A novel porous tubular Co3O4: Self-assembly and excellent electrochemical performance as anode for lithium-ion batteries

In this manuscript, the novel 1D porous tubular structure was self-assembled by Co3O4 nanoparticles through a low-cost, eco-friendly and turning waste into treasure method using waste napkin paper as template and organizer. As anode materials for lithium ion batteries (LIBs), the typical sample shows a high reversible specific capacity (1053 mAh g−1 after 100 cycles at a current density of 100 mA g−1), remarkable cycling performance and a good rate capability of 727 mAh g−1 after 100 cycles at a high specific current density of 500 mA g−1. Additionally, this work demonstrates an eco-friendly example for turning waste biomass into treasure and addresses the disposal issue of discard rubbish simultaneously. Furthermore, the as-prepared Co3O4 may be an outstanding candidate anode material for LIBs and our study provides a new way to prepare other porous functional materials.