Preparation of Waxberry-Like Carbon-Coated Fe3O4 Composites and Exploration on Performance of Lithium-ion Battery Anode
Fe3O4 is considered as potential anode material for lithium-ion batteries with excellent lithium storage performance,but there are still issues of poor conductivity and volume expansion during charging and discharging.In this paper,L-arginine,p-phenylenediamine,and iron(Ⅲ)nitrate nonahydrate were used as raw materials to synthesize iron-doped L-arginine polymer(W-Fe3O4@NC precursor)through solvent thermal reaction.Subsequently,the waxberry-like carbon-coated Fe3O4 composite(W-Fe3O4@NC)was prepared by carbonization of the W-Fe3O4@NC precursor.The morphology,surface chemical structure,porosity,and electrochemical performance as lithium-ion battery anode of W-Fe3O4@NC were characterized.Benefit from the unique waxberry-like shape,beneficial nitrogen doped,highly dispersed Fe3O4 nanoparticles,and uniform carbon coating,the specific capacity of W-Fe3O4@NC reaches to 815.1 mAh/g after 800 cycles at a current density of 1 A/g and still remains 232 mAh/g at a current density of 5 A/g,which surpass those of NC and commercial Fe3O4 nanoparticles,demonstrating excellent cycling stability and rate performance.
L-arginine polymerFe3O4waxberry-likelithium-ion batteriesanode material
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NSTL
万方数据
维普
