WO2011090246A1 - Séparateur pour pile à combustible comprenant un sous-canal - Google Patents

Séparateur pour pile à combustible comprenant un sous-canal Download PDF

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Publication number
WO2011090246A1
WO2011090246A1 PCT/KR2010/005533 KR2010005533W WO2011090246A1 WO 2011090246 A1 WO2011090246 A1 WO 2011090246A1 KR 2010005533 W KR2010005533 W KR 2010005533W WO 2011090246 A1 WO2011090246 A1 WO 2011090246A1
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WO
WIPO (PCT)
Prior art keywords
channel
fuel cell
separator
rib
polymer electrolyte
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Application number
PCT/KR2010/005533
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English (en)
Korean (ko)
Inventor
최갑승
신기수
김형만
황하나
Original Assignee
인제대학교 산학협력단
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Publication of WO2011090246A1 publication Critical patent/WO2011090246A1/fr

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    • 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
    • H01M8/02—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
    • H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
    • 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
    • H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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

Definitions

  • the present invention relates to a polymer electrolyte fuel cell, and more particularly, to a polymer electrolyte fuel capable of improving discharge characteristics of water generated in a lip portion, activating an electrochemical reaction, and improving durability of a membrane-electrode assembly (MEA). It relates to the improvement of the structure of the separator plate applied to the battery.
  • MEA membrane-electrode assembly
  • a polymer electrolyte fuel cell using an electrically insulator and having a hydrogen ion-exchange polymer membrane as an electrolyte is a high-efficiency, pollution-free and noise-free future generation technology that directly converts chemical fuels such as methanol and hydrogen into electrical energy. Compared with the existing internal combustion engine, energy efficiency of more than 1.5 times can be obtained, and it has the advantage of releasing no toxic air pollutants at all.
  • the polymer electrolyte fuel cell is a high output fuel cell with a higher current density than other fuel cells, which operates at temperatures below 100 ° C, has a simple structure, shows fast start-up and response characteristics, and excellent durability. Can be used as a fuel, making it a suitable system as a power source for automobiles.
  • Such a polymer electrolyte fuel cell has a wide range of applications, such as a power source for a pollution-free vehicle, which can be applied as distributed local power generation, military power, spacecraft power, and the like.
  • the study of polymer electrolyte fuel cells first began in 1955 at GE in the United States, and in 1962, Gemini spacecraft Nos. 3 to 12 were used in two miniature 1 kW polyelectrolyte fuel cell stacks. Since then, researches for applying polymer electrolyte fuel cells for civilian use such as fuel cell vehicles have been actively conducted worldwide.
  • FIG. 1 is a plan view showing a meandering flow path shape, which is a typical shape of a conventional separator
  • FIG. 2 is a cross-sectional view illustrating a structure of a polymer electrolyte fuel cell stack to which the separator of FIG. 1 is applied
  • a polymer electrolyte fuel cell PEMFC
  • MEA electrically Membrane-Electrode Assembly
  • an insulator and assembly of a polymer electrolyte membrane and an anode (cathode) with hydrogen ion exchange characteristics and a separator 1a for forming a stack and a gas diffusion layer (GDL) provided between the separator 1a and the membrane-electrode assembly.
  • GDL gas diffusion layer
  • Reference numeral 4 is a catalyst layer constituting the electrode of the fuel cell.
  • the membrane-electrode assembly has a porous anode and a cathode attached to both sides of the polymer electrolyte membrane, and electrochemical oxidation of hydrogen occurs at the anode, and electrochemical reduction of oxygen as an oxidant occurs at the cathode.
  • the separator 1a is generally referred to as a bipolar plate, and has an anode gas channel on one side and an electrode gas channel on the other side, and is a membrane-electrode assembly (MEA).
  • MEA membrane-electrode assembly
  • the separator should have good electrical conductivity, chemical stability, light weight, and good corrosion resistance.
  • the mechanical strength and processability must be good, thin, low cost, and easy to mass production.
  • the material of the separator used is mainly graphite, but in recent years, research on metal separators has been actively conducted.
  • Graphite is most commonly used because of its good corrosion resistance and lightness, but it is difficult to process, brittle, easily broken, and relatively expensive.
  • Metals have good workability, high electrical conductivity, good mechanical strength and low cost, but have poor corrosion resistance and heavy weight compared with graphite.
  • the efficiency of the electrode decreases and causes a decrease in battery performance.
  • the proper size combination between the channel for supplying the reactor gas and the ribs for moving the electrons generated in the electrochemical reaction to the outside it is possible to increase the cell performance by enabling smooth gas supply and electron transfer.
