Effects of Cr doping on the structural and electrochemical properties of V2O5

Zhan, Shiying; Chen, Gang; Liu, Daliang; Li, Ang; Wang, Chunzhong

doi:10.1016/j.jallcom.2009.01.023

Cited by 35 publications

(12 citation statements)

References 28 publications

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“…Besides these, some other studies showed that the electrochemical performance of V 2 O 5 could be improved by introducing some guest cations (M) such as Ag + , Cu 2+ , Fe 3+ and Cr 3+ into the material matrix [9][10][11][12][13]. The improvement in electrochemical performance of the cation doped V 2 O 5 has been attributed to their stabled crystal structure.…”

Section: Introductionmentioning

confidence: 98%

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Zhan

Wei

Bie

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 98%

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Zhan

Wei

Bie

et al. 2010

Journal of Alloys and Compounds

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“…Similar results have also been observed for the Al doped V 2 O 5 (ref. 57) and Cr doped V 2 O 5 34,55,58. Due to the less number of phase transition during the redox process, this Y-doped V 2 O 5 is expected to show better cycling performance than the pure V 2 O 5 .…”

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confidence: 99%

Y-doped V₂O₅ with enhanced lithium storage performance

et al. 2017

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“…In achieving a high power density, rapid ionic and electronic diffusion in electrode materials are necessary 3. Recently, many strategies, such as reducing the electrode materials to the nanoscale size, coating or mixing with more conductive materials, and doping of electrode materials with foreign atoms have been developed to improve the power density 3, 4, 6, 10. In particular, an ultrafast discharge rate as high as 400 C was achieved by Ceder et al6 However, none of these methods provide a single silver bullet.…”

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confidence: 99%

V₂O₅ Loaded on SnO₂ Nanowires for High‐Rate Li Ion Batteries

Yan¹,

Sumboja²,

Khoo³

et al. 2010

Advanced Materials

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The growing demand for high-power applications such as electric vehicles, hybrid electric vehicles, and other power-supply devices has triggered signifi cant research efforts on high-energy and power-density energy-storage devices. [1][2][3][4][5] Among the energystorage devices, electrochemical supercapacitors can deliver high power, but they suffer from low energy density. [ 5 ] Lithium batteries (LiBs) with their high energy density have attracted considerable attention. [6][7][8][9] However, for use as a versatile power source, it is still a challenge to achieve a high-power density compared with supercapacitors. [ 2-4 , 6 ] In achieving a high power density, rapid ionic and electronic diffusion in electrode materials are necessary. [ 3 ] Recently, many strategies, such as reducing the electrode materials to the nanoscale size, coating or mixing with more conductive materials, and doping of electrode materials with foreign atoms have been developed to improve the power density. [ 3 , 4 , 6 , 10 ] In particular, an ultrafast discharge rate as high as 400 C was achieved by Ceder et al. [ 6 ] However, none of these methods provide a single silver bullet. The strategies mentioned above suffer from disadvantages such as poor cycling stability and the requirement of a high percentage of carbon black. [ 3 , 6 , 11 , 12 ] Therefore, there is currently an impending need to improve the performance of lithium batteries. V 2 O 5 is a very-promising electrode material as it offers the attractive advantages of low-cost, abundant sources and better safety. [13][14][15][16] Furthermore, Cui et al. have reported very fast (360 C) Li insertion into V 2 O 5 nanoribbons. [ 1 ] Dunn et al. and many other researchers have tried to improve the performance of V 2 O 5 by combining it with more-conductive materials like carbon, nickel and other materials to achieve better rate capability. [17][18][19][20][21] However, the performance is still unsatisfactory. For instance, V 2 O 5 /carbon composites have been reported to suffer from low cycling stability. [ 19 ] This also happens to Ni-V 2 O 5 ⋅ n H 2 O nanocable arrays. [ 21 ] Inspired by previous studies, we propose and realize a simple strategy of coating V 2 O 5 on SnO 2 nanowires to achieve high-power-density and high-energydensity LiBs. [ 19 , 21 , 22 ] In coin-cell measurements, with electrodes composed of these SnO 2 /V 2 O 5 core/shell nanowires (SVNs), a high specifi c capacity, an excellent rate capability and cycling stability are achieved. Furthermore, the temperature dependent performance is discussed systematically. Figure 1 shows the synthesis strategy for the SVNs. Firstly, the SnO 2 nanowires were synthesized using chemical vapor deposition. Then, V 2 O 5 was coated on the SnO 2 nanowires by pyrolysis of vanadyl-acetylacetonate (VO(acac) 2 ). Figure 1 schematically illustrates the idea and motivation, namely, the utility of the better conductivity of SnO 2 nanowires and the short diffusion distance of the thin V 2 O 5 layer. [ 1 , 22 ] Figure 2 a and b show fi ...

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Effects of Cr doping on the structural and electrochemical properties of V2O5

Cited by 35 publications

References 28 publications

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Y-doped V₂O₅ with enhanced lithium storage performance

V₂O₅ Loaded on SnO₂ Nanowires for High‐Rate Li Ion Batteries

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Effects of Cr doping on the structural and electrochemical properties of V2O5

Cited by 35 publications

References 28 publications

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

Y-doped V2O5 with enhanced lithium storage performance

V2O5 Loaded on SnO2 Nanowires for High‐Rate Li Ion Batteries

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Product

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Y-doped V₂O₅ with enhanced lithium storage performance

V₂O₅ Loaded on SnO₂ Nanowires for High‐Rate Li Ion Batteries