▎ 摘 要
Owing to high specific capacity (394 mA h g(-1) based on a two-electron reaction), good ionic conductivity and suitable working potential (~ 0.8 V), Li3VO4 (LVO) has been recently considered as a promising intercalation anode material for lithium-ion batteries (LIBs). Such material, however, suffers from poor electronic conductivity, thus limiting its practical applications. Herein, we develop a facile self-template strategy for constructing 3D hierarchical LVO/C hybrids assembled from carbon-coated LVO and in-situ generated N doped graphene framework. Such hybrids not only offer an interconnected 3D conductive network, but also afford intimate contact between active components and conductive scaffolds, thus realizing a high -efficiency electron/ion transport system. When employed as anode for LIBs, the resulting product exhibits reversible capacities of 347.6 mA h g(-1) at 0.5 A g(-1) and 206.8 mA h g(-1) at 4 A g(-1), and a capacity retention of 75.3 % after 1000 cycles at 1 A g(-1). This work provides a facile and green strategy for building 3D multiscale hierarchical hybrids, which could be extended to prepare other nanocomposites for energy-related applications.