  • 1 is a plan view showing a meandering flow path shape, which is a typical shape of a conventional separation plate, and the existing separation plate includes one or more meandering flow paths and ribs provided between the flow paths.
  • the polymer electrolyte fuel cell mainly carries out mass transfer by convection and diffusion, and crosses the rib portion between the main flow channel 100 and the main flow channel 100 adjacent thereto.
  • the flow of the reaction gas occurs, but when the conventional separation plate (1a) is employed, the utilization rate of the reaction gas is increased because the reaction gas that moves across the lower portion of the rib 110 (rib) cannot be retained for a long time. There is a problem that can not and can not activate the electrochemical reaction.
  • a portion mainly showing a high current density is a rib portion than a main channel portion, and when the width of the rib is wider, The average current density is improved, but the discharge of water generated under the ribs becomes difficult, causing performance degradation due to flooding when used for a long time.
  • the conventional separation plate of the above configuration has a wide gap between the flow channel 100 (main channel) separation plate or gas diffusion layer (2) (GDL)
  • GDL gas diffusion layer (2)
  • the present invention is to solve the above problems, such as parallel type (parellel type), meandering type (serpentine type), pin type (pin type), interdigitated type, etc.
  • the electrochemical reaction is activated by increasing the residence time of the reaction gas, and the water discharge characteristic is improved, thereby flooding by water generated mainly in the rib part of the separation plate.
  • the purpose of the present invention is to provide a separator plate of a polymer electrolyte fuel cell which minimizes the influence and minimizes the internal pressure drop of the separator plate so that the current density distribution can be uniform.
  • another object of the present invention is to be able to narrow the gap between the main flow paths to improve the mechanical strength by solving the stress concentration phenomenon of the separator.
  • the main flow channel through which hydrogen, air or oxygen can move
  • a rib for distinguishing between the main channel and the main channel
  • a separator for a fuel cell comprising a sub-channel for increasing the reaction rate by increasing the water discharge and the residence time of the reaction gas generated in the rib portion.
  • the present invention by-passage connecting the main flow channel (main channel) and the auxiliary flow channel in order to minimize the water discharge and the pressure drop existing in the sub-channel (sub channel) It is characterized in that the further provided.
  • bypass flow passage is formed on the inlet and the outlet side of the flow path pattern.
  • bypass flow passage may be formed at an inlet and an outlet side of the flow path pattern, and additionally, a turn-rib portion.
  • Separation plate for a polymer electrolyte fuel cell characterized in that the main flow passage has a shape of a serpentine type.
  • main flow path is characterized in that it has a parallel (parellel type) shape.
  • the main flow passage is characterized in that it has an interdigitated type (shape).
  • the main flow passage has a shape of a parallel corrugated type.
  • the main flow path is characterized in that it has a shape of a separated interdigitated type (separated interdigitated type).
  • the polymer electrolyte fuel cell the present invention is intended to activate the electrochemical reaction due to the increase in the reaction gas residence time.
  • the present invention is to improve the discharge characteristics of the water generated through the activation of the electrochemical reaction to minimize the flooding effect by the excess water generated mainly in the separation rib (rib) portion, whereby the moisture of the electrolyte membrane It provides the effect of making the current density uniform and making the current density distribution uniform.
  • the present invention provides an effect of activating the electrochemical reaction due to an increase in the residence time of the reaction gas, and improving the mechanical strength by eliminating the stress concentration phenomenon of the separator.
  • the present invention improves the system efficiency by increasing the output per unit area due to the uniform high current density distribution, and at the same time the main flow channel (sub channel) and the sub channel (sub channel) at the same time when manufacturing the separator plate without additional equipment As it can be processed, it is expected to reduce costs and improve productivity.
  • the present invention can be directly applied to the existing machining process and when manufacturing the separator, it is possible to process the main flow channel (sub channel) and the sub flow channel (sub channel) at the same time, the production cost by additional equipment, manpower expansion, etc. As the rise is avoided, cost reduction and productivity improvement are expected.
  • FIG. 1 is a plan view and a partially enlarged view showing a meandering flow path shape which is a typical shape of a conventional separator;
