ao7b00037_si_001.pdf (1.99 MB)
V2O5 Nanowire Composite Paper as a High-Performance Lithium-Ion Battery Cathode
journal contribution
posted on 2017-03-31, 00:00 authored by Yue Zhang, Yizhi Wang, Zhihong Xiong, Yongming Hu, Weixing Song, Qiu-an Huang, Xiaoxing Cheng, Long-Qing Chen, Chunwen Sun, Haoshuang GuUltralong, 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 μAh/cm2 at 0.09 mA/cm2, much higher
than that of the pure V2O5 nanowire paper electrode
(570 μAh/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.
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Keywords
1000 cyclespaper electrodereduction methodV 2 O 5 Nanowire Composite PaperrGO additioncycling performanceV 2 O 5High-Performance Lithium-Ion Battery Cathode Ultralonggraphene oxideV 2 O 5 nanowiresion transportmAvanadium pentoxidehydrothermal method885 μlithium ion batterieselectrochemical performanceareal capacity
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