JPH05307970A - Liquid fuel cell - Google Patents
Liquid fuel cellInfo
- Publication number
- JPH05307970A JPH05307970A JP4110937A JP11093792A JPH05307970A JP H05307970 A JPH05307970 A JP H05307970A JP 4110937 A JP4110937 A JP 4110937A JP 11093792 A JP11093792 A JP 11093792A JP H05307970 A JPH05307970 A JP H05307970A
- Authority
- JP
- Japan
- Prior art keywords
- methanol
- fuel cell
- liquid fuel
- fuel
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
- H01M8/04022—Heating by combustion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
-
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、起動性のよい液体燃料
電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid fuel cell having good startability.
【０００２】[0002]
【従来の技術】従来の液体燃料電池を図面に基づいて説
明する。図１は従来の液体燃料電池の概念図であり、例
えば燃料としてメタノールを使用した場合の液体燃料電
池を示す。電解質１、例えば、硫酸水溶液、を介して負
極であるメタノール極２と、正極である空気極３が互い
に対向している。そのメタノール極２の背面は、燃料室
４となっており、水タンク８及びメタノールタンク７か
ら所定の濃度に調整混合された水とメタノールからなる
燃料がポンプ９により供給されている。一方、空気極３
の背面には送風機により空気が供給される空気室５を有
している。2. Description of the Related Art A conventional liquid fuel cell will be described with reference to the drawings. FIG. 1 is a conceptual diagram of a conventional liquid fuel cell, for example, a liquid fuel cell when methanol is used as a fuel. A methanol electrode 2, which is a negative electrode, and an air electrode 3, which is a positive electrode, face each other via an electrolyte 1, for example, a sulfuric acid aqueous solution. A back surface of the methanol electrode 2 is a fuel chamber 4, and a fuel consisting of water and methanol adjusted and mixed to a predetermined concentration from a water tank 8 and a methanol tank 7 is supplied by a pump 9. On the other hand, air electrode 3
An air chamber 5 to which air is supplied by a blower is provided on the back surface of the.
【０００３】メタノール極２で、メタノール−水混合溶
液が分解されて炭酸ガスＣＯ2 、水素イオンＨ+ 、電子
ｅ- になる。これを化学式で示せば次の式（１）のよう
になる。At the methanol electrode 2, the methanol-water mixed solution is decomposed into carbon dioxide gas CO 2 , hydrogen ion H + , and electron e − . If this is shown by a chemical formula, it becomes like the following formula (1).
【０００４】[0004]
【化１】 [Chemical 1]
【０００５】さらに、メタノー極２で発生した電子ｅ-
は外部回路６を通って空気極３に達して、前記水素イオ
ンＨ+ 及び空気室５中の酸素と反応して水が生成され
る。生成された水は空気室５から排出される。これを化
学式で示せば次の式（２）のようになる。Further, electrons e − generated in the methano pole 2
Reaches the air electrode 3 through the external circuit 6, and reacts with the hydrogen ions H + and oxygen in the air chamber 5 to generate water. The generated water is discharged from the air chamber 5. If this is shown by a chemical formula, it becomes like the following formula (2).
【０００６】[0006]
【化２】 [Chemical 2]
【０００７】[0007]
【発明が解決しようとする課題】従来、一般に燃料電池
は起動性が他の電源に比べて悪いと言われている。この
原因は主として燃料電池の電池性能が作動温度に大きく
影響されているからである。この傾向は、液体を燃料と
した液体燃料電池において顕著に現れている。例えば、
図４に、温度６０℃と２５℃とした場合のメタノール燃
料電池の単セル性能を、電流密度と電位との関係で示し
た。なお、この場合、電解液を２ＭＨ 2 ＳＯ4 とし、燃
料を２ＭＣＨ3 ＯＨとした。図４から分かるように、単
セル性能で比較した場合、室温（２５℃）で０．４Ｖ、
２４ｍＡ／ｃｍ2 であるのに対して、６０℃では０．４
Ｖ、５９ｍＡ／ｃｍ2 と電流密度が増大しており、室温
では６０℃の場合に比べて半分以下の性能しか得られて
いない。Conventionally, a fuel cell is generally used.
