An advanced sandwich-type architecture of MnCo₂O₄@N–C@MnO₂ as an efficient electrode material for a high-energy density hybrid asymmetric solid-state supercapacitor

Abstract

A thin layer of N–C sandwiched between an electroactive MnCo₂O₄ core and MnO₂ shell results in sophisticated, robust core@sandwich@shell as a highly efficient energy storage material.