Intermetallic L10-NiPtAg catalysts for oxygen reduction reaction
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsKecheng Wei, Tomoyuki Nagai, Li Qin Zhou, Hongfei Jia
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Abstract
An electrode catalyst for an oxygen reduction reaction including intermetallic L10-NiPtAg alloy nanoparticles having enhanced ORR activity and durability. The catalyst including intermetallic L10-NiPtAg alloy nanoparticles is synthesized by employing silver (Ag) as a dopant and annealing under specific conditions to form the intermetallic structure. In one example, the intermetallic L10-NiPtAg alloy nanoparticles are represented by the formula: NixPtyAgz wherein 0.4≤x≤0.6, 0.4≤y≤0.6, z≤0.1.
Claims5
An electrode catalyst for oxygen reduction reaction comprising intermetallic L10-NiPtAg alloy nanoparticles, having mass activity (MA) of greater than 1000 A/gPt.
Dependencies are inferred from the claim text.