Is said to have poorer startup performance than other power sources. this
The main cause is that the cell performance of the fuel cell is largely dependent on the operating temperature.
Because it has been affected. This tendency is to use liquid as fuel
It has been remarkably shown in the liquid fuel cell. For example,
Figure 4 shows the combustion of methanol at temperatures of 60 ° C and 25 ° C.
Shows the single cell performance of a battery as a function of current density and potential.
It was In this case, the electrolytic solution should be 2 MH 2SOFourAnd burn
Charge 2MCH3OH. As you can see from Figure 4,
When comparing cell performance, 0.4V at room temperature (25 ° C),
24 mA / cm2However, at 60 ° C 0.4
V, 59 mA / cm2And the current density is increasing at room temperature
In comparison with the case of 60 ℃, less than half the performance was obtained.
Not in.
【０００８】即ち、低温では電気化学的な反応が遅く電
流密度が小さくそのために出力電圧が低くなり、高温に
すると電気化学的な反応が早くなり電流密度が大きくそ
のために出力電圧が高くなる。したがって、室温で液体
燃料電池を起動させた場合には、最適な電流密度を得る
ための運転温度に達するまでには時間がかかり、起動性
が悪い。That is, at a low temperature, the electrochemical reaction is slow and the current density is small, so that the output voltage is low, and at a high temperature, the electrochemical reaction is fast and the current density is large, so that the output voltage is high. Therefore, when the liquid fuel cell is started at room temperature, it takes time to reach the operating temperature for obtaining the optimum current density, and the startability is poor.
【０００９】このような問題に対処するために、液体燃
料電池とバッテリーをハイブリッド化し、液体燃料電池
が昇温して所定の性能が得られるまでの不足電力をバッ
テリーで補う方式や、液体燃料電池に電熱ヒータを付加
して強制的に所定の温度まで昇温させる方式が提案され
ている。後者の技術として、例えば、特開平１−１８７
７７６号公報に記載されるものがある。In order to deal with such a problem, a method of hybridizing a liquid fuel cell and a battery and compensating for insufficient power until the liquid fuel cell heats up to a predetermined performance by the battery, or a liquid fuel cell There has been proposed a method of forcibly raising the temperature to a predetermined temperature by adding an electric heater to the. As the latter technique, for example, JP-A-1-187 is available.
Some are described in Japanese Patent No. 776.
【００１０】しかしながら、これらの方式ではバッテリ
ーや電熱ヒータを付加するため装置全体が大型化するこ
とや、これらの補機のために装置が複雑化したり、ま
た、別のエネルギーを要するので、全体としてエネルギ
ーの損失等といった問題がある。そこで本発明は、上記
した問題点に鑑み、構造が簡単でエネルギー損失がほと
んどなく、起動性のよい液体燃料電池を実現することを
目的とする。However, in these systems, the battery and the electric heater are added, so that the size of the entire apparatus becomes large, the apparatus becomes complicated due to these auxiliary machines, and another energy is required. There are problems such as energy loss. In view of the above problems, it is an object of the present invention to realize a liquid fuel cell having a simple structure, almost no energy loss, and good startability.
【００１１】[0011]
【課題を解決するための手段】前記した問題点を解決す
るために、本発明は、燃料の供給を受ける負極と酸素の
供給を受ける正極と該２つの電極間に介挿された電解質
とを有する燃料電池セルと、燃料含有溶液を貯蔵するタ
ンクと、該タンクから前記燃料電池セルの負極に対し、
燃料含有溶液を供給するポンプと、前記正極に連通する
通風路に配設され、外部から酸素を含有する気体を前記
正極に供給する送風機と、前記タンクから前記送風機及
び正極との間の通風路に接続する燃料含有溶液供給路
と、前記タンクから前記燃料含有溶液供給路への燃料含
有溶液の送出を制御するバルブとを備えたことを特徴と
する液体燃料電池とするものである。In order to solve the above-mentioned problems, the present invention provides a negative electrode receiving a fuel supply, a positive electrode receiving oxygen supply, and an electrolyte interposed between the two electrodes. A fuel cell having, a tank for storing a fuel-containing solution, and a negative electrode of the fuel cell from the tank,
A pump that supplies a fuel-containing solution, and a blower that is provided in a ventilation path that communicates with the positive electrode and that supplies a gas containing oxygen from the outside to the positive electrode, and a ventilation path between the tank and the blower and the positive electrode. And a valve for controlling delivery of the fuel-containing solution from the tank to the fuel-containing solution supply passage.
