Nano Mg/MnO_2-Graphene Storage Cell For Enhanced Performance

摘要

In this present study, a nano-MnO_2/graphene based cathode was prepared and its characteristics were studied for Mg/MnO_2 primary battery applications. A modified magnesium/manganese dioxide (Mg/MnO_2) with graphene primary cell was investigated using the prepared MnO_2-graphene nanoparticles and conventional MnO_2 system. The storage capacity and energy density of the nano-MnO_2-graphene based cathode materials increased respectively, from 2.6 to 7.5 mAh g~(-1) and 3.5 to 10 Wh kg~(-1). The discharge time of nano-MnO_2/graphene based cathode increased to approximately 5200 s than that of conventional micron-MnO_2-based cathode. Thus, this study opens up a new approach to use MnO_2/graphene nanoparticles as a cathode material for magnesium primary batteries in future.