Porous monodisperse V2O5 microspheres as cathode materials for lithium-ion batteries

Wang, Haihui; Lu, Zhenda; Da, Wang; Li, Chunguang; Chen, Chunhua; Yin, Yadong

doi:10.1039/c0jm04398b

Cited by 191 publications

(133 citation statements)

References 31 publications

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“…From the data, it is clear that the introduction of a small amount (that is, 2%) of graphene has a profound effect on the electrochemical performance of V 2 O 5 , and the V 2 O 5 -G shows the best electrochemical performance of any reported V 2 O 5 hybrids in the coin cell configuration, as summarized in Supplementary Table 2 (refs 5,7,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. However, all performance changes are rooted in the material structure.…”

Section: Resultsmentioning

confidence: 96%

Graphene-modified nanostructured vanadium pentoxide hybrids with extraordinary electrochemical performance for Li-ion batteries

et al. 2015

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The long-standing issues of low intrinsic electronic conductivity, slow lithium-ion diffusion and irreversible phase transitions on deep discharge prevent the high specific capacity/energy (443 mAh g À 1 and 1,550 Wh kg À 1 ) vanadium pentoxide from being used as the cathode material in practical battery applications. Here we develop a method to incorporate graphene sheets into vanadium pentoxide nanoribbons via the sol-gel process. The resulting graphene-modified nanostructured vanadium pentoxide hybrids contain only 2 wt. % graphene, yet exhibits extraordinary electrochemical performance: a specific capacity of 438 mAh g À 1 , approaching the theoretical value (443 mAh g À 1 ), a long cyclability and significantly enhanced rate capability. Such performance is the result of the combined effects of the graphene on structural stability, electronic conduction, vanadium redox reaction and lithium-ion diffusion supported by various experimental studies. This method provides a new avenue to create nanostructured metal oxide/graphene materials for advanced battery applications.

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Section: Resultsmentioning

confidence: 96%

Graphene-modified nanostructured vanadium pentoxide hybrids with extraordinary electrochemical performance for Li-ion batteries

et al. 2015

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“…1,4,[7][8][9] It is no surprise that nanostructured materials are attracting significant attention because of their novel properties and their potential applications in a wide range of devices such as biological and gas sensors, 10-18 field effect transistors 19,20 and as electrode materials for next generation high energy density batteries. 21-23 Nanostructured cathode electrodes offer improved energy storage capacity and charge-discharge kinetics, as well as better cyclic stabilities.…”

mentioning

confidence: 99%

“…7 However it is vital that factors such as power and energy density, coulometric efficiency and rate performance are improved upon in order to meet demands for improved performance in advanced Liion batteries (∼400 Wh/kg). 1,4,[7][8][9] It is no surprise that nanostructured materials are attracting significant attention because of their novel properties and their potential applications in a wide range of devices such as biological and gas sensors, [10][11][12][13][14][15][16][17][18] field effect transistors 19,20 and as electrode materials for next generation high energy density batteries. [21][22][23] Nanostructured cathode electrodes offer improved energy storage capacity and charge-discharge kinetics, as well as better cyclic stabilities.…”

mentioning

confidence: 99%

Polycrystalline Vanadium Oxide Nanorods: Growth, Structure and Improved Electrochemical Response as a Li-Ion Battery Cathode Material

