期刊
CHEMELECTROCHEM
卷 8, 期 9, 页码 1653-1657出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.202100331
关键词
hydrogen evolution; supramolecular chemistry; porphyrins; porous organic cages; electrocatalysis
The newly developed supramolecular porous organic cage platform shows high efficiency in catalyzing the electrochemical hydrogen evolution reaction from water at neutral pH, exhibiting significant improvement compared to a planar cobalt porphyrin analog and demonstrating excellent catalytic performance in HER.
We report a supramolecular porous organic cage platform composed of cobalt porphyrins for catalyzing the electrochemical hydrogen evolution reaction (HER) from water at neutral pH. Owing to its permanent porosity, the supramolecular structure yields a catalyst film with a fivefold increase in the number of electrochemically active cobalt atoms and an improvement in Tafel slope from 170 mV/decade to 119 mV/decade compared to a planar cobalt porphyrin analog, reaching activities over 19,000 turnovers for HER over a 24-hour period with 100 % Faradaic efficiency.
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