context: At a volumetric current density of 268 mA cm−3, the volumetric capacity of ∼215 mA h cm−3 of LixMnO2/nanomesh is much larger than the capacity of many 3D core–shell cathodes at similar vol. current densities, such as MnO2-coated carbon nanotubes (∼53 mA h cm−3), LiCoO2-coated carbon fiber mats (∼70 mA h cm−3), LiCoO2-coated aluminium nanowires (∼140 mA h cm−3) or V2O5-coated CNT/PAN sheets (∼155 mA h cm−3). At a vol. current density of ∼270 mA cm−3, the volumetric capacity of the nanomesh cathodes is only significantly inferior to that of LiCoO2-coated carbon foam (∼370 mA h cm−3) and Li2MnSiO4 doubly-loaded on graphene inverse opals (∼520 mA h cm−3) – both electrodes having a very high volume fraction of the active materials of 57% and 90%, respectively. Furthermore, also at high current densities above 1000 mA cm−3, the nanomesh cathode retains superior volumetric capacity to most of the electrodes, being only inferior to the two aforementioned electrodes and the V2O5-coated graphene inverse opals with a highly regular structure and larger pores. At high currents densities, however, the comparison may be additionally affected by the varying thicknesses of the electrodes (Table S3†), since thinner electrodes (such as ours) typically show better high-rate performance.
answer: LixMnO2/nanomesh