Reconstruction of Conformal Nanoscale MnO on Graphene as a High‐Capacity and Long‐Life Anode Material for Lithium Ion Batteries

Abstract To tackle the issue of inferior cycle stability and rate capability for MnO anode materials in lithium ion batteries, a facile strategy is explored to prepare a hybrid material consisting of MnO nanocrystals grown on conductive graphene nanosheets. The prepared MnO/graphene hybrid anode exhibits a reversible capacity as high as 2014.1 mAh g −1 after 150 discharge/charge cycles at 200 mA g −1 , excellent rate capability (625.8 mAh g −1 at 3000 mA g −1 ), and superior cyclability (843.3 mAh g −1 even after 400 discharge/charge cycles at 2000 mA g −1 with only 0.01% capacity loss per cycle). The results suggest that the reconstruction of the MnO/graphene electrodes is intrinsic due to conversion…