Premium
Bi‐Metal (Zn, Mn) Metal–Organic Framework–Derived ZnMnO 3 Micro‐Sheets Wrapped Uniformly with Polypyrrole Conductive Network toward High‐Performance Li‐Ion Batteries
Author(s) -
Sun Xuan,
Zhang Yanru,
Zhang Jinyang,
Zaman Fakhr uz,
Hou Linrui,
Yuan Changzhou
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201901218
Subject(s) - polypyrrole , anode , materials science , oxide , battery (electricity) , chemical engineering , electrical conductor , metal , electrode , metal organic framework , polymerization , nanotechnology , polymer , composite material , metallurgy , chemistry , organic chemistry , power (physics) , physics , quantum mechanics , adsorption , engineering
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 ZnMnO 3 (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.