WO2015019714A1 - フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック - Google Patents
フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック Download PDFInfo
- Publication number
- WO2015019714A1 WO2015019714A1 PCT/JP2014/066003 JP2014066003W WO2015019714A1 WO 2015019714 A1 WO2015019714 A1 WO 2015019714A1 JP 2014066003 W JP2014066003 W JP 2014066003W WO 2015019714 A1 WO2015019714 A1 WO 2015019714A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- electrode assembly
- membrane electrode
- peripheral edge
- membrane
- Prior art date
Links
Images
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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- 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
-
- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
-
- 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 membrane electrode assembly with a frame used in a polymer electrolyte fuel cell, and relates to a single cell for a fuel cell and a fuel cell stack using the membrane electrode assembly with a frame.
- Patent Document 1 As this type of membrane electrode assembly, there is one described in Patent Document 1 under the name of a method for producing an electrolyte membrane / electrode structure with a resin frame for a fuel cell.
- the electrolyte membrane / electrode structure with a resin frame described in Patent Document 1 the electrolyte membrane is exposed on the outer periphery of the electrolyte membrane / electrode structure with the anode electrode removed.
- the resin frame member On the inner periphery of the resin frame member, there are provided a thin inner protrusion corresponding to the thickness of the anode electrode and a resin protrusion protruding in the thickness direction on the cathode electrode side.
- the resin membrane-attached electrolyte membrane / electrode structure is bonded to the exposed electrolyte membrane with the inner peripheral projection of the resin frame member by an adhesive layer, and then the resin projection is heated and melted to heat the cathode electrode.
- the gas diffusion layer is impregnated, and a resin-impregnated portion is formed in the gas diffusion layer.
- the thin inner peripheral protrusion and the membrane electrode provided on the frame Since the joined body (electrolyte membrane / electrode structure) is joined, for example, when a differential pressure is generated between the anode gas and the cathode gas, the frame is deformed so as to bend in the thickness direction, and this is repeated. Therefore, there is a problem that the inner peripheral protrusion of the frame may be damaged, and it has been a problem to solve such a problem.
- the present invention has been made paying attention to the above-mentioned conventional problems, and can secure a sufficient strength against the force acting in the thickness direction and can prevent the frame from being damaged. It aims at providing a membrane electrode assembly.
- the membrane electrode assembly with a frame includes a membrane electrode assembly having a structure in which an electrolyte membrane is sandwiched between a pair of electrode layers, and a resin frame provided around the membrane electrode assembly.
- the frame has an opening in which the membrane electrode assembly is disposed, a step formed along the periphery of the opening and corresponding to the thickness of the frame, and is opened in a state biased to one side of the frame by the step.
- An inner peripheral edge extending into the part is provided.
- the membrane electrode assembly with a frame has a configuration in which the outer peripheral edge portion of the membrane electrode assembly is bonded to the surface of the inner peripheral edge portion opposite to the biased side, and means for solving the conventional problems with the above configuration It is said.
- the membrane electrode assembly with a frame adopts the above-described configuration, so that the thickness of the inner peripheral edge, which is a joint portion with the membrane electrode assembly, is substantially equal to the thickness of the main body portion in the frame. Since the thickness is increased at the step portion, a sufficient strength can be secured against the force acting in the thickness direction, and the frame can be prevented from being damaged.
- FIG. 3 is a perspective view (A) illustrating a fuel cell stack according to the present invention, a perspective view (B) in an exploded state, and a perspective view (C) illustrating a cell module and a seal plate. It is a perspective view which shows the single cell for fuel cells which comprises the fuel cell stack shown in FIG. 1 in the decomposition
- FIG. 3 is a perspective view (A) of the frame and membrane electrode assembly viewed from the cathode side, and a perspective view (B) of the state viewed from the anode side. They are a three-view figure (A) explaining 2nd Embodiment of a flame
- a sectional view (A) of the main part of the membrane electrode assembly with a frame and sectional views (B) to (D) showing three examples of the junction portion, respectively.
- the fuel cell stack FS shown in FIG. 1 includes at least two or more cell modules M in which a plurality of single cells C are integrated and integrated, as shown in FIGS. And a seal plate P interposed therebetween.
- the unit cell C and the seal plate P in the illustrated example each have a rectangular plate shape having substantially the same vertical and horizontal dimensions.
- FIG. 1C two cell modules M and one seal plate P are shown, but actually, a larger number of cell modules M and seal plates P are stacked.
