G135 氷点下起動時におけるPEFC多孔質電極内水分の凍結状態の微視的観察(PEFC(水分))

DOI Web Site

書誌事項

タイトル別名
  • G135 Microscopic Observation of Frozen State of Water in a Porous Electrode of PEFC during Cold Startup

抄録

During cold startup of polymer electrolyte fuel cell (PEFC), water freezing in a cathode porous electrode is a critical barrier to achieve high power density, because ice particles in the catalyst layer (CL) and gas diffusion layer (GDL) block oxygen transport to the active reaction sites. In this study, we investigate water behavior inside a cathode electrode of PEFC at low temperature operations using an optical diagnostic, and show the effect of the mechanism of water freezing on the characteristic of cell voltage. The results showed that ice formation in cathode electrode during cold startup is largely affected by GDL structure.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