%0 Journal Article %T Efficient oxygen reduction on sandwich-like metal@N–C composites with ultrafine Fe nanoparticles embedded in N-doped carbon nanotubes grafted on graphene sheets %A Han, Xiao %A Zheng, Zhiping %A Chen, Jiayu %A Xue, Yakun %A Li, Huiqi %A Zheng, Jun %A Xie, Zhaoxiong %A Kuang, Qin %A Zheng, Lansun %J Nanoscale %V 11 %N 26 %P 12610-12618 %@ 2040-3364 %D 2019-07-04 %I The Royal Society of Chemistry %~ DeepDyve