JP6672473B2 - 高分子電解質燃料電池用ナノ構造電極及びこの製造方法 - Google Patents
高分子電解質燃料電池用ナノ構造電極及びこの製造方法 Download PDFInfo
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
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Description
(実施例)
シリカエアロゲル0.2gと20%アイオノマー溶液(Dupont、D2021)6.5gと追加溶媒9gを混合して溶液1を製造した。市販触媒Pt/C(Tanaka)3gを浸し溶液15gに浸漬させて分散し、溶液2を製造した。混合されたエアロゲル−アイオノマー溶液1に市販触媒の溶液2を投与して、攪拌及び超音波分散法にて均一に混合し、エアロゲル−アイオノマー−触媒混合電極形成用組成物を製造した。
市販触媒Pt/C(Tanaka)3gを浸し溶液15gに浸漬させた。浸漬された混合触媒に20%アイオノマー溶液6.5gと追加溶媒9gを添加して電極形成用組成物を製造した。
上記実施例及び比較例において製造された電極形成用組成物を、ポリイミド離型フィルムに、コーティング速度10mm/s、コーティング厚さ100μmの条件でバーコーティングした後、60℃で3時間の間乾燥させて電極を製造した。
上記実施例において製造された電極形成用組成物をポリイミド離型フィルムにコーティング速度10mm/s、コーティング厚さ50μmの条件でバーコーティングした後、60℃、3時間の間乾燥させて電極を製造した。
上記製造例2−1において上記実施例の電極形成用組成物を用いて製造された膜−電極接合体に対して、相対湿度がそれぞれRH100及びRH50である条件で、電極の電圧電流密度の出力特性を評価し、その結果を図2に示した。
上記製造例2−1において上記比較例の電極形成用組成物を用いて製造された膜−電極接合体(比較例、触媒含量0.30mg)と、上記製造例2−2において上記実施例の電極形成用組成物を用いて製造された膜−電極接合体(実施例、触媒含量0.15mg)に対して、電極から出力される電圧と電流とを測定し、電圧−電流密度の出力特性(放電性能)を比較評価して、その結果を図3に示した。
Claims (15)
- ナノ多孔性エアロゲル(aerogel)及び前記エアロゲルの表面を覆うアイオノマーを含む3次元ナノ構造体と、
前記3次元ナノ構造体に分散された触媒と、
を含み、
前記エアロゲルの表面は、疏水性官能基で置換された電極。 - 前記3次元ナノ構造体は、前記エアロゲルを複数個で含み、
前記エアロゲルは、互いに連結されて3次元ナノ構造を形成し、
前記アイオノマーは、前記3次元ナノ構造の形状を有するエアロゲルの表面を覆う請求項1に記載の電極。 - 前記エアロゲルは、シリカエアロゲルである請求項1に記載の電極。
- 前記エアロゲルは、表面積が100〜1000m2/gであり、細孔サイズが1〜20nmである請求項1に記載の電極。
- 前記エアロゲルは、前記電極の全体に対して1〜8重量%で含まれる請求項1に記載の電極。
- 前記疏水性官能基は、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、及びこれらの組み合わせからなる群より選ばれるいずれか1つである請求項1に記載の電極。
- 前記アイオノマーは、前記疏水性官能基を介して前記エアロゲルに結合される請求項1に記載の電極。
- 前記アイオノマーは、疏水性主鎖と親水性側鎖を含み、
前記アイオノマーの疏水性主鎖が前記エアロゲルの疏水性官能基に向かい、
前記アイオノマーの親水性側鎖が前記触媒に向かうように配置される請求項1に記載の電極。 - 前記アイオノマーの親水性側鎖は、スルホン酸基、カルボキシル酸基、リン酸基、ホスホニン酸基、及びこれらの誘導体からなる群より選ばれるカチオン伝導性基を含む請求項8に記載の電極。
- 前記触媒は、前記3次元ナノ構造体に結合された請求項1に記載の電極。
- 前記触媒は、触媒金属粒子単独または担体に担持された触媒金属粒子を含む請求項1に記載の電極。
- 表面が疏水性官能基で置換されたナノ多孔性エアロゲル(aerogel)を用意するステップと、
前記エアロゲルとアイオノマーとを混合して混合物を製造するステップと、
前記混合物に触媒を添加して電極形成用組成物を製造するステップと、
前記電極形成用組成物をコーティングして電極を製造するステップと、
を含む電極の製造方法。 - 前記電極を製造するステップの後に、前記電極を高分子電解質膜に転写するステップをさらに含む請求項12に記載の電極の製造方法。
- 前記転写は、100〜150℃、1〜10MPaでなされる請求項13に記載の電極の製造方法。
- 請求項1に記載の電極を含む燃料電池。
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PCT/KR2017/003264 WO2017171328A1 (ko) | 2016-03-30 | 2017-03-27 | 고분자 전해질 연료 전지용 나노구조 전극 및 이의 제조 방법 |
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