Hierarchically porous TiO2/rGO with exposed (001) facets for lithium storage capacity

In this work, the (001) faceted nanosheet-constructed hierarchically porous TiO2/rGO hybrid architecture shows unprecedented and highly stable lithium storage performance. The DFT calculations evidence that the (001) faceted TiO2 nanosheets enable enhanced reaction kinetics and the reduced graphene oxide (rGO) largely improves the charge transport. Moreover, the formed Li2Ti2O4 nanodots facilitate the reversed Li+ insertion-extraction during the cycling process.