Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview

다국어 초록 (Multilingual Abstract)

The development of efficient platinum‐free catalysts for electrocatalytic oxygen reduction reaction (ORR) is one of the main challenges in the fuel cell research. Silver‐based materials are highly active towards ORR in alkaline conditions and recent achievements in improving the performance of anion exchange membrane fuel cells (AEMFCs) have provoked many scientists to study these catalysts. This minireview is focused on the ORR performance of monometallic Ag catalysts and Ag‐based composites, the electrochemical oxygen reduction behaviour of Ag‐containing alloys is outside the scope of this review. The effect of the morphology of Ag nanostructures on catalysts’ ORR activity and pathway is discussed and the role of the support material is described. The performance of AEMFCs using Ag‐based cathode catalysts is also reviewed.
With a silver lining: electrocatalytic O2 reduction by monometallic Ag catalysts and Ag‐based composites is reviewed. The effect of catalyst morphology on the ORR activity and pathway as well as the role of the support material are described. The AEMFC results obtained using silver‐based cathodes are summarised.