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Si Hyoung Oh and Linda F. Nazar Oxide Catalysts for Rechargeable High-Capacity Li–O2 Batteries Advanced Energy Materials 2

Version of Record online: 11 JUL 2012 | DOI: 10.1002/aenm.201200018

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Nanocrystalline pyrochlore oxides serve as good electrocatalysts for the Li–O2 cell, producing rechargeable capacities up to 1100 mAh g−1 of the total cathode mass (including carbon, catalyst, binder and O2). Performance is improved by either depositing gold nanoparticles onto the pyrochlore to improve the oxygen-reduction properties, or by directly crystallizing 10 nm pyrochlore particles onto a carbon support to form a 5 wt% oxide/composite cathode, which improves the mass activity and affords efficient oxygen reduction.

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