JP2020021721A - 燃料電池用平板型膜電極接合体の製造方法及びこれによって製造された燃料電池用平板型膜電極接合体 - Google Patents
燃料電池用平板型膜電極接合体の製造方法及びこれによって製造された燃料電池用平板型膜電極接合体 Download PDFInfo
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Abstract
Description
12 電極
13 電解質膜
14 サブガスケット
15 空隙(電極と電解質膜間の境界)
100 膜電極接合体
110 基材
120 電極
130 アノード側イオノマー膜
131 第1イオノマー膜
132 第2イオノマー膜
140 カソード側イオノマー膜
141 第3イオノマー膜
142 第4イオノマー膜
150 電解質膜
160 強化層
170 サブガスケット
A カソード用電極複合体
B アノード用電極複合体
Claims (20)
- 基材上に所定間隔で離隔した複数の電極を形成する段階、
前記電極間の空間を埋めるとともに前記電極を覆うように前記基材上にイオノマー膜を形成して電極複合体を得る段階、
電解質膜の両面に前記電解質膜とイオノマー膜が接するように前記電極複合体を積層して接合する段階、
前記基材を除去して膜電極接合体を得る段階、及び
前記膜電極接合体の両表面に前記電極の縁部とイオノマー膜を覆うようにサブガスケットを接合する段階、
を含む、燃料電池用平板型膜電極接合体の製造方法。 - 基材上に所定間隔で離隔した複数の電極を形成する段階、
前記電極間の空間を埋めるとともに前記電極を覆うように前記基材上にイオノマー膜を形成して電極複合体を得る段階、
いずれか一電極複合体のイオノマー膜と電解質膜の一面が接するように前記電解質膜を接合する段階、
前記電解質膜の他面と他の一電極複合体のイオノマー膜が接するように前記他の一電極複合体を積層して接合する段階、
前記基材を除去して膜電極接合体を得る段階、及び
前記膜電極接合体の両表面に前記電極の縁部とイオノマー膜を覆うようにサブガスケットを接合する段階、
を含む、燃料電池用平板型膜電極接合体の製造方法。 - 前記基材は、ポリエチレンテレフタレート、ポリエチレンナフタレート及びポリイミド材質からなる群から選択された1種以上である、請求項1又は2に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記電極複合体を積層して接合する段階は、80〜120℃の温度に加熱されたロールプレスで熱圧着させる、請求項1に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記他の一電極複合体を積層して接合する段階は、80〜120℃の温度に加熱されたロールプレスで熱圧着させる、請求項2に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記膜電極接合体の電極は、前記電解質膜を挟んで対向するアノード及びカソードを含み、
前記アノードは厚さが1〜5μmであり、前記カソードは厚さが5〜15μmである、請求項1又は2に記載の燃料電池用平板型膜電極接合体の製造方法。 - 前記イオノマー膜は前記基材上にイオノマー溶液を塗布して形成し、前記イオノマー溶液は、固形分含量が10〜50重量%であり、25℃の温度での粘度が10〜50cPである、請求項1又は2に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記イオノマー溶液は、過フッ素化スルホン酸(Perfluorinated Sulfonic Acid)高分子及び有機溶媒を含む、請求項7に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記イオノマー膜は、前記基材上にイオノマー溶液を塗布した後、80℃で5分〜30分間乾燥し、160℃で5分〜30分間熱処理して形成する、請求項1又は2に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記電極上に形成されたイオノマー膜の厚さは前記電極の厚さより厚い、請求項6に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記アノード側に形成されるイオノマー膜は厚さが2〜8μmであり、前記カソード側に形成されるイオノマー膜は厚さが6〜18μmである、請求項10に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記電解質膜は、強化層、及び前記強化層に含浸されたイオノマー、を含む、請求項1に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記電解質膜は強化層である、請求項2に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記強化層は、膨脹ポリテトラフルオロエチレン(Expanded Polytetrafluoroethylene、e−PTFE)からなる、請求項12又は13に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記基材が除去された膜電極接合体の両表面は、前記イオノマー膜内に前記複数の電極が埋め込まれた構造の平板型である、請求項1又は2に記載の燃料電池用平板型膜電極接合体の製造方法。
- アノード、前記アノードと電解質膜の間に介在され、前記アノードより広い面積で形成された第1イオノマー膜、及び前記アノードと同層に位置し、前記アノードと第1イオノマー膜によって形成された空間を埋める第2イオノマー膜、を含むアノード複合体;
カソード、前記カソードと電解質膜の間に介在され、前記カソードより広い面積で形成された第3イオノマー膜、及び前記カソードと同層に位置し、前記カソードと第3イオノマー膜によって形成された空間を埋める第4イオノマー膜、を含むカソード複合体;
前記アノード複合体とカソード複合体の間に介在された電解質膜;及び
前記アノードの縁部及び第2イオノマー膜と前記カソードの縁部及び第4イオノマー膜上に接合されたガスケット;
を含む、燃料電池用平板型膜電極接合体。 - 前記電解質膜は強化層であるか、あるいは強化層及び前記強化層に含浸されたイオノマーを含む、請求項16に記載の燃料電池用平板型膜電極接合体の製造方法。
- 前記強化層は厚さが1〜5μmである、請求項16に記載の燃料電池用平板型膜電極接合体。
- 前記アノードは厚さが1〜5μmであり、前記カソードは厚さが5〜15μmである、請求項16に記載の燃料電池用平板型膜電極接合体。
- 前記第1及び第3イオノマー膜は厚さがそれぞれ1〜3μmである、請求項16に記載の燃料電池用平板型膜電極接合体。
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US20080118802A1 (en) | 2006-11-16 | 2008-05-22 | Peter Szrama | Fully Catalyzed Membrane Assembly With Attached Border |
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KR101483124B1 (ko) | 2007-05-21 | 2015-01-16 | 삼성에스디아이 주식회사 | 다공성 전극 촉매층을 갖는 막 전극 접합체, 그 제조 방법및 이를 채용한 연료전지 |
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EP2254181B1 (en) * | 2008-03-21 | 2012-10-24 | Asahi Glass Company, Limited | Membrane electrode assembly for solid polymer fuel cell, and solid polymer fuel cell comprising the same |
JP5552766B2 (ja) | 2009-07-21 | 2014-07-16 | 大日本印刷株式会社 | エッジシール付き触媒層−電解質膜積層体、電極−電解質膜接合体、固体高分子形燃料電池、触媒層−電解質膜積層体の製造方法、及びエッジシール付き触媒層−電解質膜積層体の製造方法 |
JP2014502776A (ja) | 2010-12-20 | 2014-02-03 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 燃料電池の1種以上の電極として使用するための高分子量アイオノマーおよびイオン伝導性組成物 |
DE102013205284B4 (de) * | 2012-03-30 | 2021-12-30 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Elektrodenanordnung mit integrierter Verstärkungsschicht |
JP2014154350A (ja) | 2013-02-08 | 2014-08-25 | Toyota Motor Corp | 燃料電池とその製造方法 |
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