JPH0353458A - Electrode base material with rib for fuel cell - Google Patents
Electrode base material with rib for fuel cellInfo
- Publication number
- JPH0353458A JPH0353458A JP1186963A JP18696389A JPH0353458A JP H0353458 A JPH0353458 A JP H0353458A JP 1186963 A JP1186963 A JP 1186963A JP 18696389 A JP18696389 A JP 18696389A JP H0353458 A JPH0353458 A JP H0353458A
- Authority
- JP
- Japan
- Prior art keywords
- rib
- flat plate
- base material
- phosphoric acid
- electrode base
- 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
- 239000000463 material Substances 0.000 title claims description 38
- 239000000446 fuel Substances 0.000 title claims description 18
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 claims abstract description 26
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 70
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 35
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 239000011159 matrix material Substances 0.000 abstract description 11
- 230000000717 retained effect Effects 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 12
- 239000005011 phenolic resin Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010024229 Leprosy Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、リン酸形燃料電池に使用され、リブ部と平
板部とからなりかつ炭素繊維と結合剤とで形成される燃
料電池用リブ付き電極基材に関する．
〔従来の技術）
リン酸形燃料電池は一般に約２００℃の内部温度で運転
され、この状態で内部に含浸されているリン酸の濃度が
１００％近くになるように調節されている．このような
リン酸形燃料電池の運転を停止して室温まで温度を下げ
た状態で電池内部を大気と接触するような状態にすると
、リン酸は大気中の水分を吸収し、その体積が２倍以上
に増加する．またたとえ運転中であっても、燃料電池に
供給される燃料ガス中の水蒸気の含有量や、供給されて
いる燃料ガスや空気の利用率の変化によってもリン酸の
濃度が変化してリン酸の体積が変化することがよく知ら
れている．このようにリン酸の体積が変化すると電極の
反応領域が過度にリン酸で濡れたりまた反応領域が変化
して電池の特性を低下させることがある，このため燃料
電池の電極を例えばリブ付き電極碁材により構威し、リ
ブ部にリン酸の電解液を吸収，放出する含浸保持部を設
けることが知られている．第５図にこのようなリブ付電
極基材を斜視図で示す．リブ付き電極基材２Ｉは炭素繊
維を結合剤で結合した板から形或され、燃料ガスや空気
を通流させる縞２２を形成するリブ部２３を有する一方
の面２４と平らな他方の面２５とを有する．このリブ部
２３にリン酸の含浸保持機能をもたせる目的で、リブ部
２３とその基部から面２５に到る部分２６（以下親液部
と称す〉はリン酸に対して親液性（吸収性〉を保ち、そ
れ以外の部分２７（以下Ｉｎ液部と称す）はｒｎ液性の
加工をして、この親液部２６でもってリン酸の含浸保持
をさせていた．
なお具体的には、撥液部２７には弗素樹脂（例えばＰＴ
ＰＥ）の微細ディスパージゴン液による高濃度含浸処理
を行い、親液部２６にはこの液の低濃度含漫処理をして
、電極基材２ｌは乾燥．焼戒工程によりＪａ液部２７と
親液部２６を形成させていた．〔発明が解決しようとす
る！Ｉｆｆ）
このようなリン酸形燃料電池のリブ付き電極基材は、直
径が同一の炭素繊維のチップ材と結合剤とをつかって均
質に加圧戒形してリブ付き板に形成されるか、または威
形されたリブなし板より機械的切削加工によりリブ部を
形或加工するので、リブ部とその基部の親液部２６とそ
れ以外の癩液部２７とも同一の直径を有する炭素織維の
チップの素材から形成されている．また電極基材２１が
形成される素材となる平板は、炭素繊維チップを並べて
板状にして加圧威形されているが、炭素繊維は一般に平
らな面方向に配向して配設されている．したがって親液
部２６に含浸されたリン酸は、毛細管作用によって炭素
繊維にそって面方向に移動しやすい傾向があり、燃料電
池を長時間運転すると親液部２６よりリン酸が水平移動
して撥液部２７にも入りこみこれが燃料電池の発電特性
を悪化させる原因となった．すなわちリン酸が撓液部２
７にも移動すれば、電極に扶持されているマトリックス
のリン酸が不足し、燃料ガスや空気のクロスリークなど
が発生して発電特性を低下させる．
この発明はこの点に鑑みなされたもので、電解液を長い
時間含浸保持して、燃料電池の運転信頼性を向上するリ
ブ付き電極基材を提供することをＩＩＮとする．
〔課題を解決するための手段〕
上記課題を解決するために、この発明によれば、リン酸
形燃料電池に使用され、櫛形のリブ部とその基板となる
平板部とからなり、かつ炭素繊維と結合剤とで形成され
る電極基材であって、前記リブ部に使用される炭素繊維
の直径が平板部に使用される炭素繊維の直径よりも小さ
く、かつ平板部には、リブ部と平板部の接合するリブの
基部より平板部を貫通し、その径がリブの幅寸法よりも
小さい複数個の孔を有するものとする．
〔作用〕
この発明は、リン酸形燃料電池の単電池を構威している
リブ付き電極基材において、櫛形を形成するリブ部には
直径の小さい炭素繊維のチップ材を素材として使用し、
リブ部を支える基板となる平板部にはリブ部よりも直径
の大きい炭素繊維のチップ材を使用したので、リブ部の
方が平板部に較べて電解液の含浸保持性が大きくなる．
さらにリブ部の根元にあたる基部より平板部を貫通する
孔を設けたので、この孔がリブ部に保持される電解液と
マトリンクスに含浸されている電解液との流通路となり
、電極基材のリブ部と孔とマトリックスとが電解液によ
って連通ずることになる．したがってリブ部には電解液
が長い時間にわたって含浸保持され、燃料電池を長時間
運転してもマトリックスの電解液が不足することがない
．〔実施例〕
以下この発明を実施例に基づいて説明する．第１図はこ
の発明による燃料電池用リブ付き電極基材の一実施例の
斜視図で、この図において電極基材１は溝２とリブ３と
よりなる斜線で示したリブ部４と貫通する孔８を有する
平板部５とから構威されている．平板部５にはリブ３に
そってリブ３の基部よりこの平板部５を貫通する複数個
の孔８が設けられている．リブ部４は、一例として平均
直径２０ミクロンの炭素繊維のチップを主材としこれに
結合剤としてフェノール樹脂５％混合し、また平板部５
は、平均直径５０ξクロンの炭素繊維のチップを主材と
しこれに結合剤としてフェノール樹脂３％混合して形成
されている．
第２図にはこの電極基材の断面図が示され、孔８はリブ
