Robust iron nanoparticles with graphitic shells for high-performance Ni-Fe battery

A robust Fe anode consists of Fe nanoparticles with graphitic shells is obtained by pyrolysis of homogenous polymeric complexes containing iron salts, which exhibits an excellent high-rate performance and long-term cycling stability. A high-performance full Ni-Fe battery is demonstrated by using the as-prepared Fe anode. This work provides highly promising materials towards better Ni-Fe batteries.240