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      Method Development to Evaluate the Oxygen Reduction Activity of High-Surface-Area Catalysts for Li-Air Batteries

      , ,
      Electrochemical and Solid-State Letters
      The Electrochemical Society

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          Platinum-gold nanoparticles: a highly active bifunctional electrocatalyst for rechargeable lithium-air batteries.

          PtAu nanoparticles (NPs) were shown to strongly enhance the kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable Li-O(2) cells. Li-O(2) cells with PtAu/C were found to exhibit the highest round-trip efficiency reported to date. During ORR via xLi(+) + O(2) + xe(-) --> Li(x)O(2), the discharge voltage with PtAu/C was considerably higher than that of pure carbon and comparable to that of Au/C. During OER via Li(x)O(2) --> xLi(+) + O(2) + xe(-), the charge voltages with PtAu/C fell in the range from 3.4 to 3.8 V(Li), which is slightly lower than obtained with Pt. It is hypothesized that PtAu NPs exhibit bifunctional catalytic activity, having surface Au and Pt atoms primarily responsible for ORR and OER kinetics in Li-O(2) cells, respectively.
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            Oxygen reduction on a high-surface area Pt/Vulcan carbon catalyst: a thin-film rotating ring-disk electrode study

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              An O2 cathode for rechargeable lithium batteries: The effect of a catalyst

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                Author and article information

                Journal
                ESLEF6
                Electrochemical and Solid-State Letters
                Electrochem. Solid-State Lett.
                The Electrochemical Society
                10990062
                2011
                2011
                : 14
                : 5
                : A70
                Article
                10.1149/1.3555071
                d71184b3-f88f-4c2d-b590-a6a15ded4d1a
                © 2011
                History

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