３の根元である基部より平板部５を貫通して設けられて
いる状態を示している。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rib for a fuel cell, which is used in a phosphoric acid fuel cell, and is composed of a rib portion and a flat plate portion, and is formed of carbon fibers and a binder. Regarding electrode base material with attached. [Prior Art] Phosphoric acid fuel cells are generally operated at an internal temperature of about 200°C, and in this state the concentration of phosphoric acid impregnated inside is adjusted to be close to 100%. When the operation of such a phosphoric acid fuel cell is stopped and the temperature is lowered to room temperature and the inside of the cell is brought into contact with the atmosphere, the phosphoric acid absorbs moisture from the atmosphere and its volume increases to 2. It will increase more than twice. Furthermore, even during operation, the concentration of phosphoric acid changes due to changes in the water vapor content in the fuel gas supplied to the fuel cell and the utilization rate of the supplied fuel gas and air. It is well known that the volume of If the volume of phosphoric acid changes in this way, the reaction area of the electrode may become excessively wetted with phosphoric acid, or the reaction area may change, reducing the characteristics of the cell. It is known that it is constructed from Go material and has an impregnated holding part in the rib part that absorbs and releases phosphoric acid electrolyte. Figure 5 shows a perspective view of such a ribbed electrode base material. The ribbed electrode base material 2I is formed from a plate made of carbon fibers bonded with a binder, and has one surface 24 having rib portions 23 forming stripes 22 through which fuel gas and air flow, and the other surface 25 which is flat. It has In order to provide this rib portion 23 with a function of impregnating and retaining phosphoric acid, the rib portion 23 and a portion 26 extending from its base to the surface 25 (hereinafter referred to as the lyophilic portion) have lyophilic properties (absorption properties) for phosphoric acid. >, and the other part 27 (hereinafter referred to as In liquid part) was treated with RN liquid, and this lyophilic part 26 was used to impregnate and retain phosphoric acid.Specifically, The liquid repellent portion 27 is made of fluororesin (for example, PT
PE) is impregnated with a fine dispersion liquid at a high concentration, the lyophilic part 26 is impregnated with a low concentration of this liquid, and the electrode base material 2l is dried. A Ja liquid region 27 and a lyophilic region 26 were formed by the burning process. [Invention tries to solve it! If) The ribbed electrode base material of such a phosphoric acid fuel cell is formed into a ribbed plate by homogeneously pressurizing carbon fiber chips with the same diameter and a binder. Or, since the rib part is formed or processed by mechanical cutting from a shaped ribless plate, the rib part and the lyophilic part 26 at its base and the other leprosy part 27 have the same diameter. It is made of fiber chip material. Further, the flat plate that is the material from which the electrode base material 21 is formed is formed by arranging carbon fiber chips into a plate shape and pressurizing it, but the carbon fibers are generally arranged so as to be oriented in the direction of a flat surface. ．． Therefore, the phosphoric acid impregnated in the lyophilic part 26 tends to move in the planar direction along the carbon fiber due to capillary action, and when the fuel cell is operated for a long time, the phosphoric acid moves horizontally from the lyophilic part 26. It also entered the liquid-repellent portion 27, causing deterioration of the power generation characteristics of the fuel cell. In other words, phosphoric acid is