【００１２】燃料電池の起動時において正極に少量の燃
料を直接供給することにより、正極で燃料が直接燃焼し
発熱することになる。このために、起動から短時間で燃
料電池が所定の温度に達し、最適運転温度で運転するこ
とができる。空気極でのメタノールが直接燃焼すること
による反応式は次の式（３）で示される。When a small amount of fuel is directly supplied to the positive electrode at the time of starting the fuel cell, the fuel is directly combusted in the positive electrode to generate heat. For this reason, the fuel cell can reach a predetermined temperature in a short time after startup and can be operated at the optimum operating temperature. The reaction formula by direct combustion of methanol at the air electrode is shown by the following formula (3).
【００１３】[0013]
【化３】 [Chemical 3]
【００１４】[0014]
【実施例１】本実施例１の液体燃料電池を図面に基づい
て説明する。図２は本実施例１の液体燃料電池の概念図
であり、特に燃料としてメタノールを使用した場合の例
を示す。メタノール極１２は、所謂ガス拡散電極により
構成され、ガス供給層及び反応層とからなる。該メタノ
ール極１２に供給された、メタノール水溶液は次の式
（１）の反応を生ずる。Example 1 A liquid fuel cell of Example 1 will be described with reference to the drawings. FIG. 2 is a conceptual diagram of the liquid fuel cell of Example 1, and particularly shows an example in which methanol is used as a fuel. The methanol electrode 12 is composed of a so-called gas diffusion electrode and has a gas supply layer and a reaction layer. The aqueous methanol solution supplied to the methanol electrode 12 causes the reaction of the following formula (1).
【００１５】[0015]
【化４】 [Chemical 4]
【００１６】また、空気極１３においては、送風機によ
り送風された空気に含まれる酸素と、電解質を介して空
気極１３に到達した水素イオンと正負極を負荷等を介し
て短絡することにより移動した電子により次の式（２）
の反応を生ずる。In the air electrode 13, oxygen contained in the air blown by the blower, hydrogen ions reaching the air electrode 13 via the electrolyte, and the positive and negative electrodes are short-circuited via a load or the like to move. The following formula (2)
Cause the reaction.
【００１７】[0017]
【化５】 [Chemical 5]
【００１８】そして、メタノール極１２、空気極１３、
電解質１１から燃料電池セルが構成されている。電解質
１１、例えば、硫酸水溶液、を介して負極であるメタノ
ール極１２と、正極である空気極１３が互いに対向して
いる。水タンク１７及びメタノールタンク１６からはポ
ンプ１８の混合溶液室にそれぞれ電動ポンプを介して連
通されており、この電動ポンプの作動、非作動を制御す
ることにより、開閉バルブとして機能させている。メタ
ノール極１２のガス供給層の背面は燃料室１４となって
おり、ポンプ１８の混合溶液室から燃料室１４へは、ポ
ンプ１８の作動によりメタノール水溶液の燃料が供給さ
れる。上記燃料室１４に供給されるメタノール水溶液は
図示しない流路を通って、再びポンプ１８の混合溶液室
に戻ってくる。そして、メタノール極１２に供給される
メタノール水溶液の濃度が所定の濃度になるように、上
記水タンク１７及びメタノールタンク１６からポンプ１
８の混合溶液室にそれぞれ連通する電動ポンプを制御す
る。Then, the methanol electrode 12, the air electrode 13,
A fuel cell is composed of the electrolyte 11. A methanol electrode 12, which is a negative electrode, and an air electrode 13, which is a positive electrode, face each other through an electrolyte 11, for example, a sulfuric acid aqueous solution. The water tank 17 and the methanol tank 16 are connected to the mixed solution chamber of the pump 18 via electric pumps, respectively, and by controlling the operation and non-operation of the electric pumps, they function as opening / closing valves. The back surface of the gas supply layer of the methanol electrode 12 is a fuel chamber 14, and the fuel of the methanol aqueous solution is supplied from the mixed solution chamber of the pump 18 to the fuel chamber 14 by the operation of the pump 18. The aqueous methanol solution supplied to the fuel chamber 14 returns to the mixed solution chamber of the pump 18 again through a channel (not shown). Then, the pump 1 is supplied from the water tank 17 and the methanol tank 16 so that the concentration of the aqueous methanol solution supplied to the methanol electrode 12 becomes a predetermined concentration.
