CN100341183C - Battery pile structure of fuel cell with boron compound as fuel - Google Patents

Battery pile structure of fuel cell with boron compound as fuel Download PDF

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Publication number
CN100341183C
CN100341183C CNB031298451A CN03129845A CN100341183C CN 100341183 C CN100341183 C CN 100341183C CN B031298451 A CNB031298451 A CN B031298451A CN 03129845 A CN03129845 A CN 03129845A CN 100341183 C CN100341183 C CN 100341183C
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China
Prior art keywords
fuel
battery pile
boron compound
fuel cell
hydrogen
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Expired - Fee Related
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CNB031298451A
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Chinese (zh)
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CN1549370A (en
Inventor
李明浩
朴明碩
崔鴻
金鐵焕
高承兌
黄龍俊
許成根
曺泰熙
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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 CNB031298451A priority Critical patent/CN100341183C/en
Publication of CN1549370A publication Critical patent/CN1549370A/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 relates to a cell stack structure of a fuel cell using a boron compound as fuel, which is composed of cells of which the membrane-electrode assemblies are provided with bipolar plates of flow channels at both sides, wherein the bipolar plates are made of hydrogen storage alloys capable of absorbing hydrogen. Thus, when liquid fuel BH4<-> comes into contact with the anode of the cell stack and inwards flows, gaseous H2 is absorbed to the bipolar plates made of the hydrogen storage alloys. Thus, when used for generating power, the cell stack can prevent the phenomenon that the hydrogen increases, pressure inside the cell stack is higher, and the fuel can not be fluently supplied to the cell stack.