- the fuel cell stack FS has end plates 56A and 56B arranged at both ends in the stacking direction of the cell modules M, and fastened to the stacking end surfaces (upper and lower surfaces in FIG. 1) on the long side of the single cell C.
- the plates 57A and 57B are provided, and the reinforcing plates 58A and 58B are provided on the laminated end surface on the short side.
- Each of the fastening plates 57A, 57B and the reinforcing plates 58A, 58B has a size over the entire length in the stacking direction of the stacked body A composed of the cell module M and the seal plate P, and is connected to both end plates 56A, 56B by bolts (not shown). .
- the fuel cell stack FS has a case-integrated structure as shown in FIG. 1A.
- Each cell module M and the seal plate P are constrained and pressurized in the stacking direction, and each unit cell C is predetermined.
- the single cell C in the illustrated example has an external terminal 59 for voltage measurement at the same position on the long side.
- one fastening plate 57A on the upper side in FIG. 1 has a slit 57S into which the external terminal 59 of each single cell C enters, and a connector divided into an appropriate number with respect to the external terminal 59. (Not shown) can be connected.
- the single cell C includes a membrane electrode assembly 2 with a frame and a pair of separators 3 and 4 (an anode side and a cathode side) that sandwich the membrane electrode assembly 2.
- the membrane electrode assembly 2 has a structure in which an electrolyte membrane is sandwiched between a pair of electrode layers, and includes a resin frame 1 around the membrane.
- the frame 1 and the separators 3 and 4 are all rectangular plate shapes having substantially the same vertical and horizontal dimensions. The joining of the frame 1 and the membrane electrode assembly 2 will be described in detail later.
- the membrane electrode assembly 2 is generally referred to as MEA (Membrane Electrode Assembly), and as shown in part in FIG. 3A, an electrolyte membrane 11 made of a solid polymer is formed as a fuel electrode layer (anode). 12 and an air electrode layer (cathode) 13. Although not shown, the fuel electrode layer 11 and the air electrode layer 13 are each provided with a catalyst layer and a gas diffusion layer made of a porous material from the membrane electrode assembly 2 side. In this membrane electrode assembly 2, an anode gas (hydrogen) is supplied to the fuel electrode layer 12, and a cathode gas (air) is supplied to the air electrode layer 13 to generate power by an electrochemical reaction.
- an anode gas hydrogen
- a cathode gas air
- Each of the separators 3 and 4 is a metal plate member having an inverted shape, and is made of stainless steel, for example, and can be formed into an appropriate shape by pressing.
- the central region corresponding to the membrane electrode assembly 2 is formed in a wave shape in the cross section in the short side direction. This wave shape is continuous in the long side direction as shown.
- the corrugated crest portion is in contact with the membrane electrode assembly 2, and the corrugated trough portion is a flow path for anode gas or cathode gas.
- the frame 1 of the membrane electrode assembly 2 and the separators 3 and 4 have three manifold holes H1 to H3 and H4 to H6 at both ends on the short side.
- the manifold holes H1 to H3 shown on the left side of FIGS. 1 and 2 are for cathode gas supply (H1), cooling fluid supply (H2), and anode gas discharge (H3), and communicate with each other in the stacking direction.
- the manifold holes H4 to H6 shown on the right side of FIGS. 1 and 2 are for anode gas supply (H4), cooling fluid discharge (H5) and cathode gas discharge (H6), and communicate with each other in the stacking direction.
- the supply and discharge may be partially or entirely reversed in positional relationship.
- a seal member S is continuously disposed around the peripheral edge of the frame 1 and the separators 3 and 4 and around the manifold holes H1 to H6. These sealing members S also function as adhesives, and airtightly join the frame 1 and membrane electrode assembly 2 to the separators 3 and 4. Further, the seal member S arranged around the manifold holes H1 to H6 has an opening at a corresponding portion in order to supply a fluid according to each layer while maintaining the airtightness of each manifold.
- the above-mentioned single cell C forms a cell module M by laminating a predetermined number. At this time, a cooling fluid channel is formed between the adjacent single cells C, and a cooling fluid channel is also formed between the adjacent cell modules M. Therefore, the seal plate P is disposed between the cell modules M, that is, in the flow path of the cooling fluid.
- the seal plate P is formed by molding a single conductive metal plate, is formed in the same rectangular plate shape and in the same size as the above-described single cell C in plan view, and on both short sides, Manifold holes H1 to H6 similar to the single cell C are formed.
