The authors regret an error in the published Fig. 5. In the revised Fig. 5. (below) panel (d) have been replaced with the chronoamperometry curves from the same sample. Therefore, the main conclusion of Fig. 5, viz. The stability comparison of Pdx-Niy/PANI-SnO2, Pd/PANI-SnO2, and Pd/C (Comm.) catalysts, are unaffected. The authors would like to apologise for any inconvenience caused. [Formula presented]