Description

Boron compound is the battery pile structure of the fuel cell of fuel
Technical field
The invention belongs to about fuel cell, relate to particularly that a kind of to have the boron compound that the hydrogen of getting rid of in the fuel improves fuel cell power generation efficient be the battery pile structure of the fuel cell of fuel by the which generate electricity by electrochemical reaction of outside fueling and air.
Background technology
Generally, fuel cell is the device that the energy in the fuel is directly changed into electric energy, discloses about his technology.These fuel cells are arranged on anodal and negative pole the both sides of polyelectrolyte usually.Carry out the electrochemical oxidation reactions of the hydrogen in the fuel on anodal (oxidizing electrode or fuel electrodes), carry out the electrochemical reducting reaction of the oxygen in the oxidant on the negative pole (reducing electrode or air pole).At this moment electronics dislocation generation.
Supply to hydrogen in these fuel cells and be hydrocarbon series of fuels such as natural gas, liquefied petroleum gas, methyl alcohol, gasoline and cross at reformer [Reformer] back warp and take off sulphur engineering → reforming reaction → hydrogen and refine engineering and refine, extract hydrogen (H 2) use with the form of gaseous state.Perhaps in the fuel cell liquid BH 4Directly make the BFC mode that is used as fuel.
The fuel cell of BFC mode has following advantage.Fuel cell does not use reformer, adopts and directly supply with liquid BH on the positive pole of Blast Furnace Top Gas Recovery Turbine Unit (TRT) 4 -Mode carry out reforming reaction.Therefore do not need reformer, so can simplify whole systems.
But be to 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 it is big that pressure becomes.Because it is big that pressure becomes, must strengthen the capacity of the petrolift of fueling.Therefore not only increase manufacturing cost, and the volume of machine also becomes big.
Summary of the invention
The present invention for solve that the technical problem that exists in the above-mentioned technology provides with the boron compound be fuel can get rid of the battery pile structure that the fuel battery inside Gaseous Hydrogen improves the fuel cell of generating efficiency.
The technical scheme that the present invention takes for the technical problem that exists in the above-mentioned technology of solution is:
A kind of boron compound is that the battery pile structure of the fuel cell of fuel is that the boron compound that is stored in the tanks is being supplied in the negative electrode of cell pile, air supplied in the positive pole of battery pile, from the chemical reaction of the boron compound supplied with and air, obtain in the fuel cell of electric power, battery pile is made of the stacked battery that has the bipolar plates that possesses flow passage groove to form more than 1, on the both sides of membrane electrode, and its bipolar plates is made with hydrogen-storage alloy by absorbing hydrogen.Fuel is liquid BH 4 -
Advantage of the present invention and good effect are:
Boron compound of the present invention is that the battery pile structure of the fuel cell of fuel is that the battery that the stacked bipolar plates that possesses flow passage groove more than 1 on the both sides by membrane electrode forms constitutes, and makes bipolar plates with the hydrogen-storage alloy that can absorb hydrogen.Therefore liquid fuel BH 4 -Contact negative electrode of cell pile in the time of internal flow, the H of gaseous state 2Being drawn into hydrogen-storage alloy makes on the bipolar plates.So in when generating, can prevent because hydrogen increases the battery pile internal pressure and become big, can not be in battery pile the phenomenon of fueling glibly.
Description of drawings
Fig. 1 is that the boron compound that diagram possesses battery pile of the present invention is the simple structure chart of the fuel cell of fuel.
Fig. 2 is the profile of diagram according to the single battery structure of battery pile of the present invention.
Fig. 3 is the front elevation according to bipolar plates of the present invention.
Explanation for figure major part symbol:
10: battery pile, 22: anodal,
23: negative pole, 24: membrane electrode,
25: bipolar plates, 100: tanks.
Embodiment
Describe the fuel cell stack structure that boron compound of the present invention is a fuel in detail with reference to the embodiment among the figure.
Fig. 1 is that the boron compound that diagram possesses battery pile of the present invention is the simple structure chart of the fuel cell of fuel.
As shown in the figure, the side in the battery pile (10) that produces electric power possesses storing liquid BH 4 -Tanks (100), be connected fuel feed pipe (30) and recovery pipe (40) on the negative pole (23) of tanks (100) and battery pile (10), and the petrolift (300) of suction of fuel be set on the fuel feed pipe (30).
On the negative pole of battery pile (10), connect air supply pipe (50) and air discharge pipe (60), and the air pump (70) of suction air is set on the air supply pipe (50).
Battery pile (10) is to form with the screw assembling with the single battery formation that produces electrochemical reaction or stacked a plurality of single battery.Say as Fig. 2 and to show that single battery is constituted (26) (27) and constituted by membrane electrode (24), bipolar plates (25), collector plate.Membrane electrode (24) is that the positive pole (22) of diffusion gas and both sides that negative pole (23) is combined in dielectric film (21) form.Bipolar plates (25) is close to the both sides of membrane electrode (24), and goes up the stream that forms fuel gas and oxygen-containing gas in anodal (22) and negative pole (23).The both sides that collector plate (26), (27) are arranged on bipolar plates (25) form the collector electrode of positive pole (22) and negative pole (23).
The dielectric film (21) of membrane electrode (24) is the amberplex that is formed by macromolecular material, and the hydrionic anti-simultaneously block of dielectric film transmission contacts with hydrogen.Anodal (22) and negative pole (23) are the supporters of support platinum (Pt) catalyst layer, and porous carbonized paper or carbonized cloth are combined in the structure of dielectric film (21) both sides.
Bipolar plates is by absorbing and storage BH 4 -, BO 2 -, 2H 2The hydrogen-storing alloy of the gaseous hydrogen in the O mixed liquor is made, and a plurality of flow passage groove (31) of certain depth are arranged on the medial surface of bipolar plates.So BH 4 -, BO 2 -, 2H 2O mixed liquor and air are gone up the flow path that forms along being close to positive pole (22) and negative pole (23) separately.
Collector plate (26), (27) should be that conductivity will be got well, corrosion resistance will be got well and the metal of the hydrogen that can not weaken constitutes.Specifically be to use titanium, stainless steel, copper etc. can satisfy any one of above-mentioned requirements.
The action effect of the fuel cell that possesses battery pile structure of the present invention is described.
If the operator opens switch, control part (not shown) is according to predefined control program running petrolift (300), by the BH of fuel feed pipe (30) to the liquid state of negative pole (23) fueling jar (100) lining of battery pile (10) 4 -The air pump (70) of control part running meanwhile is by positive pole (22) air supply of air supply pipe (50) to battery pile (10).Supply to the BH of the liquid state of battery pile (10) lining 4 -Along the flow path of flow passage groove (31) lining, and go up overall diffusion, and carry out the electrochemical oxidation of hydrogen at the negative pole (23) of membrane electrode (24).Air flows along the flow passage groove (32) of oxygen-containing gas, and goes up overall diffusion at the positive pole (22) of membrane electrode (24), and carries out the electrochemical reduction of oxygen.And the electronics that at this moment produces generating.At this moment the electricity of Chan Shenging gathers on collector plate (26), (27) and uses into the energy.
At this moment reaction equation is as follows.
BH 4 -+2O 2→BO 2 -+2H 2O E 0＝1.64V
Supplying to battery pile (10) lining and along the liquid BH of the inner flow path of battery pile (10) 4 -In contain gaseous state H 2H 2Gas is absorbed by the bipolar plates of hydrogen-storing alloy (25), becomes big phenomenon so can prevent by the fuel pressure that flows in the stream of battery pile (10).