If it moves to 7, the phosphoric acid in the matrix supported on the electrode becomes insufficient, and cross leakage of fuel gas and air occurs, deteriorating the power generation characteristics. This invention was made in view of this point, and its purpose is to provide a ribbed electrode base material that can be impregnated with an electrolytic solution for a long time and improve the operational reliability of a fuel cell. [Means for Solving the Problems] In order to solve the above problems, according to the present invention, the carbon fibers are used in a phosphoric acid fuel cell, are composed of a comb-shaped rib portion and a flat plate portion serving as a substrate thereof, and are made of carbon fibers. and a binder, wherein the diameter of the carbon fiber used in the rib portion is smaller than the diameter of the carbon fiber used in the flat plate portion, and the flat plate portion includes a rib portion and a binder. There shall be a plurality of holes penetrating the flat plate part from the base of the rib to which the flat plate part joins, and whose diameter is smaller than the width of the rib. [Function] This invention uses a carbon fiber chip material with a small diameter as a material for the rib portion forming a comb shape in a ribbed electrode base material that constitutes a single cell of a phosphoric acid fuel cell.
Because we used carbon fiber chips with a larger diameter than the ribs for the flat plate that serves as the substrate that supports the ribs, the ribs have a greater ability to retain electrolyte infiltration than the flat plate.
In addition, we provided a hole that penetrates the flat plate part from the base part, which is the root of the rib part, so that this hole becomes a flow path for the electrolyte held in the rib part and the electrolyte solution impregnated in the matrix. The parts, pores, and matrix are communicated by the electrolyte. Therefore, the ribs remain impregnated with electrolyte for a long time, and there is no shortage of matrix electrolyte even if the fuel cell is operated for a long time. [Example] This invention will be explained below based on an example. FIG. 1 is a perspective view of an embodiment of the ribbed electrode base material for fuel cells according to the present invention. In this figure, the electrode base material 1 penetrates through a rib portion 4 shown by diagonal lines, which is made up of a groove 2 and a rib 3. It consists of a flat plate part 5 having a hole 8. The flat plate part 5 is provided with a plurality of holes 8 extending along the rib 3 and passing through the flat plate part 5 from the base of the rib 3. As an example, the rib portion 4 is mainly made of carbon fiber chips with an average diameter of 20 microns, mixed with 5% phenol resin as a binder, and the flat plate portion 5 is made of carbon fiber chips with an average diameter of 20 microns.
The main material is carbon fiber chips with an average diameter of 50ξcm, and 3% phenolic resin is mixed therein as a binder. FIG. 2 shows a cross-sectional view of this electrode base material, showing a state in which the hole 8 is provided to penetrate the flat plate portion 5 from the base, which is the root of the rib 3.
