V2O5 quantum dots/graphene hybrid nanocomposite with stable cyclability for advanced lithium batteries

Han, Chunhua; Yan, Mengyu; Mai, Liqiang; Tian, Xiaocong; Xu, Lin; Xu, Xu; An, Qinyou; Zhao, Yunlong; Ma, Xinyu; Xie, Jian

doi:10.1016/j.nanoen.2013.03.012

Cited by 75 publications

(43 citation statements)

References 30 publications

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“…[29][30][31] For instance, Pan et al into 1D CNTs, [32][33][34][35] 2D graphenes, [36][37][38] etc. In this regard, Rui et al 39 hybridized reduced graphene oxide (rGO) with highly porous V 2 O 5 spheres (denoted as V 2 O 5 /rGO) using a simple solvothermal method, as shown in Fig.…”

Section: O 5 Nanostructures For Libsmentioning

confidence: 99%

Vanadium-based nanostructure materials for secondary lithium battery applications

et al. 2015

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Vanadium-based materials, such as V2O5, LiV3O8, VO2(B) and Li3V2(PO4)3 are compounds that share the characteristic of intercalation chemistry. Their layered or open frameworks allow facile ion movement through the interspaces, making them promising cathodes for LIB applications. To bypass bottlenecks occurring in the electrochemical performances of vanadium-based cathodes that derive from their intrinsic low electrical conductivity and ion diffusion coefficients, nano-engineering strategies have been implemented to "create" newly emerging properties that are unattainable at the bulk solid level. Integrating this concept into vanadiumbased cathodes represents a promising way to circumvent the aforementioned problems as nanostructuring offers potential improvements in electrochemical performances by providing shorter mass transport distances, higher electrode/electrolyte contact interfaces, and better accommodation of strain upon lithium uptake/ release. The significance of nanoscopic architectures has been exemplified in the literature, showing that the idea of developing vanadium-based nanostructures is an exciting prospect to be explored. In this review, we will be casting light on the recent advances in the synthesis of nanostructured vanadium-based cathodes. Furthermore, efficient strategies such as hybridization with foreign matrices and elemental doping are introduced as a possible way to boost their electrochemical performances (e.g., rate capability, cycling stability) to a higher level. Finally, some suggestions relating to the perspectives for the future developments of vanadium-based cathodes are made to provide insight into their commercialization. through the interspaces, making them promising cathodes for LIB applications. To bypass bottlenecks occurring in the electrochemical performances of vanadium-based cathodes that derive from their intrinsic low electrical conductivity and ion diffusion coefficients, nano-engineering strategies have been implemented to "create" newly emerging properties that are unattainable at the bulk solid level. Integrating this concept into vanadium-based cathodes represents a promising way to circumvent the aforementioned problems as nanostructuring offers potential improvements in electrochemical performances by providing shorter mass transport distances, higher electrode/electrolyte contact interfaces, and better accommodation of strain upon lithium uptake/release. The significance of nanoscopic architectures has been exemplified in the literature, showing that the idea of developing vanadium-based nanostructures is an exciting prospect to be explored. In this review, we will be casting light on the recent advances in the synthesis of nanostructured vanadium-based cathodes. Furthermore, efficient strategies such as hybridization with foreign matrices and elemental doping are introduced as a possible way to boost their electrochemical performances (e.g., rate capability, cycling stability) to a higher level. Finally, some suggestions relating to the perspective...

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Section: O 5 Nanostructures For Libsmentioning

confidence: 99%

Vanadium-based nanostructure materials for secondary lithium battery applications

et al. 2015

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“…[16][17][18][19][20][21] Han et al produced a V 2 O 5 quantum-dot/graphene hybrid nanocomposite by controlling the nucleation and growth processes and reported their applicability as cathode materials in LIBs. [16] Rui et al reported that reduced graphene oxide (RGO) supported highly porous polycrystalline V 2 O 5 spheres (V 2 O 5 /RGO). [17] In previous studies, composite materials of V 2 O 5 and graphene were mainly prepared by liquid-solution methods, including hydrothermal and solvothermal methods.…”

Section: Introductionmentioning

confidence: 99%

Uniform Decoration of Vanadium Oxide Nanocrystals on Reduced Graphene‐Oxide Balls by an Aerosol Process for Lithium‐Ion Battery Cathode Material