  • FIG. 2 is a cross-sectional view showing the configuration of a polymer electrolyte fuel cell stack to which the separator of FIG. 1 is applied.
  • FIG. 3 is a perspective view showing a separator according to the present invention.
  • FIG. 4 is a plan view and a partially enlarged view illustrating a flow path pattern of the separator of FIG. 3.
  • FIG. 5 is a cross-sectional view showing the configuration of a polymer electrolyte fuel cell to which the separator of FIG. 3 is applied according to the present invention.
  • FIG. 6 is a graph comparing the cell voltage and the inlet and outlet pressure difference in the shape of the main flow passage and the auxiliary flow passage;
  • FIG. 7 to 10 is a schematic view showing a flow path shape applicable to the separator of the present invention
  • Figure 3 is a perspective view showing a separator according to the present invention
  • Figure 4 is a plan view showing a flow path pattern of the separator of Figure 3
  • Figure 5 is a cross-sectional view showing the configuration of a polymer electrolyte fuel cell applied to the separator according to the present invention.
  • the separator plate 1 for a polymer electrolyte fuel cell of the present invention includes a main flow path 100 (main channel) through which hydrogen, air, or oxygen may move; A rib (110) for separating between the main flow path (100) and the main flow path (100); It comprises a sub-flow passage 120 (sub channel) for increasing the reaction rate by increasing the water discharge and the residence time of the reaction gas generated in the rib (110) (rib) portion.
  • bypass flow passage 130a connecting the main flow passage 100 (main channel) and the auxiliary flow passage 120 to minimize water discharge and pressure drop existing in the sub flow passage 120 (sub channel).
  • 130b and 130c by-passage are further provided.
  • the bypass flow path basically includes a bypass flow path 130a formed at the inlet and outlet sides of the flow path pattern, and additionally bypass flow paths 130b and 130c formed at a turn-rib portion. .
  • the turn-rib portion refers to a rib portion located at a portion where the flow path direction is turned (see details B and C of FIG. 3).
  • reference numeral 4 denotes a catalyst layer constituting an electrode of the fuel cell.
  • activation of the electrochemical reaction can be achieved by increasing the residence time of the reaction gas.
  • the main flow path 100 adjacent to the main flow path 100 exemplifies five main flow paths
  • a flow of the reaction gas across the lower part of the ribs 110 (rib) between the main channels 100 occurs, wherein the reaction gas flowing across the lower part of the ribs 110 (rib) is transferred to the auxiliary flow path
  • the long residence time in the sub-channel enhances the utilization of the reaction gas and activates the electrochemical reaction.
  • the pressure of the auxiliary flow passage 120 formed between the main flow passage 100 and the main flow passage 100 is greater than the pressure of the main flow passage 100. It can be seen that the supply gas easily flows from the main flow passage 100 around the auxiliary flow passage 120 to the auxiliary flow passage 120 to be lower, and the supply gas passed to the sub flow passage 120 (sub channel). The residence time is long to improve the utilization of the reaction gas.
  • the separator 1 of the present invention smoothly discharges the water generated in the rib portion 110 (rib) to minimize the performance reduction caused by flooding (flooding).
  • the flow path of the separator is composed of one or more main flow paths 100 (main channel) and ribs 110 (rib), and generally, the reaction gas is based on the same stoichiometric flow rate ratio.
  • the portion which shows a high current density mainly is a rib portion 110 (rib) than the main flow passage portion 100 (main channel) portion, and if the width of the ribs 110 (rib) is wider, the average current density is improved. It is difficult to discharge the water generated in the lower portion of the ribs 110 (rib), which causes performance degradation due to flooding when used for a long time.
  • the sub-flow passage 120 (sub channel) is installed in the rib portion 110 (rib) so that the water generated in the lower portion of the rib 110 (rib) is the sub-flow passage 120 (sub channel).
  • the sub-flow passage 120 (sub channel) is installed in the rib portion 110 (rib) so that the water generated in the lower portion of the rib 110 (rib) is the sub-flow passage 120 (sub channel).
  • the indication shown on the channel means the gas outlet direction, and the indication indicates the gas inlet (inflow) direction. That is, the gas flow directions in the display channel and the display channel are reversed.
  • the separator 1 of the present invention reduces the pressure drop and improves durability of the electrolyte membrane by uniform current density distribution.
  • the separation plate 1 of the present invention the auxiliary flow path 120 (sub channel) is installed to distribute the reaction gas flow inside the separation plate to minimize the internal pressure drop to uniform current for the entire reaction area
  • the density distribution can be obtained, thereby minimizing the deterioration of the membrane-electrode assembly (MEA) occurring in the flow path of the existing separator plate, thereby improving the performance of the polymer electrolyte fuel cell and the durability of the membrane-electrode assembly (MEA) at the same time.