第３図はこの電極基材の平板部平面６ （第１図）の平
面図でリブ３の基部に複数個の孔８が配列されているこ
とを示したものである．
次にこの発明による電極基材の製作方法の一例を示す．
第４図はその製作金型の断面図を示し、まずこの図に示
した溝付き雌型１０の溝部１１ （斜線の部分）に前記
直径２０ミクロンの炭素繊維のチップに結合剤としてフ
ェノール樹脂５％混合した材料を充填する．この部分は
第１図で示した電極基材１のリブ部４に相当する．さら
に前述の直径２０ミクロンのチップを充填した溝部１１
の上部に直径５０ミクロンの炭素織雑のチップに結合剤
としてフェノール樹脂３％混合した材料を一様な厚さに
充填する．この部分は第１図で示した電極基材ｌの平板
部５に相当するので、その充填する厚さは平板部５に必
要な厚さになるように調整する．次に複数のピンｌ２を
付けた雄型１３を挿入し、加圧加熱して結合剤として配
合したフェノール樹脂で炭素繊維間を硬化バインドした
後、前記雄型１３と雌型１０とより成形物をとり出し、
これを不活性雰囲気中で徐々に加熱し、フェノール樹脂
を炭素化してリブ付電極基材１をつくる。FIG. 3 is a plan view of the flat surface 6 (FIG. 1) of the electrode base material, showing that a plurality of holes 8 are arranged at the base of the rib 3. Next, an example of a method for manufacturing an electrode base material according to the present invention will be shown.
FIG. 4 shows a cross-sectional view of the manufacturing mold. First, in the groove 11 (shaded area) of the grooved female mold 10 shown in this figure, phenol resin is applied as a binder to the carbon fiber chips having a diameter of 20 microns. % of mixed materials. This part corresponds to the rib part 4 of the electrode base material 1 shown in FIG. Furthermore, the groove portion 11 filled with the above-mentioned chips having a diameter of 20 microns.
A carbon woven chip with a diameter of 50 microns is filled with a material mixed with 3% phenolic resin as a binder to a uniform thickness. Since this part corresponds to the flat plate part 5 of the electrode base material l shown in FIG. 1, the thickness of filling is adjusted to the thickness required for the flat plate part 5. Next, a male mold 13 with a plurality of pins l2 is inserted, and after heating and pressurizing the carbon fibers to harden and bind them with a phenol resin blended as a binder, the male mold 13 and the female mold 10 are combined to form a molded product. Take out the
This is gradually heated in an inert atmosphere to carbonize the phenol resin to produce the ribbed electrode base material 1.
雄型ｌ３にとりつけたピンｌ２は円型や楕円型とするが
その最大径はリブ３の幅Ｗよりも小さくして、リブ３に
そって等間隔に配列する．このビン１２は電極基材１の
孔８を形成させるものであるから、第３図に示したと同
様に各リブ毎に等間隔で複数個配置する．またビン１２
の長さ寸法２は１ｔ極基材ｌの平板部５を貫通しリブ３
の根元に達する長さとし、この形状はすでに第２図の符
号８で示した通りである．フェノール樹脂を加熱して炭
素化した後の電極基材１は、リブ部４を上にして溝２よ
りＰＴＦＨのディスバージッン液をそそぎ、同時に平板
部平ｌＨ６の下方よりもディスパージッン液を吸引させ
て平板部５の摘液処理をするが、リブ３には摘液処理は
しない．
かくして電極基材１はリブ部４には電解液リン酸の含浸
特性を有するように、平板部５は貫通する孔８を除いて
撥液性になるように製作できて、リブ部４に蓄えられた
リン酸が孔８を通り電極を通過してマトリソクスに到達
しマトリンクスで不足したリン酸を補給し、またマトリ
ックスで余分となったリン酸をリブ部４で含浸保持させ
るには、孔８に親液性の物！（例えばマトリックスと同
等の物質）で出来た含浸材を充填する．そして孔８に接
する電極部分には電解液通路の妨げとなる触媒を配設し
ない構造とする．これでリブ部４に蓄えられたリン酸と
マトリックスのリン酸とは孔８を介して連遣し、＃！料
電池の運転に供することができる．
〔発明の効果〕
この発明は前述のようにリン酸形燃料電池に使用される
リブ付き電極基材において、リブ部と平板部とで使用す
る炭素織雑の直径をかえて、リブ部では小さい直径のも
のを、平板部では大きい直径のものを使用したのでリブ
部はリン酸を吸収し易い。またリブの根元の基部より平
板部を貫通した孔は、リブ部に蓄えた電解液のリン酸と
マトリックスに保持されているリン酸とを連通させてリ
ン酸の移動を安易にする．さらにこの部分の孔に含浸材
（マトリンクスと同等の物質）を充填することによりリ
ン酸の保持力を高めることができる．また平板部をｔｎ
液性処理することにより、リブ部から平板部へのリン酸
の移動を阻止できて、長時間にわたってリブ部にリン酸
を含漫保持させることができる．The pins l2 attached to the male die l3 are circular or oval in shape, but their maximum diameter is smaller than the width W of the rib 3, and they are arranged at equal intervals along the rib 3. Since the bottles 12 are used to form the holes 8 in the electrode base material 1, a plurality of bottles 12 are arranged at equal intervals for each rib, as shown in FIG. Also, bottle 12
The length dimension 2 of the rib 3 passes through the flat plate part 5 of the 1t pole base material l.
