Lithium-ion Battery Performance Of Metal-Oxide One-Dimensional Nanostructure Arrays

Nanomaterials have been paid more and more attention due high reactivity and fast charge transfer, which has potential applications in lithium-ion battery (LIB) electrodes other field. In recent years, nanomaterials have already showed a very favorable electrochemical propertiy. Along with a detailed study, morphology and structure of the transition metal oxide nanomaterials for LIBs electrode materials and other devices have gradually become a focus for researchers. In this paper, we systematically investigate the preparation of gas sensor and LIB anode properties of one-dimensional (ID) transition metal oxide nanomaterials arrays. The contents are as follows:(1)1D Co3O4nanomaterials array structure has been used as LIB anode to improve the performance of LIB. By using hydrothermal method, Co3O4precursor were directly grown on copper foil. After being annealed,1D porous nanostructured needle-like Co3O4arrays were obtained on copper foils.1D Co3O4nano-arrays based LIB anode showed excellent Li insertion/extraction performance, including ultrafast charge/discharge, high capacity and good stability. For this outstanding performance of electrode anode material, we propose a novel mechanism for1D Co3O4nanoneedle array during the charging/discharging process.(2)1D blade-like CuO nano-arrays were used as LIB anode that has improved performance of LIB.1D blade-like CuO nano-array was obtained by etching copper foil and then annealling. This kind of CuO nano-array is synthesied via a facil wet-chemical route. LIB anode based on the CuO nano-arrays showed a very high reversible capacity and good cycle stability. Such a high performance is mainly contributed to the distinct1D nano-array structure.(3)1D SnO2/a-MoO3core-shell nanostructures were used as gas sensor and LIB anode that has improved performance of gas seneor and LIB1D SnO2/a-MoO3heterostructure nanobelts are synthesized via a simple wet-chemical route. SnO2nanoparticles are uniformly loaded on surface of α-MoO3nanobelts. This is the first time we use core-shell nanostructure between metal-oxide and metal oxide in gas sensor and LIB. And high performance of gas sensor (including high sensitivity and low work temperature) and LIB (including high capacity and high stability) are obtained. Such behaviors have been rational explained with energy band theory and electrochemical reaction mechanism.