Self‐Supported Transition Metal‐Based Nanoarrays for Efficient Energy Storage

Abstract Rechargeable batteries and supercapacitors are currently considered as promising electrochemical energy storage (EES) systems to address the energy and environment issues. Self‐supported transition metal (Ni, Co, Mn, Mo, Cu, V)‐based materials are promising electrodes for EES devices, which offer highly efficient charge transfer kinetics. This review summarizes the latest development of transition metal‐based materials with self‐supported structures for EES systems. Special focus has been taken on the synthetic methods, the selection of substrates, architectures and chemical compositions of different self‐supported nanoarrays in energy storage systems. Finally, the challenges and opportunities of these materials for future development in this field are briefly discussed. We believe that the advancement in self‐supported electrode materials would pave the way towards next‐generation EES.