The length is set to reach the root of , and its shape is already shown with reference numeral 8 in Fig. 2. After heating and carbonizing the phenol resin, the electrode base material 1 is made to have the rib portion 4 facing up, and a dispersing liquid of PTFH is poured from the groove 2, and at the same time, the dispersing liquid is sucked from below the flat plate portion 1H6. Then, the flat plate portion 5 is subjected to liquid removal treatment, but the rib 3 is not subjected to liquid removal treatment. In this way, the electrode base material 1 can be manufactured so that the rib portion 4 has the property of impregnating the electrolytic solution phosphoric acid, and the flat plate portion 5 is made liquid repellent except for the penetrating hole 8, so that the rib portion 4 has the property of impregnating the electrolytic solution phosphoric acid. The phosphoric acid passed through the hole 8 passes through the electrode and reaches the matrix to replenish the phosphoric acid lacking in the matrix, and the rib portion 4 is impregnated with excess phosphoric acid to retain it. Things that are lyophilic to! Fill with an impregnating material made of (for example, a substance equivalent to the matrix). The structure is such that the electrode portion in contact with the hole 8 is not provided with a catalyst that would obstruct the electrolyte passage. The phosphoric acid stored in the rib portion 4 and the phosphoric acid in the matrix are now fed together through the holes 8, and #! It can be used to operate a power battery. [Effects of the Invention] As mentioned above, in the ribbed electrode base material used in phosphoric acid fuel cells, the diameter of the carbon weave used in the rib portion and the flat plate portion is changed, and the diameter of the carbon weave is smaller in the rib portion. Since a larger diameter one was used for the flat plate part, the rib part easily absorbs phosphoric acid. In addition, the holes penetrating the flat plate from the base of the rib allow the phosphoric acid in the electrolyte stored in the rib to communicate with the phosphoric acid held in the matrix, facilitating the movement of phosphoric acid. Furthermore, the retention of phosphoric acid can be increased by filling the pores in this area with an impregnating material (a substance equivalent to Matrix). Also, the flat plate part is tn
The liquid treatment can prevent the movement of phosphoric acid from the ribs to the flat plate, allowing the ribs to remain saturated with phosphoric acid for a long period of time.
第１図はこの発明になるリブ部と平板部とからなる燃料
電池のリブ付き電極基材の斜視図、第２図は平板部を貫
通する孔を説明する断面図、第３図は平板部に配列した
孔の位置の例を示す平面図、第４図はこの発明になるリ
ブ付き電極基材を製作する金型の例を示す断面図、第５
図は従来例になるリブ付き電極基材を示す斜視図である
．１：電極基材、２：溝、３ニリブ、４：リブ部、５：
平板部、６：平板部平面、８；孔、１０：雌型、１１：
溝部、１２：ピン、１３：雄型．第１ 図
８
第２図
Ｉ２
ｌ３慮竺
第４月FIG. 1 is a perspective view of a ribbed electrode base material for a fuel cell comprising a rib portion and a flat plate portion according to the present invention, FIG. 2 is a sectional view illustrating a hole penetrating the flat plate portion, and FIG. 3 is a flat plate portion. FIG. 4 is a plan view showing an example of the positions of the holes arranged in FIG.