  • MEA membrane-electrode assembly
  • the present invention improves the mechanical strength by dispersing the stress concentration phenomenon of the separator (1).
  • the voltage required for the application to the actual fuel cell system is higher than the voltage of the unit cell. Therefore, the stack between the separator plates is used continuously, and the pressure plates (End plates) are installed at both ends to provide airtightness between the separator plates and the separator plates. It is fastened with a strong fastening force for maintenance. Therefore, as in the present invention, when the sub-flow channel 120 (sub channel) is installed, the gap between the main flow channel 100 (main channel) can be narrowed, thereby separating the separation plate 1 or the gas diffusion layer 2 (GDL). It is possible to minimize the deformation, the uniform load is applied to the separator 1 to prevent the crack of the electrode and to reduce the stress concentration phenomenon of the separator 1 can be improved the overall mechanical strength.
  • the sub-flow channel 120 sub channel
  • GDL gas diffusion layer 2
  • auxiliary flow passage and the bypass flow passage of the present invention can be applied to the separation plate having various flow channel patterns as schematically shown in FIGS. 7 to 10, thereby improving productivity in manufacturing.
  • the auxiliary flow path and the bypass flow path structure applied to the separating plate 1 of the present invention are parallel type (parellel type) (Fig. 7), interdigitated type (Fig. 8), etc. and the parallel wave combined these shapes It can be applied to ribs such as parallel corrugated type (Fig. 9), divided interdigitated type (left and right drawings in Fig. 10) flow path shape, and the main flow path ( The main channel and the sub channel can be manufactured at the same time, thereby improving productivity.
  • FIG. 6 is a graph comparing the pressure difference between the cell voltage and the inlet and outlet in the shape of the main flow path and the auxiliary flow path.
  • the high current density at the lip 110 is caused by the under-rib convection between the channel and the inlet and the concentration of the high gas at the inlet, and moves from the inlet to the outlet. The more sudden the current density decreases.
  • the locally high current density has a big problem because the polymer electrolyte membrane 3 may cause damage due to deterioration.
  • the supply gas is fed to the auxiliary flow path 120 of the lip 110 by the under-rib convection generated between the channels. While moving, the water generated in the lower portion of the lip 110 is pushed into the auxiliary flow passage 120 to smoothly discharge the water.
  • the supply gas supplied from the inlet side is distributed to the auxiliary flow channel 120, unlike the case where the conventional separation plate is applied, it does not show a high current density at the inlet side, and the supply gases moving to the auxiliary flow channel 120 are mainly flowed. It is longer than the residence time in the flow path 100 to make the overall current density uniform.
  • the existing separator When comparing the existing separator and the separator 1 adopting the structure of the present invention, the existing separator is significantly lower current density from the inlet side to the outlet side, but in the case of the separator 1 of the present invention toward the outlet side As the current density decreases due to the movement, the overall current density distribution is improved compared to the conventional separator.
  • FIG. 6 illustrates the difference in pressure between the cell voltage and the inlet and outlet of the anode and the cathode when the average current density is 0.6 A / cm 2 . Comparing the cell voltage at the same current density of the main flow passage 100 and the auxiliary flow passage 120 shows a very small difference (0.001V) and the difference between the anode and the cathode. It can be clearly seen that the pressure difference between the inlet and outlet is low in the auxiliary flow passage 120.
  • the present invention is not limited to the above embodiments, and may be modified and modified in various forms without departing from the scope of the technical spirit of the present invention. That is, the rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.
  • the present invention is applied to the fields of polymer electrolyte fuel cell vehicles, household distributed fuel cell systems, portable power generation systems, military emergency power generation systems, etc., which have persuasive power in terms of high energy efficiency and practical application.
  • the availability is very high.
  • the fuel cell market is estimated to be about $ 150 billion when all new fuel cells are installed in new automotive, household, and portable products to be released in 2030. It is expected to surpass $ 1 trillion annually, including the Clean Development Mechanism (CDM), Emission Trading (ET), and Co-Op.
  • CDM Clean Development Mechanism
  • Emission Trading Emission Trading
  • Co-Op Co-Op.
  • the present invention is highly industrially applicable as expected to contribute to profit generation in implementing the system such as Joint Implementation (JI).

