Iron oxide nanoconfined in carbon nanopores as high capacity anode for rechargeable alkaline batteries

We report on a simple method to produce nanostructured Fe-based composite anode powder, where FeOx nanoparticles are uniformly distributed within nanopores of activated carbon. Nanoconfinement and increased discharge cut-off voltage suppressed the Fe dissolution substantially and improved discharge capacity retention of Ni/Fe battery to 85% capacity after 200 cycles.327