McNulty

Buckley

O’Dwyer

2014

J. Electrochem. Soc.

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Thermally removing amine molecules that serve as chemical templates for vanadium oxide nanotubes is demonstrated to significantly improve the performance when tested as a cathode material in Li-ion battery cells. Capacity fading issues associated with blocked intercalation sites on the (010) faces of layered vanadium oxide that form the nanotubes are prevented. Thermal treatment of the nanotubes up to 600 • C is shown to cause a specific conversion from nanotubes to polycrystalline nanorods and removal of the organic template. The conversion process was monitored by thermogravimetric analysis, X-ray diffraction, transmission electron microscopy and infra-red spectroscopy. In a potential window of 4.0-1.2 V drawing 30 μA (C/30), the nanorods show improved specific capacities of ∼280 mAh g −1 with a modest 6% capacity fade compared to ∼8 mAh g −1 with 62% capacity fade for the VONTs. The improvements in specific capacity and cycling performance are due to the successful removal of amine molecules and conversion to nanorods containing nanoscale crystals. The cathode material also demonstrated enhanced energy densities (∼700 W h kg −1 ) compared to composites of the same overall weight, without conductive carbon additives or polymeric binders. In recent years there has been a significant increase in the desire and need to improve the performance and cycle life of commercial rechargeable lithium ion batteries.1-6 The advent of smart phones and tablet devices has highlighted the limitations of current generation lithium ion batteries. Rechargeable lithium ion batteries still hold great promise for use in powering electric and hybrid electric vehicles and continue to be crucial in medical and handheld portable devices. 7However it is vital that factors such as power and energy density, coulometric efficiency and rate performance are improved upon in order to meet demands for improved performance in advanced Liion batteries (∼400 Wh/kg). 1,4,[7][8][9] It is no surprise that nanostructured materials are attracting significant attention because of their novel properties and their potential applications in a wide range of devices such as biological and gas sensors, 10-18 field effect transistors 19,20 and as electrode materials for next generation high energy density batteries. 21-23 Nanostructured cathode electrodes offer improved energy storage capacity and charge-discharge kinetics, as well as better cyclic stabilities.24 This is, in part, due to the increased surface area in direct contact with the electrolyte, and better electronic and ionic conductivity, and shorter distances for cation diffusion as compared with bulk materials. 25 Nanostructured electrodes are also able to better accommodate volume changes associated with cyclic intercalation and deintercalation of lithium ions into and from the host lattice. This reduces pulverization issues associated with bulk materials and consequently improves cycle life. 62 Nanostructures such as vanadium oxide nanotubes (VONTs) and nanorods are particularly attractive in prin...

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“…[63] The calcination might affect the structures of V 2 O 5 . [64] As shown in Figure 4a, the VOPs were collapsed at 300 °C in air, because the intercalated molecules in the VOPs were directly removed. In contrast, the structure of VOPs was maintained by reducing in hydrogen to obtain V 2 O 3 and then calcined for the conversion to V 2 O 5 .…”

Section: Two-dimensional Vo 2 (M) Nanostructuresmentioning

confidence: 99%

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

Liu

Tang

et al. 2017

Advanced Energy Materials

227

127

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Vanadium oxides are known for their multioxidation states and diverse crystalline structures. Owing to their excellent interactions with molecules or ions, outstanding catalytic activities, and/or strong electron–electron correlations, nanostructured vanadium oxides have been extensively studied for energy conversion in the recent years. Here is a review of the recent advances in the development of nanostructured vanadium oxides and their applications. The synthesis strategies and structural properties of various vanadium oxide nanostructures, including vanadium dioxide (VO2), vanadium pentoxide (V2O5), and others, are summarized. The applications of vanadium oxides in energy conversion are discussed, focusing on three important types of energy sources: chemical energy (LIBs, pseudocapacitors and fuel cells), solar energy (photovoltaics and photocatalytic hydrogen evolutions), and heat (thermoelectric generation). Finally, conclusion with our remarks on the prospects of nanostructured vanadium oxides in energy conversion are provided.

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Porous monodisperse V2O5 microspheres as cathode materials for lithium-ion batteries

Cited by 191 publications

References 31 publications

Graphene-modified nanostructured vanadium pentoxide hybrids with extraordinary electrochemical performance for Li-ion batteries

Graphene-modified nanostructured vanadium pentoxide hybrids with extraordinary electrochemical performance for Li-ion batteries

Polycrystalline Vanadium Oxide Nanorods: Growth, Structure and Improved Electrochemical Response as a Li-Ion Battery Cathode Material

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

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