Abstract:

A novel non-Pt catalyst silver-molybdate electrocatalyst prepared by hydrothermal method was used for the oxygen

Graphical abstract

reduction reaction (ORR) in alkaline solution for the first time. These silver-molybdate electrocatalysts showed catalytic activity for ORR and higher durability than Pt/C catalyst. Such catalyst with advantages including facile synthesis, low cost and good durability could be a valuable catalyst for oxygen reduction reaction and be a potential candidate for application in alkaline fuel cells and metal–air batteries.

Key words: Silver-molybdate material; Oxygen reduction reaction; Alkaline solution

Conclusions:

In this study, novel silver molybdate materials prepared by the hydrothermal method were first used as electrocatalysts for ORR in alkaline solution. As compared to Pt/C, the silver molybdate showed better durability. By using Ag–Mo-22 as cathode catalyst, zinc–air battery had maximum power density of 87 mWcm^？2 at 0.872 V. Such facile synthesis, low cost and high stability catalysts can be regarded as candidates for application in alkaline fuel cells and metal–air batteries.

Published in Electrochemistry Communications20 (2012) 171–174