- This seal plate P is provided with a seal member around each of the manifold holes H1 to H6, and an outer peripheral seal member 51 and an inner peripheral seal member 52 are provided in parallel on the entire periphery thereof.
- the member 51 prevents rainwater and the like from entering from the outside, and the inner peripheral sealing member 52 prevents leakage of the cooling fluid flowing through the flow path between the cell modules M.
- the membrane electrode assembly 2 with a frame includes a resin frame 1 around it.
- the frame 1 includes a central rectangular opening 1 ⁇ / b> A, a stepped portion 1 ⁇ / b> B, an inner peripheral edge 1 ⁇ / b> C, and a thick outer peripheral edge 1 ⁇ / b> D.
- the opening 1A is a part where the membrane electrode assembly 2 is disposed.
- the step portion 1B is formed along the periphery of the opening 1A and has a step corresponding to the thickness of the frame 1.
- the inner peripheral edge portion 1C continues to the step portion 1B and extends into the opening 1A in a state of being biased to one side of the frame 1 by the step portion 1B.
- the step portion 1B has a step corresponding to the thickness T1 of the frame 1, and therefore the inner peripheral edge portion 1C continuous therewith has the same thickness as the frame body. It is T1. Further, the stepped portion 1B has an interval T2 between the output angle portion on the bias side (upper side in FIG. 3) and the entrance angle portion on the anti-bias side, and an interval between the entrance angle portion on the bias side and the exit angle portion on the anti-bias side T3 is a structure in which both are larger than the thickness T1 of the frame 1.
- the stepped portion may be formed in a crank shape as shown in FIG. 3, or as shown in 5 described later, the main body portion and the inner peripheral edge portion 1C may be continuously curved.
- the membrane electrode assembly 2 exposes one surface of the electrolyte membrane 11 with the fuel electrode layer 12 removed at the outer peripheral edge. And the surface (lower surface in FIG. 3) on the opposite side to the bias side in the inner peripheral edge portion 1C of the frame 1 and the electrolyte membrane 11 in the outer peripheral edge portion of the membrane electrode assembly 2 are bonded.
- an adhesive or a pressure-sensitive adhesive is used, and the bonding layer 14 is formed between the inner peripheral edge 1 ⁇ / b> C and the electrolyte membrane 11 using these materials.
- the electrode layer on the bias side of the inner peripheral edge 1C is the fuel electrode layer 12.
- FIG. 3A there is a groove-like gap between the frame 1 and the membrane electrode assembly 2, and this gap is outside the inner peripheral edge 1 C of the frame 1 and the membrane electrode assembly 2. This is to absorb the dimensional tolerance of the peripheral portion, and may be omitted.
- the bonding layer 14 is shown in a frame shape, but actually, it is provided on the inner peripheral edge 1C by screen printing or coating.
- the thickness T1 of the inner peripheral edge portion 1C that is a junction portion with the membrane electrode assembly 2 is substantially equal to the thickness of the main body portion, and the step portion Since the thickness is 1B, sufficient strength can be secured against the force acting in the thickness direction, and the frame 1 can be prevented from being damaged.
- the frame 1 continuously has the main body portion through the thick step portion 1B to the inner peripheral edge portion 1C, the moldability (resin fluidity) is improved and the quality can be improved. Furthermore, since the membrane electrode assembly 2 with a frame is completed simply by joining with the frame 1 molded as a separate part, the structure is simple, the cycle time of manufacturing per sheet is shortened, and the cost is reduced. In addition to being realized, it will be excellent in mass productivity.
- the structure is simplified, the cost is reduced, the durability and the production.
- the improvement of property can be realized.
- the supply pressure of the anode gas may be increased or decreased in a pulsed manner in order to remove the generated water generated on the fuel electrode.
- the supply pressure of the anode gas when the supply pressure of the anode gas is increased, the pressure on the anode side becomes higher than that on the cathode side, and due to the differential pressure, the frame 1 is deformed to bend toward the cathode side. 1 repeatedly deforms.
- the electrode layer on the bias side of the inner peripheral edge 1C of the frame 1 is the fuel electrode layer 12, in other words, the inner peripheral edge 1C on the anode side where the pressure becomes high. Is biased.
- the membrane electrode assembly 2 with a frame is shown as a frame side in FIG. 3C because a force in the compression direction acts on the cathode side of the stepped portion 1B when the frame 1 is bent toward the cathode side.
- the generated stress ratio is smaller than the differential pressure input from the opposite frame side (cathode side).
