JP2019186183A - 燃料電池用の高耐久性電解質膜の製造方法 - Google Patents
燃料電池用の高耐久性電解質膜の製造方法 Download PDFInfo
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Abstract
Description
第1アイオノマー溶液は、スルホン化ポリイミド(sulfonated polyimide:S−PI)、スルホン化ポリアリールエーテルスルホン(sulfonated polyarylethersulfone:S−PAES)、スルホン化ポリエーテルエーテルケトン(sulfonated polyetheretherketone:S−PEEK)、ペルフルオロスルホン酸(Perfluorosulfonic acid:PFSA)、スルホン化ポリベンゾイミダゾール(sulfonated polybenzimidazole:S−PBI)、スルホン化ポリスルホン(sulfonated polysulfone:S−PSU)、スルホン化ポリスチレン(sulfonated polystyrene:S−PS)、スルホン化ポリホスファゼン(sulfonated polyphosphazene)及びそれらの混合物であってよい。本発明のアイオノマーは、互いに架橋結合して伝導性膜を形成した状態であってもよい。
このとき、乾燥は、60℃〜90℃の温度で5分〜30分間行う。好ましくは、60℃〜80℃の温度で乾燥を行うことが良い。乾燥の温度が60℃未満であれば、多孔性支持体の内部/外部から残留溶媒が十分に除去されず、乾燥に長い時間がかかるため不経済的になり得る。また、90℃を超えると、溶媒及びアイオノマーが蒸発する過程で不純物が生成されることがある。
(実施例)
(比較例)
2 搬送ローラー1
3 基材のアンワインダー(unwinder)ローラー
4 搬送ローラー2
5 電解質膜のリワインダー(rewinder)ローラー
6 第1アイオノマー溶液コーティング装置
7 放置区間
8 第2アイオノマー溶液コーティング装置
9 乾燥装置
10 基材
11 第1アイオノマー溶液が塗布された基材
12 多孔性支持体
13 多孔性支持体と基材とが合わせられる地点
14 第2アイオノマー溶液が塗布された多孔性支持体
Claims (14)
- 基材を準備する段階と、
上記基材上に第1アイオノマー(ionomer)溶液を塗布する段階と、
上記第1アイオノマー溶液上に多孔性支持体を投入して上記第1アイオノマー溶液を上記多孔性支持体に含浸させる段階と、
上記第1アイオノマー溶液が含浸した多孔性支持体を放置する段階と、
上記第1アイオノマー溶液が含浸した多孔性支持体上に第2アイオノマー溶液を塗布する段階と、
乾燥させる段階と、
を含む、燃料電池用の高耐久性電解質膜の製造方法。 - 上記基材がポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)、ポリイミド(PI)及びポリプロピレン(PP)から選ばれるいずれか一つである離型紙であることを特徴とする、請求項1に記載の燃料電池用の高分子電解質膜の製造方法。
- 第1アイオノマー溶液がスルホン化ポリイミド(sulfonated polyimide:S−PI)、スルホン化ポリアリールエーテルスルホン(sulfonated polyarylethersulfone:S−PAES)、スルホン化ポリエーテルエーテルケトン(sulfonated polyetheretherketone:S−PEEK)、ペルフルオロスルホン酸(Perfluorosulfonic acid:PFSA)、スルホン化ポリベンゾイミダゾール(sulfonated polybenzimidazole:S−PBI)、スルホン化ポリスルホン(sulfonated polysulfone:S−PSU)、スルホン化ポリスチレン(sulfonated polystyrene:S−PS)、スルホン化ポリホスファゼン(sulfonated polyphosphazene)及びそれらの混合物からなる群から選ばれるアイオノマーを含むことを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 第2アイオノマー溶液がスルホン化ポリイミド(sulfonated polyimide:S−PI)、スルホン化ポリアリールエーテルスルホン(sulfonated polyarylethersulfone:S−PAES)、スルホン化ポリエーテルエーテルケトン(sulfonated polyetheretherketone:S−PEEK)、ペルフルオロスルホン酸(Perfluorosulfonic acid:PFSA)、スルホン化ポリベンゾイミダゾール(sulfonated polybenzimidazole:S−PBI)、スルホン化ポリスルホン(sulfonated polysulfone:S−PSU)、スルホン化ポリスチレン(sulfonated polystyrene:S−PS)、スルホン化ポリホスファゼン(sulfonated polyphosphazene)及びそれらの混合物からなる群から選ばれるアイオノマーを含むことを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記多孔性支持体が、膨脹したポリテトラフルオロエチレン(e−PTFE)支持体であることを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液がバーコーティング、グラビアコーティング又はスロットダイコーティング方法によって塗布されることを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第2アイオノマー溶液がバーコーティング、グラビアコーティング又はスロットダイコーティング方法によって塗布されることを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液が含浸した多孔性支持体を18℃〜30℃で放置することを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液が含浸した多孔性支持体を0.1気圧(atm)〜1気圧(atm)で放置することを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液が含浸した多孔性支持体を5分〜10分間放置することを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液が含浸した多孔性支持体を放置した後、別の乾燥工程無しで上記多孔性支持体上に第2アイオノマー溶液を塗布することを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第1アイオノマー溶液が含浸した多孔性支持体を放置するが、上記第1アイオノマー溶液の溶媒が完全に乾燥する前に、上記多孔性支持体上に第2アイオノマー溶液を塗布することを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記乾燥させる段階を60℃〜80℃で5分〜30分間行うことを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
- 上記第2アイオノマー溶液を塗布する段階後に140℃〜160℃で5分〜30分間熱処理する段階をさらに含むことを特徴とする、請求項1に記載の燃料電池用の高耐久性電解質膜の製造方法。
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WO2015028426A1 (en) * | 2013-08-26 | 2015-03-05 | Agfa-Gevaert | A method for preparing a composite membrane |
JP2015076201A (ja) * | 2013-10-07 | 2015-04-20 | 旭化成イーマテリアルズ株式会社 | 高分子電解質膜の製造方法及び高分子電解質膜の製造装置 |
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US7989115B2 (en) * | 2007-12-14 | 2011-08-02 | Gore Enterprise Holdings, Inc. | Highly stable fuel cell membranes and methods of making them |
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