Abstract
AbstractSustainably biotemplated palladium catalysts generated on different carbon‐based support materials are examined for durability under electrochemical (oxidative) and mechanical‐stress conditions. Biotemplated catalysts on carbon paper under both stresses retain 95 % (at 0.6 V) of the initial catalytic activity as opposed to 70 % for carbon cloth and 60 % for graphite. Graphite electrodes retain 95 % of initial catalytic activity under a single stress. Using electrodeposited polyaniline (PANI) and polydimethylsiloxane binder increases the current density after the stress tests by 22 %, as opposed to a 30 % decrease for Nafion. PANI‐coated electrodes retain more activity than carbon‐paper electrodes under elevated mechanical (94 versus 70 %) or increased oxidative (175 versus 62 %) stress. Biotemplated catalytic electrodes may be useful alternatives to synthetically produce catalysts for some electrochemical applications.
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