are arranged on anode and negative electrode the both sides of polyelectrolyte usually.Carry out the electrochemical oxidation reactions of the hydrogen in the fuel on the anode (oxidizing electrode or fuel electrodes), carry out the electrochemical reducting reaction of the oxygen in the oxidant on the negative electrode (reducing electrode or air pole).At this moment electronics dislocation generation.
The hydrogen that supplies in these fuel cells is liquefied natural gas (LNG), liquefied petroleum gas (LPG), methyl alcohol (CH 3OH), hydrocarbon series (CH series) such as gasoline, fuel is crossed at the reformer back warp and is taken off sulphur process → reforming reaction → hydrogen cleaning leaching process, and with the hydrogen (H that extracts 2) use with the form of gaseous state.Perhaps the hydrogen in the fuel cell is with solid-state BH 4 -Form with liquid state provides, and directly is used as boron compound fuel cell (BFC) mode of fuel.
The fuel cell of above-mentioned BFC mode has following advantage.Fuel cell does not use reformer, directly supplies with liquid BH and adopt on the positive pole of battery pile 4 -Mode carry out reforming reaction.Therefore do not need reformer, so can simplify all processes.
But, use BH 4 -The existing BFC mode fuel cell of fuel has following problem.There are the liquid fuel and the H of gaseous state in the stream of battery pile simultaneously 2So pressure increases.Because it is big that pressure becomes, must strengthen the capacity of the petrolift of fueling.Therefore not only increase manufacturing cost, and volume of battery also becomes big.
Summary of the invention
In order to solve the gaseous state H of battery pile inside 2Increase unnecessary stress problems, therefore, the invention provides a kind of boron compound fuel cell.
In order to achieve the above object, the invention provides the boron compound fuel cell of following characteristics.Comprise supplying to the anode of battery pile, air is supplied to the negative electrode of battery pile, in the chemical reaction of supplying with boron compound and air, obtain in the fuel cell of electric power, possess the gas-liquid separator of getting rid of hydrogen in the fuel being stored in boron compound in the tanks.
Described boron compound fuel cell, its boron compound are liquid BH 4 -
Described boron compound fuel cell, its gas-liquid separator is by the spatial portion that possesses a certain size in the inboard, and possess the cylinder-shaped body of fuel inlet and fuel outlet in both sides and be formed on above the cylinder-shaped body and constitute to the hydrogen discharge pipe that hydrogen is discharged in the outside.
Described boron compound fuel cell, its gas-liquid separator is provided with on recovery pipe.
She Ji boron compound fuel cell is that the gas-liquid separator of getting rid of hydrogen is set on recovery pipe like this, so finish the BH of reaction in battery pile 4 -, BO 2 -, 2H 2When the O mixed liquor reclaims through recovery pipe, in gas-liquid separator, isolate BH 4 -, BO 2 -, 2H 2Hydrogen in the O mixed liquor.Therefore, when supplying with the fuel that is recovered in the tanks in the battery pile, only supply with and got rid of the liquid fuel of hydrogen, so can prevent the phenomenon that strengthens cell internal pressure because of hydrogen.
Description of drawings
Fig. 1 is a simple structural representation of the present invention.
Fig. 2 is the generalized section of the single battery structure of memory of the present invention.
Fig. 3 is the sectional front view of gas-liquid separator of the present invention.
The explanation of major part symbol among the figure:
10 battery pile, 12 anodes
13 negative electrodes, 20 tanks
100 gas-liquid separators, 101 spatial portions
101a fuel inlet 101b fuel outlet
102 bodies, 103 hydrogen discharge pipes
The P pump
Embodiment
Following with reference to drawings and Examples to the detailed description of the invention.
As shown in Figure 1, fuel cell 1 possesses storing liquid BH in a side of the battery pile 10 that produces electric power 4 -Tanks 20, be connected fuel supply pipe 30 and recovery pipe 40 on the anode of tanks 20 and battery pile 10, and the petrolift 50 of suction of fuel be set on the above-mentioned fuel supply pipe 30.
Connect air supply pipe 60 and air discharge pipe 70 on the negative electrode of above-mentioned battery pile 10, and the air pump 80 of suction air is set on the air supply pipe 60.
The gas-liquid separator 100 of eliminating hydrogen from the fuel of 10 li discharges of battery pile is set on the above-mentioned recovery pipe 40.
Above-mentioned battery pile 10 is to be formed by the single battery that produces electrochemical reaction, and perhaps stacked a plurality of single batteries form with the screw assembling.
As shown in Figure 2, single battery is made of membrane-electrode set 14, bipolar plates 15, collector plate 16,17.Membrane-electrode set 14 is that the anode 12 of diffusion gas and both sides that negative electrode 13 is combined in dielectric film 11 form.Bipolar plates 15 is close to the both sides of above-mentioned membrane-electrode set 14, and forms fuel gas and oxygenous stream on anode 12 and negative electrode 13. Collector plate 16,17 is arranged on the both sides formation anode 12 of bipolar plates 15 and the collector electrode of negative electrode 13.
The dielectric film 11 of above-mentioned membrane-electrode set 14 is the amberplexes that formed by macromolecular material, the Nafion film that its representational and commercial dielectric film 11 is produced by E.I.Du Pont Company (Duponlnc), and, transmit hydrionic anti-simultaneously block at dielectric film and contact with hydrogen.Anode 12 and negative electrode 13 are the supporters that support platinum (Pt) Catalytic Layer, and porous carbonized paper or carbonized cloth are combined in the structure of dielectric film 11 both sides.
Bipolar plates 15 is by absorbing and storage BH 4 -, BO 2 -, 2H 2The hydrogen-storing alloy of the gaseous hydrogen in the O mixed liquor forms, and a plurality of flow passage groove 15a of certain depth are arranged on the medial surface of bipolar plates.So BH 4 -, BO 2 -, 2H 2O mixed liquor and air are separately along being close to the flow path that forms on positive pole 12 and the negative pole 13.
Collector plate 16,17 should be that conductivity is good, decay resistance strong and the hydrogen that can not weaken.Specifically be to use titanium, stainless steel, copper etc. can satisfy any of above-mentioned requirements.
Gas-liquid separator 100 is by the spatial portion that possesses a certain size in the inboard, and possess the simplified shape body 102 of fuel inflow entrance 101a and fuel outlet 101b in both sides and be formed on above the cylinder-shaped body 102 and constitute to the hydrogen discharge pipe 103 that hydrogen is discharged in the outside.
Below, the operational effect of the fuel cell that possesses hydrogen remover of the present invention is described.
If the operator opens the switch of fuel cell 1, control part (not shown) is according to predefined control program operation petrolift 50, by the BH of fuel supply pipe 30 liquid state of 20 li in fueling jar in the anode of battery pile 10 4 -The air pump 80 of control part running meanwhile is by air supply pipe 60 13 li air supplies of negative pole to battery pile 10.
As mentioned above, supply to the BH of the liquid state of 10 li of battery pile 4 -Flow path in the flow passage groove 15a, and on the anode 12 of membrane-electrode set 14 overall diffusion, and carry out the electrochemical oxidation of hydrogen.Air flows along the flow passage groove 15a of oxygen-containing gas, and on the negative electrode 13 of membrane-electrode set 14 overall diffusion, and carry out the electrochemical reduction of oxygen.And the electronics that at this moment produces generating.At this moment the electricity of Chan Shenging gathers the energy that becomes use on collector plate 16,17.
At this moment reaction equation is as follows.
BH 4 -+2O 2-→BO 2 -+2H 2O E 0＝1.64V
Supply to 10 li of battery pile and along the liquid BH of the flow path of battery pile 10 inside as above-mentioned 4 -In contain gaseous state H 2But above-mentioned H 2Gas is separated through the gas-liquid separator on the recovery pipe 40 100 time, discharges to the outside through hydrogen discharge pipe 103 afterwards.Therefore 20 of tanks reclaim and have got rid of BH 4 -, BO 2 -, 2H 2The liquid fuel of the hydrogen of O mixed liquor, and supply with above-mentioned liquid fuel for 10 li to battery pile again.So fueling under the optimum state that does not have pressure to increase.

