【摘 要】
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In this paper,a very simple solution method is employed to coat amorphous MnO2 onto crystalline V2O5 nanoparticles grown on stainless steel substrate,which utilizes the better electrochemical performa
【机 构】
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School of Materials Science and Engineering,Shannxi Normal University,Shannxi,Xi,an,710062
论文部分内容阅读
In this paper,a very simple solution method is employed to coat amorphous MnO2 onto crystalline V2O5 nanoparticles grown on stainless steel substrate,which utilizes the better electrochemical performance of V2O5 nanoparticles as the supporting backbone to deposit MnO2 for cathode material of Li-ion batteries.In final result,this V2O5/MnO2 core/shell nanoparticles composite compared with pure V2O5 nanoparticless,deliver a high initial capacity of 254mAh/g,cycling performance with the decrease of capacity fading during 50 cycles from 0.199 to 1.48% over V2O5 nanoparticles at the current density of 50mA/g,and it decreased the phase change,which were presented by the CV and discharge curves.Amorphous MnO2 coated on V2O5 nanoparticles play a part of buffer layer when Li+ intercalation/de-intercalation,leading to enhanced performance of the composite with high capacity,long-lived and little phase change.
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