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所属单位：航空学院

发表刊物：CHEMISTRY-A EUROPEAN JOURNAL

关键字：electrochemistry hierarchical micro/nanostructures intercalation-type anode material lithium-ion batteries reaction mechanisms vanadium oxide

摘要：As intercalation-type anode materials for Li-ion batteries (LIBs), the commercially used graphite and Li4Ti5O12 exhibit good cycling and rate properties, but their theoretical specific capacities are too low to meet the ever-growing demands of high-energy applications such as electric vehicles. Therefore, the development of new intercalation-type anode materials with larger capacity is very desirable. Herein, we design and synthesize novel 3D hierarchical porous V2O3@C micro/nanostructures consisting of crumpled nanosheets, through self-reduction under annealing from the structurally similar VO2(B)@C precursors without the ad-dition of any other reducing reagent or gas. Excitingly, it is found for the first time through ex situ XRD technology that V2O3 is a new, promising intercalation-type anode material for LIBs with a high capacity. V2O3@C micro/nanostructures can deliver a large capacity of 732 mAh g(-1) without capacity loss at 100 mAg(-1) even after 136 cycles, as well as exhibiting excellent cycling and rate performances. The application of V2O3 for Na-ion batteries (NIBs) is elaborated for the first time, and excitingly, it is found that V2O3@C micro/nanostructures may be promising anode materials for NIBs.

ISSN号：0947-6539

是否译文：否

发表时间：2017-06-01

合写作者：Liu, Pengcheng,徐源,Bian, Kan,王经文,Tai, Guo'an,Gao, Yanfeng,Luo, Hongjie,Lu, Li,Liu, Jinsong

通讯作者：朱孔军