- the membrane electrode assembly 2 with a frame has high durability against deformation due to the differential pressure between the anode gas and the cathode gas.
- FIG. 5 is a view showing another embodiment of the frame in the membrane electrode assembly with frame of the present invention, and is a configuration in which a reinforcing portion is provided on at least one side of the stepped portion 1B.
- the frame 1 according to the second embodiment shown in FIG. 5A has rib-shaped reinforcing portions 1E at predetermined intervals in the continuous direction of the stepped portion 1B on both sides of the stepped portion 1B.
- the frame 1 of the third embodiment shown in FIG. 5B has tenon-like reinforcing portions 1F at predetermined intervals in the continuous direction of the stepped portion 1B on the biased side surface of the stepped portion 1B.
- the reinforcing portion 1F is provided from the step portion to the inner peripheral edge portion 1C.
- the frame 1 of the fourth embodiment shown in FIG. 5C is provided with a tenon-like reinforcing portion 1G in the continuous direction of the stepped portion 1B on the biased side surface of the stepped portion 1B.
- the reinforcing portion 1G is provided from the step portion to the inner peripheral edge portion 1C, and the upper end portion is curved, and an R is provided between the step portion 1B and the inner peripheral edge portion 1C to form a wave shape as a whole. It is formed as follows.
- the frame 1 provided with the reinforcing portions 1E, 1F, and 1G described above can further increase the strength of the stepped portion 1B and the inner peripheral edge portion 1C, and achieve further improvement in durability.
- the configuration in which the reinforcing portions 1E, 1F, and 1G are arranged at a predetermined interval has been described.
- these can be configured to be continuous.
- a plurality of reinforcing portions are formed at predetermined intervals on the short side for the convenience of circulating anode gas and cathode gas.
- the space can be a gas flow path.
- a plurality of reinforcing portions or continuous reinforcing portions can be formed on the long side to suppress side flows of the anode gas and the cathode gas.
- FIG. 6 is a view showing a fifth embodiment of the membrane electrode assembly with frame of the present invention.
- the fuel electrode layer 12 constituting the membrane electrode assembly 2 has a catalyst layer 12A and a gas diffusion layer (not shown) from the electrolyte membrane 11 side.
- the air electrode layer 13 constituting the membrane electrode assembly 2 has a catalyst layer 13A and a gas diffusion layer 13B from the electrolyte membrane 11 side.
- the outer peripheral edge of the membrane electrode assembly 2 has no gas diffusion layer in the fuel electrode layer 12 which is one of the electrode layers, and the catalyst layer 12A is exposed.
- a bonding layer 14 made of an adhesive or a pressure-sensitive adhesive is provided between the inner peripheral edge 1C of the frame 1 and the catalyst layer 12A of the fuel electrode layer 12.
- this membrane electrode assembly 2 with a frame by joining the inner peripheral edge 1C and the catalyst layer 12A, higher bonding strength is obtained than when the inner peripheral edge 1C and the gas diffusion layer made of a porous body are bonded. be able to.
- the outer peripheral edge of the membrane electrode assembly 2 has one surface of the electrolyte membrane 11 on the fuel electrode layer 12 side, which is one electrode layer side, exposed. And it is the structure which has the joining layer 14 which consists of an adhesive agent or an adhesive between the inner peripheral part 1C of the flame
- FIG. 1 In this membrane electrode assembly 2 with a frame, by omitting the fuel electrode layer 12 at the outer peripheral edge outside the power generation region, the catalyst layer 12A containing an expensive catalyst can be minimized and further cost reduction can be achieved. it can.
- the outer peripheral edge of the membrane electrode assembly 2 exposes one surface of the electrolyte membrane 11 on the fuel electrode layer 12 side.
- the bonding layer 14 is provided between the inner peripheral edge 1 ⁇ / b> C of the frame 1 and one surface of the electrolyte membrane 11.
- the outer peripheral edge portion of the membrane electrode assembly 2 has a communication hole 13 ⁇ / b> C that extends from the electrolyte membrane 11 to the air electrode layer 13 that is the other electrode layer.
- the communication hole 13 ⁇ / b> C opens at the surface of the electrolyte membrane 11 and has a bottom portion in the middle of the gas diffusion layer 13 ⁇ / b> B of the air electrode layer 13.
- the anchor part 14A integrated with the said joining layer 14 is filled with the material which forms the joining layer 14 inside the communicating hole 13C.
- the cost can be further reduced by omitting the fuel electrode layer 12 at the outer peripheral edge.