The electric pumps communicating with the mixed solution chambers 8 are controlled.
【００１９】前記メタノールタンク１６からは、さらに
空気室１５にメタノールを直接供給するための配管が施
されており、液体燃料電池の起動時にバルブ１９が開か
れることにより、空気流とともにメタノールが霧状とな
って空気室１５に供給される。そのために空気極１３で
メタノールが直接燃焼されるので、前記式（３）の発熱
反応が起こり、液体燃料電池が所定の温度、例えば、５
０〜６０℃に達する。この時点で、バルブ１９を閉じ、
液体燃料電池として通常運転を行う。A pipe for directly supplying methanol to the air chamber 15 is provided from the methanol tank 16, and the valve 19 is opened when the liquid fuel cell is started, so that the methanol is atomized together with the air flow. And is supplied to the air chamber 15. Therefore, methanol is directly combusted at the air electrode 13, so that the exothermic reaction of the above formula (3) occurs and the liquid fuel cell is heated to a predetermined temperature, for example, 5
Reach 0-60 ° C. At this point, close valve 19,
Perform normal operation as a liquid fuel cell.
【００２０】上記バルブ１９も電動ポンプにより構成さ
れており、その作動、非作動を制御することにより開閉
バルブとして機能させている。なお、起動時のメタノー
ル供給量の制御は、タイマによって、起動時から上記ポ
ンプを通電する時間を制御することによって行ってい
る。この場合、図示しない温度センサにより電解質１１
または燃料電池のセルの雰囲気温度を検出して、この検
出温度に基づき、該ポンプを作動させる時間を変化させ
るようにしてもよい。なお、本実施例１では、メタノー
ルタンク１６からバルブ１９を介して、空気極１３にメ
タノールを供給しているが、ポンプ１８の混合溶液室か
らバルブ１９を介して、メタノールを供給してもよい。The valve 19 is also composed of an electric pump, and functions as an opening / closing valve by controlling its operation and non-operation. The amount of methanol supplied at the time of startup is controlled by controlling the time during which the pump is energized from the time of startup with a timer. In this case, the electrolyte 11
Alternatively, the ambient temperature of the cell of the fuel cell may be detected, and the time for operating the pump may be changed based on the detected temperature. In the first embodiment, methanol is supplied from the methanol tank 16 to the air electrode 13 via the valve 19, but methanol may be supplied from the mixed solution chamber of the pump 18 via the valve 19. ..
【００２１】このように、本実施例１の液体燃料電池は
従来の液体燃料電池の構成に加えて、メタノールタンク
１６から空気室１５側に配管を敷設しただけのものであ
り、その構成は極めてシンプルなものである。As described above, the liquid fuel cell of Example 1 is the one in which the pipe is laid from the methanol tank 16 to the air chamber 15 side in addition to the structure of the conventional liquid fuel cell, and the structure is extremely high. It's simple.
【００２２】[0022]
【実施例２】本実施例２の液体燃料電池を図面に基づい
て説明する。図３は本実施例２の液体燃料電池の概念図
であり、実施例１における液体燃料電池において、メタ
ノールタンク２６からさらに電解質２１へ配管を付加し
て、メタノールを電解質２１へ供給したものである。他
の構成は実施例１と同じである。Second Embodiment A liquid fuel cell of the second embodiment will be described with reference to the drawings. FIG. 3 is a conceptual diagram of the liquid fuel cell according to the second embodiment. In the liquid fuel cell according to the first embodiment, a pipe is further added from the methanol tank 26 to the electrolyte 21 to supply methanol to the electrolyte 21. .. Other configurations are the same as those in the first embodiment.