Claims (2)

1. battery pile structure that boron compound is the fuel cell of fuel, be that the boron compound that is stored in the tanks is being supplied in the negative electrode of cell pile, air supplied in the positive pole of battery pile, from the chemical reaction of the boron compound supplied with and air, obtain in the fuel cell of electric power, it is characterized in that battery pile is to be made of the battery that the stacked bipolar plates that possesses flow passage groove more than 1 on the both sides of membrane electrode forms, its bipolar plates is made with hydrogen-storage alloy by absorbing hydrogen.
2. boron compound according to claim 1 is the battery pile structure of the fuel cell of fuel, it is characterized in that fuel is liquid BH 4 -
CNB031298451A 2003-05-20 2003-05-20 Battery pile structure of fuel cell with boron compound as fuel Expired - Fee Related CN100341183C (en)

Priority Applications (1)

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CNB031298451A CN100341183C (en) 2003-05-20 2003-05-20 Battery pile structure of fuel cell with boron compound as fuel

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Application Number Priority Date Filing Date Title
CNB031298451A CN100341183C (en) 2003-05-20 2003-05-20 Battery pile structure of fuel cell with boron compound as fuel

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CN1549370A CN1549370A (en) 2004-11-24
CN100341183C true CN100341183C (en) 2007-10-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102437348B (en) * 2011-12-08 2013-11-06 西安交通大学 Non-noble metal-catalyzed polymer fibrous membrane hydroborate fuel cell

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607426A (en) * 1967-12-26 1971-09-21 Gen Electric Fuel cell electrode
EP1067091A2 (en) * 1999-07-05 2001-01-10 Seijirau Suda Hydrogen-generating agent and method for generation of hydrogen using the same
CN1316537A (en) * 2001-03-23 2001-10-10 天津南开戈德集团有限公司 Mg-base hydrogen-bearing alloy material and its preparing process and application
WO2002031897A2 (en) * 2000-10-13 2002-04-18 Energy Conversion Devices, Inc. Fuel cell hydrogen supply systems using secondary fuel to release stored hydrogen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607426A (en) * 1967-12-26 1971-09-21 Gen Electric Fuel cell electrode
EP1067091A2 (en) * 1999-07-05 2001-01-10 Seijirau Suda Hydrogen-generating agent and method for generation of hydrogen using the same
WO2002031897A2 (en) * 2000-10-13 2002-04-18 Energy Conversion Devices, Inc. Fuel cell hydrogen supply systems using secondary fuel to release stored hydrogen
CN1316537A (en) * 2001-03-23 2001-10-10 天津南开戈德集团有限公司 Mg-base hydrogen-bearing alloy material and its preparing process and application

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