Choi

Kang

2014

Chemistry A European J

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VO2-decorated reduced graphene balls were prepared by a one-pot spray-pyrolysis process from a colloidal spray solution of well-dispersed graphene oxide and ammonium vanadate. The graphene-VO2 composite powders prepared directly by spray pyrolysis had poor electrochemical properties. Therefore, the graphene-VO2 composite powders were transformed into a reduced graphene ball (RGB)-V2O5 (RGB) composite by post-treatment at 300 °C in an air atmosphere. The TEM and dot-mapping images showed a uniform distribution of V and C components, originating from V2O5 and graphene, consisting the composite. The graphene content of the RGB-V2O5 composite, measured by thermogravimetric analysis, was approximately 5 wt %. The initial discharge and charge capacities of RGB-V2O5 composite were 282 and 280 mA h g(-1), respectively, and the corresponding Coulombic efficiency was approximately 100 %. On the other hand, the initial discharge and charge capacities of macroporous V2O5 powders were 205 and 221 mA h g(-1), respectively, and the corresponding Coulombic efficiency was approximately 93 %. The RGB-V2O5 composite showed a better rate performance than the macroporous V2O5 powders.

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“…Among them, graphene sheets with a two-dimensional (2D) structure have the advantage of being used as a substrate for embedded metal oxide due to mechanical strength, chemical stability, extraordinary electrical conductivity of 10 3 ~10 4 S m −1 , and ultrahigh theoretical surface area of 2630 m 2 g −110 . Studies of V 2 O 5 hybridized with 2D graphene sheets have been extensively accomplished by controlling the dimensionality of V 2 O 5 such as zero-dimensional (0D) nanoparticles14 or quantum dots15, one-dimensional (1D) ribbons16 or nanowires17, 2D nanosheets18, and three-dimensional (3D) aerogel19 or hydrogel20, which significantly improves the electrochemical performance. However, especially for the 0D V 2 O 5 /graphene nanocomposite architecture, we believe that considerable room for improvement in the electrode structure is left because nanomaterials are often self-aggregated or dissolved during cycling due to its high surface energy21.…”

mentioning

confidence: 99%

Porous V2O5/RGO/CNT hierarchical architecture as a cathode material: Emphasis on the contribution of surface lithium storage

Palanisamy

Jeong

et al. 2016

Sci Rep

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A three dimensional vanadium pentoxide/reduced graphene oxide/carbon nanotube (3D V2O5/RGO/CNT) composite is synthesized by microwave-assisted hydrothermal method. The combination of 2D RGO and 1D CNT establishes continuous 3D conductive network, and most notably, the 1D CNT is designed to form hierarchically porous structure by penetrating into V2O5 microsphere assembly constituted of numerous V2O5 nanoparticles. The highly porous V2O5 microsphere enhances electrolyte contact and shortens Li+ diffusion path as a consequence of its developed surface area and mesoporosity. The successive phase transformations of 3D V2O5/RGO/CNT from α-phase to ε-, δ-, γ-, and ω-phase and its structural reversibility upon Li+ intercalation/de-intercalation are investigated by in situ XRD analysis, and the electronic and local structure reversibility around vanadium atom in 3D V2O5/RGO/CNT is observed by in situ XANES analysis. The 3D V2O5/RGO/CNT achieves a high capacity of 220 mAh g−1 at 1 C after 80 cycles and an excellent rate capability of 100 mAh g−1 even at a considerably high rate of 20 C. The porous 3D V2O5/RGO/CNT structure not only provides facile Li+ diffusion into bulk but contributes to surface Li+ storage as well, which enables the design of 3D V2O5/RGO/CNT composite to become a promising cathode architecture for high performance LIBs.

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V2O5 quantum dots/graphene hybrid nanocomposite with stable cyclability for advanced lithium batteries

Cited by 75 publications

References 30 publications

Vanadium-based nanostructure materials for secondary lithium battery applications

Vanadium-based nanostructure materials for secondary lithium battery applications

Uniform Decoration of Vanadium Oxide Nanocrystals on Reduced Graphene‐Oxide Balls by an Aerosol Process for Lithium‐Ion Battery Cathode Material

Porous V2O5/RGO/CNT hierarchical architecture as a cathode material: Emphasis on the contribution of surface lithium storage

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