【００２３】この液体燃料電池の起動時においては、空
気室２５にバルブ２９を開きメタノールを空気と共に霧
状に供給すると同時に、バルブ３０を開きメタノールを
電解質２１へ供給して、空気極２３でのメタノールの直
接燃焼を行わせて、液体燃料電池を短時間に所定の温度
に昇温させる。以上、本発明の燃料電池は、主に燃料と
してメタノールを用いたものについて説明したが、本発
明はメタノール燃料電池に限定されず、種々の液体燃料
電池に適用できるものである。At the time of starting the liquid fuel cell, a valve 29 is opened in the air chamber 25 to supply methanol in a mist state together with the air, and at the same time, a valve 30 is opened to supply methanol to the electrolyte 21 so that the air cathode 23 Direct heating of methanol is performed to raise the temperature of the liquid fuel cell to a predetermined temperature in a short time. The fuel cell of the present invention has been described above mainly using methanol as a fuel, but the present invention is not limited to the methanol fuel cell and can be applied to various liquid fuel cells.
【００２４】[0024]
【発明の効果】始動時の昇温に要するエネルギー損失が
ほとんどなく、構造が簡単で、短時間で昇温する起動性
のよい液体燃料電池を提供することができる。EFFECT OF THE INVENTION It is possible to provide a liquid fuel cell which has almost no energy loss required to raise the temperature at the time of starting, has a simple structure, and is capable of raising the temperature in a short time with good startability.
【図１】従来のメタノール燃料電池の概念図を示す。FIG. 1 shows a conceptual diagram of a conventional methanol fuel cell.
【図２】本発明の実施例１のメタノール燃料電池の概念
図を示す。FIG. 2 shows a conceptual diagram of a methanol fuel cell of Example 1 of the present invention.
【図３】本発明の実施例２のメタノール燃料電池の概念
図を示す。FIG. 3 shows a conceptual diagram of a methanol fuel cell of Example 2 of the present invention.
【図４】メタノール燃料電池の単セル性能を示す図。FIG. 4 is a diagram showing single cell performance of a methanol fuel cell.
１１，２１ 電解質 １２，２２ メタノール極 １３，２３ 空気極 １４，２４ 燃料室 １５，２５ 空気室 １６，２６ メタノールタンク １７，２７ 水タンク １８，２８ ポンプ １９，２９，３０ バルブ 11,21 Electrolyte 12,22 Methanol electrode 13,23 Air electrode 14,24 Fuel chamber 15,25 Air chamber 16,26 Methanol tank 17,27 Water tank 18,28 Pump 19,29,30 Valve
Claims (1)
受ける正極と該２つの電極間に介挿された電解質とを有
する燃料電池セルと、 燃料含有溶液を貯蔵するタンクと、 該タンクから前記燃料電池セルの負極に対し、燃料含有
溶液を供給するポンプと、 前記正極に連通する通風路に配設され、外部から酸素を
含有する気体を前記正極に供給する送風機と、 前記タンクから前記送風機及び正極との間の通風路に接
続する燃料含有溶液供給路と、 前記タンクから前記燃料含有溶液供給路への燃料含有溶
液の送出を制御するバルブと、 を備えたことを特徴とする液体燃料電池。1. A fuel cell having a negative electrode supplied with fuel, a positive electrode supplied with oxygen, and an electrolyte interposed between the two electrodes; a tank for storing a fuel-containing solution; A pump that supplies a fuel-containing solution to the negative electrode of the fuel cell, a blower that is disposed in a ventilation path that communicates with the positive electrode, and that supplies a gas containing oxygen from the outside to the positive electrode, and from the tank A liquid comprising: a fuel-containing solution supply path connected to a ventilation path between the blower and the positive electrode; and a valve for controlling delivery of the fuel-containing solution from the tank to the fuel-containing solution supply path. Fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4110937A JPH05307970A (en) | 1992-04-30 | 1992-04-30 | Liquid fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4110937A JPH05307970A (en) | 1992-04-30 | 1992-04-30 | Liquid fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05307970A true JPH05307970A (en) | 1993-11-19 |
Family
ID=14548369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4110937A Pending JPH05307970A (en) | 1992-04-30 | 1992-04-30 | Liquid fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05307970A (en) |
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