Palladium nanoparticles as catalysts for Li-O2 battery cathodes

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Geaney, Hugh
Collins, Gillian
Glynn, Colm
Holmes, Justin D.
O'Dwyer, Colm
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Electrochemical Society
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This report investigates the influence of electrolyte selection and the addition of Pd nanoparticle catalysts on the morphology of discharge products for Li-O2 battery cathodes. Super P carbon cathodes (on stainless steel current collectors) were subjected to single discharges at various applied currents (50 µA, 100 µA, 250 µA) using either a sulfolane/LiTFSI or TEGDME/LITFSI electrolyte. The morphologies of the discharge product were noted to be different for each electrolyte while there was also a clear variation with respect to applied current. Finally, the impact of adding 25% (by weight) Pd nanoparticle catalysts to the cathodes was investigated. The results obtained show clearly that the nature of discharge products for Li-O2 battery cathodes are strongly dependent on applied current, electrolyte choice and the addition of a catalyst material.
Cathodes , Applied current , Carbon cathode , Catalyst material , Current collector , Palladium nanoparticles , PD nano particle , Single discharges , Sulfolane , Catalysts , Electric batteries , Electrolytes , Lithium , Lithium batteries , Morphology , Nanoparticles
Geaney, H., Collins, G., Glynn, C., Holmes, J. D. and O'Dwyer, C. (2014) 'Palladium Nanoparticles as Catalysts for Li-O2 Battery Cathodes', ECS Transactions, 58(12), pp. 21-29. doi: 10.1149/05812.0021ecst
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