- the membrane electrode assembly 2 forms the anchor portion 14A that bites into the air electrode layer 13, even when the electrolyte membrane 11 made of a difficult-to-adhere material such as a fluorine-based material is used, the electrolyte membrane 11 It is possible to improve the adhesion between the inner peripheral edge 1C of the frame 1 and the electrolyte membrane 11.
- FIG. 7 is a diagram for explaining two embodiments of a unit cell for a fuel cell provided with a membrane electrode assembly 2 with a frame according to the present invention, and is a cross-sectional view of the long side portion of the unit cell C shown in FIG. It is. Note that the same components as those of the previous embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- a single cell C shown in FIGS. 7A and 7B includes a membrane electrode assembly 2 with a frame and a pair of separators 3 and 4 that sandwich the membrane electrode assembly 2.
- the pair of separators 3 and 4 are on the anode side and the cathode side, and as described in the previous embodiment, are front and back inverted shapes having appropriate irregularities, and are in the long side direction (perpendicular to the paper surface in FIG. 7). Anode gas and cathode gas are circulated.
- the single cell C includes a seal member S that hermetically joins the separators 3 and 4 between a portion on the outer peripheral side (left side in FIG. 7) of the step portion 1B of the frame 1 and the separators 3 and 4. Yes.
- the seal member S is equivalent to the seal member S described in the first embodiment, and has elasticity.
- the single cell C has a structure in which the joining portion between the inner peripheral edge portion 1C of the frame 1 and the outer peripheral edge portion of the membrane electrode assembly 2 is sandwiched between both separators 3 and 4 so as to maintain a good bonding state of both. It has become.
- the single cell C according to the sixth embodiment shown in FIG. 7A has protrusions 1Q that are in contact with the inner surfaces of the separators 3 and 4 on the inner peripheral side of the seal member S on both surfaces of the frame 1, respectively. 1R. These protrusions 1Q and 1R are formed at a predetermined interval or continuously according to the short side and the long side of the membrane electrode assembly 2 in the same manner as the reinforcing portion described in FIG. You can do it.
- the single cell C having the above-described configuration can reinforce the frame 1 by the protrusions 1Q and 1R in addition to the strength improvement by the stepped portion 1B, and the protrusions 1Q and 1R are connected to the separators 3 and 4 respectively.
- the load in the stacking direction applied at the time of stacking can be satisfactorily transmitted.
- the single cell C can keep the thickness of the seal member S constant by bringing the projections 1Q and 1R of the frame 1 into contact with the separators 3 and 4, and each single cell C at the time of stacking can be maintained. Variations in the sealing function can be prevented. Further, in the single cell C, the protrusions 1Q and 1R become obstacles to the side flow particularly on the long side of the membrane electrode assembly 2, that is, along the flow direction of the anode gas and the cathode gas, and thus enter the power generation region. The distribution of each gas can be promoted, thereby contributing to the improvement of power generation efficiency.
- the single cell C of the seventh embodiment shown in FIG. 7B is in contact with the inner surface of each separator 3, 4 on both the inner peripheral side and the outer peripheral side of the seal member S on both sides of the frame 1.
- Protrusions 1Q and 1R are provided. These protrusions 1Q and 1R are formed at a predetermined interval or continuously according to the short side and the long side of the membrane electrode assembly 2 in the same manner as the reinforcing portion described in FIG. You can do it.
- the frame 1 can be reinforced by the protrusions 1Q and 1R in addition to the strength improvement by the step portion 1B, and the load in the stacking direction applied at the time of stacking can be increased. It can be transmitted well.
- the single cell C has the protrusions 1Q and 1R on both sides of the seal member S, the function of keeping the thickness of the seal member S constant is more reliable, and the seal of each single cell C at the time of stacking It is possible to obtain a function of preventing variation in function and preventing a side flow on the long side of the membrane electrode assembly 2.
- the membrane electrode assembly with frame, the single cell for fuel cell, and the fuel cell stack according to the present invention are not limited to the above embodiments, and the scope of the present invention is not deviated.
- the material, shape, size, number and the like of each member can be changed.