The figure is a perspective view showing a conventional ribbed electrode base material. 1: Electrode base material, 2: Groove, 3 ribs, 4: Rib portion, 5:
Flat plate part, 6: Flat plate part plane, 8; Hole, 10: Female mold, 11:
Groove, 12: Pin, 13: Male type. Figure 1 Figure 8 Figure 2 I2 l3 Examination 4th month
Claims (1)
基板となる平板部とからなり、かつ炭素繊維と結合剤と
で形成される電極基材であって、前記リブ部に使用され
る炭素繊維の直径が平板部に使用される炭素繊維の直径
よりも小さく、かつ平板部には、リブ部と平板部の接合
するリブの基部より平板部を貫通し、その径がリブの幅
寸法よりも小さい複数個の孔を有することを特徴とする
燃料電池用リブ付き電極基材。1) An electrode base material used in a phosphoric acid fuel cell, consisting of a comb-shaped rib part and a flat plate part serving as the substrate thereof, and made of carbon fiber and a binder, which is used for the rib part. The diameter of the carbon fiber used in the flat plate part is smaller than that of the carbon fiber used in the flat plate part, and in the flat plate part, the carbon fiber penetrates the flat plate part from the base of the rib where the rib part and the flat plate part join, and its diameter is equal to the width of the rib. A ribbed electrode base material for a fuel cell, characterized by having a plurality of holes smaller than the size of the electrode base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1186963A JPH0353458A (en) | 1989-07-19 | 1989-07-19 | Electrode base material with rib for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1186963A JPH0353458A (en) | 1989-07-19 | 1989-07-19 | Electrode base material with rib for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353458A true JPH0353458A (en) | 1991-03-07 |
Family
ID=16197792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1186963A Pending JPH0353458A (en) | 1989-07-19 | 1989-07-19 | Electrode base material with rib for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006252836A (en) * | 2005-03-09 | 2006-09-21 | Tokyo Electric Power Co Inc:The | Manufacturing method of electrode for solid oxide fuel cell |
-
1989
- 1989-07-19 JP JP1186963A patent/JPH0353458A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006252836A (en) * | 2005-03-09 | 2006-09-21 | Tokyo Electric Power Co Inc:The | Manufacturing method of electrode for solid oxide fuel cell |
| JP4626756B2 (en) * | 2005-03-09 | 2011-02-09 | 東京電力株式会社 | Method for producing electrode for solid oxide fuel cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0872907B1 (en) | Fuel cell | |
| AT389020B (en) | Fuel cell | |
| DE60213271T2 (en) | SEPARATOR FOR FUEL CELL AND METHOD FOR THE PRODUCTION THEREOF | |
| EP1336999A1 (en) | High polymer electrolyte fuel cell | |
| EP3231916B1 (en) | Nonwoven carbon fiber fabric, process for producing nonwoven carbon fiber fabric, and polymer electrolyte membrane fuel cell | |
| US7625661B2 (en) | Diffusion media with continuous micro-porous layers incorporating non-uniformity | |
| US6492054B1 (en) | Polymer electrolyte fuel cell including a water-retaining layer on a ribbed plate | |
| US20040170886A1 (en) | Fuel cell and material of gas diffusion layer | |
| KR20150027132A (en) | Fuel cell gas diffusion layer and method for forming same | |
| JP2006331786A (en) | Electrode material for fuel cell, and manufacturing method thereof | |
| JP3106554B2 (en) | Solid polymer electrolyte fuel cell and method for supplying water and gas contained in the membrane | |
| DE102004053589A1 (en) | Fuel cell with a stack structure | |
| JPH0353458A (en) | Electrode base material with rib for fuel cell | |
| JPS5848366A (en) | Fuel cell | |
| EP0262961B1 (en) | Fuel cell with electrolyte matrix assembly | |
| KR100517586B1 (en) | Fuel cell | |
| JPH0437545B2 (en) | ||
| JPS624831B2 (en) | ||
| CN115602868A (en) | Fuel cell gas diffusion layer, fuel cell and preparation method of gas diffusion layer | |
| JPS5946762A (en) | Plate for fuel cell | |
| DE112021000318T5 (en) | DEFC MEMBRANE ELECTRODE WITH HIGH EFFICIENCY WATER AND HEAT MANAGEMENT CAPABILITIES AND ASSOCIATED MANUFACTURING PROCESS | |
| JPH01159965A (en) | Matrix type fuel cell | |
| JPS6029190B2 (en) | Method for impregnating electrolyte into the matrix of matrix fuel cells | |
| JPS62268064A (en) | Fuel cell | |
| JPS61185866A (en) | Fuel cell |