Mesoporous vanadium pentoxide nanofibers with significantly enhanced Li-ion storage properties by electrospinning

Yu, Danmei; Chen, Changguo; Xie, Shuhong; Liu, Yanyi; Park, Kwangsuk; Zhou, Xiaoyuan; Zhang, Zuo‐Feng; Li, Jiangyu; Cao, Guangmin

doi:10.1039/c0ee00313a

Cited by 185 publications

(121 citation statements)

References 28 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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“…Moreover, with increasing the annealing temperature, the (00l) peak of the Mo-doped V 2 O 5 thin films is further shifted to the lower angles. The (001) preferred orientation reveals that the Mo-doped V 2 O 5 thin films have a layered structure, which is beneficial for ion injection and extraction [18,19]. Besides, the diffraction peaks located at 21.3°, 30.0°, 34.8°, 50.4°, 60.1°are attributed to polycrystalline ITO.…”

Section: Methodsmentioning

confidence: 96%

Effect of post-annealing on structural and electrochromic properties of Mo-doped V2O5 thin films

Wei

Zhang

Cao

et al. 2015

J Sol-Gel Sci Technol

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The effect of post-annealing on the structural and electrochromic properties of the Mo-doped V 2 O 5 thin films was investigated in this paper. With varying the annealing temperature, the interlayer distance is increased from 1.16 (as-deposited) to 1.38 nm (annealing at 250°C), and the enlarged interlayer spacing would facilitate ion movement in between the interlayers inside the electrochromic matrix. Therefore, both the optical modulation and color efficiency of the Mo-doped V 2 O 5 thin films are enhanced after appropriate post-annealing treatment. Our results demonstrate that Mo-doped V 2 O 5 material is one of the promising candidates to be used in multi-color electrochromic devices. Graphical Abstract The ability to modulate optical transmittance of the Mo-doped V 2 O 5 thin films is greatly enhanced by means of the larger interlayer distance after annealing.

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“…Electrospinning has also been employed recently in the synthesis of 1D V2O5 nanowires which display enhanced Li-ion performance [326,328,329,332]. For example, Mai et al [329], prepared ultra-long V2O5 nanowires with diameters between 100-200 nm and lengths of several millimetres, by electrospinning a solution of poly (vinyl alcohol) and NH4VO3 under an applied voltage of 20 kV.…”

Section: 14mentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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Access to the full text of the published version may require a subscription. Rights © Tsinghua University Press and Springer-Verlag Berlin ABSTRACTThe performance of the lithium-ion cell is heavily dependent on the ability of the host electrodes to accommodate and release Li + ions from the local structure. While the choice of electrode materials may define parameters such as cell potential and capacity, the process of intercalation may be physically limited by the rate of solid-state Li + diffusion. Increased diffusion rates in lithium-ion electrodes may be achieved through a reduction in the diffusion path, accomplished by a scaling of the respective electrode dimensions.In addition, some electrodes may undergo large volume changes associated with charging and discharging, the strain of which, may be better accommodated through nanostructuring. Failure of the host to accommodate such volume changes may lead to pulverisation of the local structure and a rapid loss of capacity. In this review article, we seek to highlight a number of significant gains in the development of nanostructured lithium-ion battery architectures (both anode and cathode), as drivers of potential next-generation electrochemical energy storage devices.

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Mesoporous vanadium pentoxide nanofibers with significantly enhanced Li-ion storage properties by electrospinning

Cited by 185 publications

References 28 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

Effect of post-annealing on structural and electrochromic properties of Mo-doped V2O5 thin films

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

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