Bi‐Metal (Zn, Mn) Metal–Organic Framework–Derived ZnMnO3 Micro‐Sheets Wrapped Uniformly with Polypyrrole Conductive Network toward High‐Performance Li‐Ion Batteries

Recently, porous mixed metal oxides have drawn interest as advanced anodes toward Li‐ion batteries (LIBs). However, there are existing challenges in achieving high‐rate capacities/cycle stabilities in practical applications. Herein, bottom‐up solvothermal fabrication of bi‐metal (Zn, Mn) metal–organic framework (MOF)‐derived ZnMnO3 (ZMO) micro‐sheets (MSs) is first devised, which are further wrapped uniformly with flexible polypyrrole (PPY) via efficient gaseous polymerization. In the hybrid (denoted as PPY@ZMO), the conductive PPY, as a continuous electronic network, is well dispersed throughout the porous ZMO MSs, which enhances the structural stability and charge transfer of the hybrid anode. Thanks to remarkable compositional/structural advantages and intrinsic pseudocapacitve contribution, the resultant PPY@ZMO anode is endowed with a high‐rate reversible capacity of 752.0 mAh g−1 at 2000 mA g−1, and desirable capacity retention with cycling (1037.6 mAh g−1 after 220 cycles at 500 mA g−1). In addition, the PPY@ZMO‐based full battery, along with remarkable cycling properties, exhibits an energy density of ≈206.2 Wh kg−1 in terms of the whole device, convincingly highlighting its promising application in advanced LIBs. Furthermore, the synthetic methodology here is highly generalized to other binary metal oxide/conductive polymer composites for energy‐related applications. Bi‐metal (Zn, Mn) metal–organic framework–derived ZnMnO3 micro‐sheets wrapped with conductive polypyrrole are fabricated, and exhibit enhanced high‐rate reversible capacities and cycling behaviors as competitive anodes for Li‐ion batteries.