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un séparateur pour une pile à combustible à poly-électrolyte. Le temps de résidence d'un gaz de réaction est augmenté afin d'améliorer une réaction électrochimique. L'eau est suffisamment refoulée afin de minimiser le risque d'inondation dû à une production excessive d'eau au niveau de la nervure de séparation. La chute de la pression interne du séparateur est minimisée afin d'obtenir une distribution de densité de courant uniforme. La distance entre des canaux principaux est réduite afin d'empêcher une concentration de contraintes sur le séparateur, ce qui améliore sa résistance mécanique. A cette fin, le séparateur comprend ledit canal principal, ladite nervure et ledit sous-canal. De l'hydrogène, de l'air ou de l'oxygène s'écoule à travers le canal principal. La nervure sépare les canaux principaux les uns des autres. Le sous-canal est configuré pour refouler l'eau produite au niveau de la nervure, et augmente le temps de résidence du gaz de réaction afin d'augmenter l'efficacité de la réaction.
PCT/KR2010/005533 2010-01-25 2010-08-20 Séparateur pour pile à combustible comprenant un sous-canal WO2011090246A1 (fr)

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Application Number Priority Date Filing Date Title
KR10-2010-0006602 2010-01-25
KR1020100006602A KR20110087123A (ko) 2010-01-25 2010-01-25 보조유동유로를 가지는 연료전지용 분리판

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109509897A (zh) * 2018-12-13 2019-03-22 中国科学院大连化学物理研究所 一种用于静态排水燃料电池导水双极板的水流场
DE102020114126B4 (de) 2019-08-13 2022-08-11 Toyota Jidosha Kabushiki Kaisha Brennstoffzellenseparator und einzelne Brennstoffzelle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2557621A1 (fr) * 2011-08-10 2013-02-13 The European Union, represented by the European Commission Pile à combustible
KR101315622B1 (ko) * 2011-12-28 2013-10-08 주식회사 효성 분기유로를 이용한 연료전지 스택
CN116770336B (zh) * 2023-08-08 2023-12-26 清华大学 一种双极板及质子交换膜电解槽

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KR20030060668A (ko) * 2002-01-10 2003-07-16 (주)퓨얼셀 파워 미세유로를 갖는 분리판 및 그 제조방법
KR20030060669A (ko) * 2002-01-10 2003-07-16 (주)퓨얼셀 파워 보조유로를 갖는 분리판
JP2004207039A (ja) * 2002-12-25 2004-07-22 Sanyo Electric Co Ltd 燃料電池のガス流通安定方法及びその方法に用いるセパレータ並びにそのセパレータを備えた固体高分子形燃料電池

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030060668A (ko) * 2002-01-10 2003-07-16 (주)퓨얼셀 파워 미세유로를 갖는 분리판 및 그 제조방법
KR20030060669A (ko) * 2002-01-10 2003-07-16 (주)퓨얼셀 파워 보조유로를 갖는 분리판
JP2004207039A (ja) * 2002-12-25 2004-07-22 Sanyo Electric Co Ltd 燃料電池のガス流通安定方法及びその方法に用いるセパレータ並びにそのセパレータを備えた固体高分子形燃料電池

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109509897A (zh) * 2018-12-13 2019-03-22 中国科学院大连化学物理研究所 一种用于静态排水燃料电池导水双极板的水流场
CN109509897B (zh) * 2018-12-13 2021-03-16 中国科学院大连化学物理研究所 一种用于静态排水燃料电池导水双极板的水流场
DE102020114126B4 (de) 2019-08-13 2022-08-11 Toyota Jidosha Kabushiki Kaisha Brennstoffzellenseparator und einzelne Brennstoffzelle
US11605822B2 (en) 2019-08-13 2023-03-14 Toyota Jidosha Kabushiki Kaisha Fuel cell separator and single fuel cell

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