A Highly Active and Support‐Free Oxygen Reduction Catalyst Prepared from Ultrahigh‐Surface‐Area Porous Polyporphyrin

Ein Elektrokatalysator für die Sauerstoffreduktion, der kein Edelmetall enthält, wurde durch thermische Aktivierung eines porösen Polyporphyrins mit extrem großer Oberfläche hergestellt. Die PEM-Brennstoffzellen, die mit solchen Katalysatoren angefertigt wurden, zeigten exzellente Strom- und Leistungsdichten. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.