Ultra-low-loading RuW nanoclusters coupled with W single atoms for efficient anion exchange membrane fuel cells

We present Ru–W nanoclusters integrated with W single atoms on a N-doped carbon substrate (RuW/W–NC) for AEMFCs, where RuW/W–NC with a Ru loading of 0.1 mg cm −2 achieves a high power density of 2.03 W cm −2 and can be run stably at 1 A cm −2 for 100 h.