Island-like mesoporous amorphous Fe2O3 layer: surface disorder engineering for enhanced lithium-storage performance

摘要: Abstract Molybdenum trioxide (MoO3) nanobelt is very attractive anode electrode for LIBs because of their high theoretical capacity. To enhance the capacity and cyclic performance MoO3-based materials lithium ion battery (LIB), here, as a proof concept, we report in this work novel surface disordered engineering strategy fabrication island-like mesoporous amorphous Fe2O3 layer on MoO3 nanobelts (a-Fe2O3@MoO3). The obtained by direct hydrolysis FeCl3.6H2O assisted low-temperature heat treatment. Here, plays multifunctional role formation layer, disordering increasing specific area porosity nanobelts. as-formed demonstrated to significantly improve kinetics behavior lithium-ion diffusion electronic transport due its isotropic feature during cycling. As result, designed exhibits dramatically enhanced electrochemical properties compared with individual physical mixture powdes nanobelts: initial discharge 1523 mAh g⿿1 at 50 mA g⿿1, remarkable rate capability (386 mAh g⿿1 500 mA g⿿1) outstanding cycling performance. Our results reveal new possibilities designing oxides electrodes disorder achieving