Metal air batteries offer the opportunity for unprecedented energy density improvements relative to conventional battery technologies.  Slow kinetics of the oxygen reduction reaction is one of the most significant impediments to development of viable metal air battery technologies.  Counter to conventional air electrode fabrication strategies, our preparation method positions all of the catalyst nanoparticles on the outer surface of the composite electrode, allowing facile access of oxygen gas molecules to the catalyst particle surfaces.  Electrodeposition is employed as a fabrication method, generating a composite that is conductive throughout.  An additional advantage of our strategy is the ability to easily generate three-dimensionally structured composites via use of three dimensional substrates.

Composite air electrode for metal-air batteries

245th National Meeting (2013)

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