Landscapes
- 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
Description
図1に示す燃料電池スタックFSは、とくに図1(B)及び(C)に示すように、単セルCを複数枚積層して一体化した少なくとも二つ以上のセルモジュールMと、セルモジュールM同士の間に介装するシールプレートPとを備えている。図示例の単セルC及びシールプレートPは、いずれもほぼ同じ縦横寸法を有する矩形板状を成している。なお、図1(C)には、2つのセルモジュールMと、1つのシールプレートPを示しているが、実際には、それ以上の数のセルモジュールM及びシールプレートPを積層する。
図5は、本発明のフレーム付き膜電極接合体におけるフレームの他の実施形態を示す図であって、段差部1Bの少なくとも片面側に補強部を設けた構成である。
図6は、本発明のフレーム付き膜電極接合体の第5実施形態を示す図である。図6(B)~(D)において、膜電極接合体2を構成する燃料極層12は、電解質膜11側から、触媒層12Aと、図示しないガス拡散層を有している。また、同じく膜電極接合体2を構成する空気極層13は、電解質膜11側から、触媒層13Aと、ガス拡散層13Bを有している。
図7は、本発明に係わるフレーム付き膜電極接合体2を備えた燃料電池用単セルの二例の実施形態を説明する図であり、図2に示す単セルCの長辺部分の断面図である。なお、先の実施形態と同一の構成部位は、同一符号を付して詳細な説明を省略する。
1A 開口部
1B 段差部
1C 内周縁部
1E,1F,1G 補強部
1Q,1R 突部
2 膜電極接合体
3,4 セパレータ
11 電解質膜
12 燃料極層(電極層)
12A 燃料極層の触媒層
13 空気極層(電極層)
13C 連通穴
14 接合層
14A アンカー部
C 燃料電池用単セル
FS 燃料電池スタック
S シール部材
Claims (10)
- 電解質膜を一対の電極層で挟持した構造を有する膜電極接合体と、
膜電極接合体の周囲に設けた樹脂製のフレームを備え、
フレームが、膜電極接合体を配置する開口部と、開口部の周縁に沿って形成され且つフレームの厚さ分に相当する段差部と、段差部によりフレームの片面側に偏倚した状態で開口部内に延出する内周縁部を備え、
内周縁部における偏倚側とは反対側の面に、膜電極接合体の外周縁部を接合したことを特徴とするフレーム付き膜電極接合体。 - 前記内周縁部の偏倚側となる電極層が、燃料極層であることを特徴とする請求項1に記載のフレーム付き膜電極接合体。
- 前記段差部の少なくとも片面側に補強部を設けたことを特徴とする請求項1又は2に記載のフレーム付き膜電極接合体。
- 前記膜電極接合体の外周縁部が、一方の電極層を構成する触媒層を露出状態に有し、
フレームの内周縁部と一方の電極層の触媒層との間に、接着剤又は粘着剤から成る接合層を有することを特徴とする請求項1~3のいずれか1項に記載のフレーム付き膜電極接合体。 - 前記膜電極接合体の外周縁部が、一方の電極層側となる電解質膜の片面を露出状態に有し、
フレームの内周縁部と電解質膜の片面との間に、接着剤又は粘着剤から成る接合層を有することを特徴とする請求項1~3のいずれか1項に記載のフレーム付き膜電極接合体。 - 前記膜電極接合体の外周縁部が、電解質膜から他方の電極層に至る連通穴を有し、
連通穴の内部に、接合層を形成する材料から成り且つ前記接合層と一体化したアンカー部を形成したことを特徴とする請求項5に記載のフレーム付き膜電極接合体。 - 請求項1~6のいずれか1項に記載のフレーム付き膜電極接合体と、このフレーム付き膜電極接合体を挟持する一対のセパレータを備えたことを特徴する燃料電池用単セル。
- フレームの段差部よりも外周側の部分と各セパレータとの間に、双方を気密的に接合するシール部材を備え、
フレームが、シール部材よりも内周側に、各セパレータに夫々当接する突部を有していることを特徴とする請求項7に記載の燃料電池用単セル。 - フレームが、シール部材よりも外周側に、各セパレータに夫々当接する突部を有していることを特徴とする請求項8に記載の燃料電池用単セル。
- 請求項7~9のいずれか1項に記載の燃料電池用単セルを複数積層した構造を有することを特徴とする燃料電池スタック。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015530739A JP6128353B2 (ja) | 2013-08-08 | 2014-06-17 | フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック |
CA2920772A CA2920772C (en) | 2013-08-08 | 2014-06-17 | Membrane electrode assembly with frame, fuel cell single cell, and fuel cell stack |
CN201480051840.9A CN105556725B (zh) | 2013-08-08 | 2014-06-17 | 带框架的膜电极接合体、燃料电池用单元电池以及燃料电池堆 |
EP14834289.2A EP3032626B1 (en) | 2013-08-08 | 2014-06-17 | Membrane electrode assembly with frame, fuel cell single cell, and fuel cell stack |
US14/910,448 US20160190610A1 (en) | 2013-08-08 | 2014-06-17 | Membrane electrode assembly with frame, fuel cell single cell, and fuel cell stack |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-165364 | 2013-08-08 | ||
JP2013165364 | 2013-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015019714A1 true WO2015019714A1 (ja) | 2015-02-12 |
Family
ID=52461055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/066003 WO2015019714A1 (ja) | 2013-08-08 | 2014-06-17 | フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160190610A1 (ja) |
