JP2010257715A - 膜電極接合体及びその製造方法並びに固体高分子形燃料電池 - Google Patents
膜電極接合体及びその製造方法並びに固体高分子形燃料電池 Download PDFInfo
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- JP2010257715A JP2010257715A JP2009105565A JP2009105565A JP2010257715A JP 2010257715 A JP2010257715 A JP 2010257715A JP 2009105565 A JP2009105565 A JP 2009105565A JP 2009105565 A JP2009105565 A JP 2009105565A JP 2010257715 A JP2010257715 A JP 2010257715A
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- polymer electrolyte
- membrane
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- electrode assembly
- electrode
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Classifications
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
【解決手段】固体高分子電解質膜と、固体高分子電解質膜の両面に形成された一対の高分子電解質、触媒物質及び電子伝導性物質を有する複合触媒粒子と高分子電解質粒子からなる電極触媒層と、備えることを特徴とする膜電極接合体。
【選択図】図1
Description
触媒物質として白金を50wt%担持したケッチェンブラックを用いて、純水及びデュポン社製Nafion(登録商標)の溶液をFritsch社製Pulverisette7の遊星型ボールミルで分散処理を行った。ボールミルのポット及びボールには、ジルコニア製のものを用いて触媒インクを得た。このとき、ケッチェンブラックの重量(C)1に対して、Nafion溶液中の電解質重量(N)が0.3となるように調整した。
調整した触媒インクを用いて、スプレードライヤ法により、触媒インクを造粒し、複合触媒粒子を作製した。噴霧温度は80℃であり、送液ガスはN2を用いた。得られた複合触媒粒子を分級した。得られた複合触媒粒子径を走査型電子顕微鏡にて観察を行ったところ、平均粒子径が4μmであった。また、高分子電解質の分散溶液をスプレードライすることで、高分子電解質粒子を作製した。
転写基材上に、複合触媒粒子と高分子電解質粒子を混合塗布し電極触媒層を形成した。このとき、単位面積あたりの電極触媒層のPt(白金)質量が0.3mg/cm2となるように電極触媒層を形成した。形成後、所定の電極サイズに打ち抜き、転写シートとした。
固体高分子電解質膜1としては、プロトン伝導性高分子膜、デュポン社製Nafion(登録商標)212を用いた。固体高分子電解質膜1の両面に、準備をした転写基材上に電極触媒層を備える転写シートで挟持し、130℃、6.0MPaの条件で熱圧着を行い、転写基材のみを剥がし、膜電極接合体12を得た。
実施例と同様の触媒インクを用いて、転写基材上に触媒インクを塗布した後、溶媒を乾燥させ電極触媒層を形成した。このとき単位面積あたりのPt(白金)質量が0.3mg/cm2となるように電極触媒層を形成した。固体高分子電解質膜1としては、プロトン伝導性高分子膜、デュポン社製Nafion212を用いた。固体高分子電解質膜1の両面に、先に準備をした転写基材上に電極触媒層を順に備える転写シートで挟持し、130℃、6.0MPaの条件で熱圧着を行い、転写基材のみを剥がし、膜電極接合体12を得た。得られた膜電極接合体12の両面に、実施例と同様に、ガス拡散層としてカーボンペーパを配置し、更に、一対の焼成カーボン製のセパレータ10で挟持し、単セルの固体高分子形燃料電池13を作製した。
東陽テクニカ社製GFT−SG1の燃料電池測定装置にて発電特性評価を行った。燃料として水素ガス、酸化剤として空気を使用した。
Claims (11)
- 固体高分子電解質膜と、
前記固体高分子電解質膜の両面に形成された一対の高分子電解質、触媒物質及び電子伝導性物質を有する複合触媒粒子と高分子電解質粒子からなる電極触媒層と、
備えることを特徴とする膜電極接合体。 - 前記一対の電極触媒層において、前記複合触媒粒子の平均粒子径が0.5μm以上20μm以下であることを特徴とする請求項1に記載の膜電極接合体。
- 前記一対の電極触媒層において、前記複合触媒粒子の平均粒子径が1μm以上10μm以下であることを特徴とする請求項1に記載の膜電極接合体。
- 前記一対の電極触媒層において、前記高分子電解質粒子の平均粒子径が100nm以上1μm以下であることを特徴とする請求項1乃至請求項3のいずれかに記載の膜電極接合体。
- 請求項1乃至請求項4のいずれかに記載の膜電極接合体が一対のガス拡散層で挟持され、さらに、前記一対のガス拡散層は一対のセパレータで挟持されることを特徴とする固体高分子形燃料電池。
- 固体高分子電解質膜を形成し、
高分子電解質と触媒物質と電子伝導性物質と溶媒を混合して触媒インクを作製して、前記高分子電解質が分散した高分子電解質溶液を作製し、
前記触媒インクをスプレードライにより、複合触媒粒子を造粒して、前記高分子電解質溶液をスプレードライすることで高分子電解質粒子を造粒し、
前記複合触媒粒子と前記高分子電解質粒子をそれぞれ所望の平均粒子径に分級し、
前記複合触媒粒子と前記高分子電解質粒子を混合して、前記固体高分子電解質膜の両面に前記一対の電極触媒層を形成することを特徴とする膜電極接合体の製造方法。 - 前記一対の電極触媒層において、前記複合触媒粒子の平均粒子径が0.5μm以上20μm以下であることを特徴とする請求項6に記載の膜電極接合体の製造方法。
- 前記一対の電極触媒層において、前記複合触媒粒子の平均粒子径が1μm以上10μm以下であることを特徴とする請求項6に記載の膜電極接合体の製造方法。
- 前記電極触媒層において、前記高分子電解質粒子の平均粒子径が100nm以上1μm以下であることを特徴とする請求項6乃至請求項8のいずれかに記載の膜電極接合体の製造方法。
- 請求項6乃至請求項9のいずれかに記載の膜電極接合体の製造方法により製造されることを特徴とする膜電極接合体。
- 請求項10に記載の膜電極接合体を一対のガス拡散層で挟持し、さらに、前記一対のガス拡散層を一対のセパレータで挟持することを特徴とする固体高分子形燃料電池の製造方法。
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JP2012190656A (ja) * | 2011-03-10 | 2012-10-04 | Toppan Printing Co Ltd | 膜電極接合体およびその製造方法並びに固体高分子形燃料電池 |
JP2012195232A (ja) * | 2011-03-17 | 2012-10-11 | Toppan Printing Co Ltd | 膜電極接合体およびその製造方法並びに固体高分子形燃料電池 |
JP2019220344A (ja) * | 2018-06-20 | 2019-12-26 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh | 膜電極接合体及び燃料電池の製造方法 |
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