Stereoassembled V <sub>2</sub> O <sub>5</sub> @FeOOH Hollow Architectures with Lithiation Volumetric Strain Self-Reconstruction for Lithium-Ion Storage
Yao Zhang, Kun Rui, Aoming Huang, Ying Ding, Kang Hu, Wenhui Shi, Xiehong Cao, Huijuan Lin, Jixin Zhu, Wei Huang
Abstract
Vanadium oxides have recently attracted widespread attention due to their unique advantages and have demonstrated promising chemical and physical properties for energy storage. This work develops a mild and efficient method to stereoassemble hollow V 2 O 5 @FeOOH heterostructured nanoflowers with thin nanosheets. These dual-phased architectures possess multiple lithiation voltage plateau and well-defined heterointerfaces facilitating efficient charge transfer, mass diffusion, and self-reconstruction with volumetric strain. As a proof of concept, the resulting V 2 O 5 @FeOOH hollow nanoflowers as an anode material for lithium-ion batteries (LIBs) realize high-specific capacities, long lifespans, and superior rate capabilities, e.g., maintaining a specific capacity as high as 985 mAh g −1 at 200 mA g −1 with good cyclability.