EP (1) | EP3032626B1 (ja) |
JP (1) | JP6128353B2 (ja) |
CN (1) | CN105556725B (ja) |
CA (1) | CA2920772C (ja) |
WO (1) | WO2015019714A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018092773A (ja) * | 2016-12-01 | 2018-06-14 | トヨタ自動車株式会社 | 燃料電池の製造方法 |
EP3297081A4 (en) * | 2015-05-13 | 2018-07-11 | Nissan Motor Co., Ltd. | Fuel cell stack |
EP3392941A4 (en) * | 2015-12-18 | 2018-10-31 | Nissan Motor Co., Ltd. | Fuel cell stack seal structure and production method therefor |
US10863898B2 (en) | 2015-06-05 | 2020-12-15 | Jand, Inc. | System and method for determining distances from an object |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3060862A1 (fr) * | 2016-12-20 | 2018-06-22 | Compagnie Generale Des Etablissements Michelin | Procede de fabrication d'assemblage membrane-electrode pour pile a combustible |
EP3664201B1 (en) * | 2017-07-31 | 2020-12-16 | Nissan Motor Co., Ltd. | Fuel battery cell |
JP2022175654A (ja) * | 2021-05-14 | 2022-11-25 | トヨタ自動車株式会社 | 燃料電池 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05234606A (ja) * | 1992-02-21 | 1993-09-10 | Fuji Electric Co Ltd | 固体高分子電解質型燃料電池 |
JP2007516559A (ja) * | 2003-10-16 | 2007-06-21 | チャン、シュン−ヒュエイ | 携帯装置中に使用するための燃料電池 |
JP2013131417A (ja) | 2011-12-22 | 2013-07-04 | Honda Motor Co Ltd | 燃料電池用樹脂枠付き電解質膜・電極構造体の製造方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100537726B1 (ko) * | 2003-06-02 | 2005-12-19 | (주)퓨얼셀 파워 | 고분자 전해질형 연료전지의 실링구조 |
CA2479325C (en) * | 2003-08-28 | 2010-08-10 | Honda Motor Co., Ltd. | Fuel cell having closure seal |
DE102004044685B4 (de) * | 2003-09-19 | 2014-02-20 | Honda Motor Co., Ltd. | Separator, Brennstoffzelle und Aufbau der Verbindung zwischen den Klemmen einer Zellenspannungsmessvorrichtung und einer Brennstoffzelle |
JP2006331783A (ja) * | 2005-05-25 | 2006-12-07 | Nissan Motor Co Ltd | 燃料電池用単セル |
CN101203976B (zh) * | 2005-06-20 | 2011-04-06 | 松下电器产业株式会社 | 膜-电极接合体的制造方法 |
JP5162884B2 (ja) * | 2006-11-22 | 2013-03-13 | 富士電機株式会社 | 固体高分子電解質型燃料電池 |
JP5332212B2 (ja) * | 2007-11-05 | 2013-11-06 | 大日本印刷株式会社 | ガスケット付き電解質膜−触媒層接合体、これを用いたガスケット付き電解質膜−電極接合体、及び固体高分子形燃料電池 |
JP5321801B2 (ja) * | 2008-10-31 | 2013-10-23 | Nok株式会社 | 燃料電池 |
CN103443981B (zh) * | 2011-04-01 | 2016-08-17 | 本田技研工业株式会社 | 燃料电池用电解质膜、电极构造体及其制造方法 |
CN102751514B (zh) * | 2011-04-20 | 2014-12-31 | 本田技研工业株式会社 | 燃料电池单元及燃料电池 |
JP5855442B2 (ja) * | 2011-12-15 | 2016-02-09 | 本田技研工業株式会社 | 燃料電池用樹脂枠付き電解質膜・電極構造体の製造方法 |
US8895202B2 (en) * | 2012-01-13 | 2014-11-25 | Honda Motor Co., Ltd. | Fuel cell membrane electrode assembly |
JP5615875B2 (ja) * | 2012-01-16 | 2014-10-29 | 本田技研工業株式会社 | 燃料電池用樹脂枠付き電解質膜・電極構造体 |
JP6006956B2 (ja) * | 2012-03-26 | 2016-10-12 | 本田技研工業株式会社 | 燃料電池 |
-
2014
- 2014-06-17 WO PCT/JP2014/066003 patent/WO2015019714A1/ja active Application Filing
- 2014-06-17 EP EP14834289.2A patent/EP3032626B1/en not_active Not-in-force
- 2014-06-17 US US14/910,448 patent/US20160190610A1/en not_active Abandoned
