Geaney, H,Collins, G,Glynn, C,Holmes, JD,O'Dwyer, C,Johnson, CS,Veith, G,Mukerjee, S

Palladium Nanoparticles as Catalysts for Li-O-2 Battery Cathodes

BATTERY CHEMISTRIES BEYOND LITHIUM ION

2014

December

Validated

1

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LITHIUM-AIR BATTERIES TRANSMISSION ELECTRON-MICROSCOPY IN-SITU ALPHA-MNO2 NANORODS OXYGEN BATTERIES HIGH-CAPACITY EVOLUTION LI2O2 TEMPERATURE PERFORMANCE

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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-O-2 battery cathodes. Super P carbon cathodes (on stainless steel current collectors) were subjected to single discharges at various applied currents (50 mu A, 100 mu A, 250 mu A) 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-O-2 battery cathodes are strongly dependent on applied current, electrolyte choice and the addition of a catalyst material.

10.1149/05812.0021ecst