Claims (4)

1. boron compound fuel cell, comprise and supply to the anode of battery pile being stored in boron compound in the tanks, air is supplied to the negative electrode of battery pile, it is characterized in that in the chemical reaction of supplying with boron compound and air, obtaining in the fuel cell of electric power, possess the gas-liquid separator of getting rid of hydrogen in the fuel.
2. boron compound fuel cell according to claim 1 is characterized in that above-mentioned boron compound is liquid BH 4 -
3. boron compound fuel cell according to claim 1, it is characterized in that above-mentioned gas-liquid separator is by the spatial portion that possesses a certain size in the inboard, and possess the cylinder-shaped body of fuel inlet and fuel outlet in both sides and be formed on above the cylinder-shaped body and constitute to the hydrogen discharge pipe that hydrogen is discharged in the outside.
4. boron compound fuel cell according to claim 1 is characterized in that gas-liquid separator is provided with on recovery pipe.
CNB031298567A 2003-05-20 2003-05-20 Hydrogen removing device for boron compound fuel cell Expired - Fee Related CN100341188C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031298567A CN100341188C (en) 2003-05-20 2003-05-20 Hydrogen removing device for boron compound fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031298567A CN100341188C (en) 2003-05-20 2003-05-20 Hydrogen removing device for boron compound fuel cell

Publications (2)

Publication Number Publication Date
CN1549381A CN1549381A (en) 2004-11-24
CN100341188C true CN100341188C (en) 2007-10-03

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492741A (en) * 1983-12-20 1985-01-08 Struthers Ralph C Boron monoxide-hydrogen peroxide fuel cell
US5804329A (en) * 1995-12-28 1998-09-08 National Patent Development Corporation Electroconversion cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492741A (en) * 1983-12-20 1985-01-08 Struthers Ralph C Boron monoxide-hydrogen peroxide fuel cell
US5804329A (en) * 1995-12-28 1998-09-08 National Patent Development Corporation Electroconversion cell

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