- 2014-06-17 CA CA2920772A patent/CA2920772C/en not_active Expired - Fee Related
- 2014-06-17 CN CN201480051840.9A patent/CN105556725B/zh not_active Expired - Fee Related
- 2014-06-17 JP JP2015530739A patent/JP6128353B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05234606A (ja) * | 1992-02-21 | 1993-09-10 | Fuji Electric Co Ltd | 固体高分子電解質型燃料電池 |
JP2007516559A (ja) * | 2003-10-16 | 2007-06-21 | チャン、シュン−ヒュエイ | 携帯装置中に使用するための燃料電池 |
JP2013131417A (ja) | 2011-12-22 | 2013-07-04 | Honda Motor Co Ltd | 燃料電池用樹脂枠付き電解質膜・電極構造体の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3032626A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3297081A4 (en) * | 2015-05-13 | 2018-07-11 | Nissan Motor Co., Ltd. | Fuel cell stack |
US10396369B2 (en) | 2015-05-13 | 2019-08-27 | Nissan Motor Co., Ltd. | Fuel cell stack |
US10863898B2 (en) | 2015-06-05 | 2020-12-15 | Jand, Inc. | System and method for determining distances from an object |
EP3392941A4 (en) * | 2015-12-18 | 2018-10-31 | Nissan Motor Co., Ltd. | Fuel cell stack seal structure and production method therefor |
JP2018092773A (ja) * | 2016-12-01 | 2018-06-14 | トヨタ自動車株式会社 | 燃料電池の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6128353B2 (ja) | 2017-05-17 |
CN105556725B (zh) | 2019-01-18 |
US20160190610A1 (en) | 2016-06-30 |
EP3032626A4 (en) | 2016-07-13 |
CA2920772A1 (en) | 2015-02-12 |
CA2920772C (en) | 2018-04-17 |
EP3032626A1 (en) | 2016-06-15 |
EP3032626B1 (en) | 2017-08-09 |
CN105556725A (zh) | 2016-05-04 |
JPWO2015019714A1 (ja) | 2017-03-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6128353B2 (ja) | フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック | |
JP6115632B2 (ja) | 燃料電池スタックのセル構造 | |
JP5445986B2 (ja) | 燃料電池セル | |
JP5790083B2 (ja) | 燃料電池セル | |
JP5999529B2 (ja) | 燃料電池単セル | |
WO2014174944A1 (ja) | 絶縁構造体、燃料電池及び燃料電池スタック | |
CA2861978C (en) | Fuel cell with sealing structure between the frame and separator | |
JP5839307B2 (ja) | 燃料電池スタック | |
JP5786419B2 (ja) | 燃料電池セル | |
JP2015022802A (ja) | 燃料電池スタック | |
JP6229874B2 (ja) | フレーム付き膜電極接合体、燃料電池単セル及び燃料電池スタック | |
JP2014229577A (ja) | 燃料電池用のセパレータ | |
JP6150060B2 (ja) | フレーム付き膜電極接合体、燃料電池用単セル及び燃料電池スタック | |
JP2015018662A (ja) | 単セル構造、単セルの製造方法及びその製造方法により製造した単セル | |
JP6241594B2 (ja) | フレーム付き膜電極接合体、燃料電池単セル及び燃料電池スタック | |
WO2017060955A1 (ja) | 燃料電池スタック | |
WO2016181523A1 (ja) | 燃料電池スタック | |
JP7236913B2 (ja) | 燃料電池用分離板組立体およびこれを含む燃料電池スタック | |
KR20170129272A (ko) | 연료 전지 스택 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480051840.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14834289 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015530739 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14910448 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2920772 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2014834289 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014834289 Country of ref document: EP |