Retraction to: Nature Catalysis https://doi.org/10.1038/s41929-018-0200-8, published online 17 December 2018.

We the authors are retracting this Article as we are unable to fully explain a pseudo-periodic noise pattern in the chronoamperometry plot of Fig. 4f. The raw data for this plot was lost and we are unable to reproduce the noise pattern under the same conditions originally reported. These issues reduce our full confidence in the performance of the catalyst reported in the study and we therefore wish to retract the Article.

All authors agree with this retraction.