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V2O5 Nanowire Composite Paper as a High-Performance Lithium-Ion Battery Cathode.

ABSTRACT: Ultralong, as long as ?1 mm, orthorhombic vanadium pentoxide (V2O5) nanowires were synthesized using a hydrothermal method. Free-standing and binder-free composite paper was prepared on a large scale by a two-step reduction method using free-standing V2O5 nanowires as the skeleton and reduced graphene oxide (rGO) nanosheets as the additive. Such a free-standing V2O5/rGO composite paper as a cathode for lithium ion batteries possesses both structural integrity and extraordinary electrochemical performance. The reversible specific areal capacity of the V2O5/rGO composite paper electrode is 885 ?Ah/cm2 at 0.09 mA/cm2, much higher than that of the pure V2O5 nanowire paper electrode (570 ?Ah/cm2). It also shows excellent cycling performance at high rates with 30.9% loss of its initial capacities after 1000 cycles at a current rate of 0.9 mA/cm2. The excellent performance was attributed to the improved electronic conductivity and Li+ ion transport from the rGO addition.

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6641031 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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V<sub>2</sub>O<sub>5</sub> Nanowire Composite Paper as a High-Performance Lithium-Ion Battery Cathode.

Zhang Yue Y   Wang Yizhi Y   Xiong Zhihong Z   Hu Yongming Y   Song Weixing W   Huang Qiu-An QA   Cheng Xiaoxing X   Chen Long-Qing LQ   Sun Chunwen C   Gu Haoshuang H  

ACS omega 20170306 3

Ultralong, as long as ∼1 mm, orthorhombic vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>) nanowires were synthesized using a hydrothermal method. Free-standing and binder-free composite paper was prepared on a large scale by a two-step reduction method using free-standing V<sub>2</sub>O<sub>5</sub> nanowires as the skeleton and reduced graphene oxide (rGO) nanosheets as the additive. Such a free-standing V<sub>2</sub>O<sub>5</sub>/rGO composite paper as a cathode for lithium ion batteries posses  ...[more]

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