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Jeffrey W. Long, Christopher N. Chervin, Nathan W. Kucko, Eric S. Nelson and Debra R. Rolison Dual-Function Air Cathode for Metal–Air Batteries with Pulse-Power Capability Advanced Energy Materials 3

Version of Record online: 28 JAN 2013 | DOI: 10.1002/aenm.201200921

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Air-breathing electrodes comprising carbon nanofoam papers coated with nanoscale manganese oxide (MnOx) exhibit two distinct functionalities – electrocatalysed oxygen reduction plus faradaic pseudocapacitance. Pseudocapacitance provides seconds-long discharge pulses at current densities that exceed oxygen reduction alone, even providing pulse power for one anaerobic cycle. The MnOx spontaneously recharges between pulses via reaction with oxygen while operating as an air cathode.

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