Enhanced electrochemical performances of multi-walled carbon nanotubes modified Li3V2(PO4)3/C cathode material for lithium-ion batteries

Qiao, Y.Q.; Tu, Jian; Mai, Y.J.; Cheng, Liang; Wang, X.L.; Gu, C.D.

doi:10.1016/j.jallcom.2011.04.048

Cited by 69 publications

(31 citation statements)

References 34 publications

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“…A considerable number of articles are devoted to issues of ion transport in Li 3 V 2 (PO 4 ) 3 electrode [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], which engage for this purpose impedance spectroscopy method. However, the analysis of impedance data in these studies is quite superficial.…”

Section: Introductionmentioning

confidence: 99%

“…Some authors [17,21,24,25] use this circuit for analysis of impedance spectra in its Bclassicalf orm, which is questionable, since such a simple circuit is capable to satisfactorily describe spectra of similar simple shape. Another part of the authors, understanding this discrepancy, tried to modify such circuit by incorporation into it of additional R||C-connection [7,13] or replacing the capacitance by the CPE element [8,10,18], or applying both of these approaches [19,22]. It is worth to note that in several studies [9,12], authors refuted the said circuit and suggested to use significantly different, obviously more suitable circuit.…”

Section: Introductionmentioning

confidence: 99%

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Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Ivanishchev

Чуриков

Ivanishcheva

et al. 2015

Ionics

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In order to establish the mechanism and to determine the parameters of lithium transport in electrodes based on lithium-vanadium phosphate (Li 3 V 2 (PO 4 ) 3 ), the kinetic model was designed and experimentally tested for joint analysis of electrochemical impedance (EIS), cyclic voltammetry ( C V ) , p u l s e c h r o n o a m p e r o m e t r y ( P I T T ) , a n d chronopotentiometry (GITT) data. It comprises the stages of sequential lithium-ion transfer in the surface layer and the bulk of electrode material's particles, including accumulation of lithium in the bulk. Transfer processes at both sites are of diffusion nature and differ significantly, both by temporal (characteristic time, τ) and kinetic (diffusion coefficient, D) constants. PITT data analysis provided the following D values for the predominantly lithiated and delithiated forms of the intercalation material: 10 −9 and 3 × 10 −10 cm 2 s −1 , respectively, for transfer in the bulk and 10 −12 cm 2 s −1 for transfer in the thin surface layer of material's particles. D values extracted from GITT data are in consistency with those obtained from PITT: 3.5-5.8 × 10 −10 and 0.9-5 × 10 −10 cm 2 s −1 (for the current and currentless mode, respectively). The D values obtained from EIS data were 5.5 × 10 −10 cm 2 s −1 for lithiated (at a potential of 3.5 V) and 2.3 × 10 −9 cm 2 s −1 for delithiated (at a potential 4.1 V) forms. CV evaluation gave close results: 3 × 10 −11 cm 2 s −1 for anodic and 3.4 × 10 −11 cm 2 s −1 for cathodic processes, respectively. The use of complex experimental measurement procedure for combined application of the EIS, PITT, and GITT methods allowed to obtain thermodynamic E,c dependence of Li 3 V 2 (PO 4 ) 3 electrode, which is not affected by polarization and heterogeneity of lithium concentration in the intercalate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Ivanishchev

Чуриков

Ivanishcheva

et al. 2015

Ionics

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“…It is commonly desired and accepted that carbon content should be limited to low or moderate content. In addition, although significant improvements in electrochemical properties can be achieved by surface modification with graphene or carbon nanotube [15,18], the high cost of graphene or carbon nanotube greatly limits the practical application in LVP.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Cai

Yang

Guo

et al. 2015

Electrochimica Acta

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“…[18][19][20][21][22] Various organic compounds such as glucose, 18 citric acid, 19 starch, 20 polyethylene glycol, 21 and 1,4-dihydroxy-2-butyne 22 are considered as carbon sources for multifunction "nanocompositing" agents. Carbon nanotubes, 23 graphenes, 24,25 and reduced graphene oxides 26 are also examined for more effective carbon matrices. Downsizing the particles size (5-100 nm) is one of the most direct approaches, as shortening the path of the Li + diffusion in LVP nanoparticles definitely enhances the power performance up to a 60C rate.…”

mentioning

confidence: 99%

Ultrafast Cathode Characteristics of Nanocrystalline-Li₃V₂(PO₄)₃/Carbon Nanofiber Composites

Naoi

Kisu

Iwama

et al. 2015

J. Electrochem. Soc.

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Anisotropically grown Li 3 V 2 (PO 4 ) 3 nanocrystals, which are highly dispersed and directly impregnated on the surface of a carbon nanofiber (CNF), were successfully synthesized via a two-step synthesis process: i) precipitation of nanoplated V 2 O 3 precursors (20-200 nm); ii) transformation of the V 2 O 3 precursor into Li 3 V 2 (PO 4 ) 3 nanoplates without size change. The direct attachment of the Li 3 V 2 (PO 4 ) 3 nanocrystals to the carbon surface improves the electronic conductivity and Li + diffusivity of the entire Li 3 V 2 (PO 4 ) 3 /CNF composite, simultaneously producing a mesoporous network (pore size of approximately 10 nm) that acts as an electrolyte reservoir owing to the pillar effect of the impregnated Li 3 V 2 (PO 4 ) 3 crystals. This ideal Li 3 V 2 (PO 4 ) 3 /CNF nanostructure enabled a 480C rate (7.5 seconds) discharge with 83 mA h g −1 , and 69% of capacity retention at the slowest discharge rate (1C). Such an ultrafast charge-discharge performance opens the possibility of using Li 3 V 2 (PO 4 ) 3 as a cathode material for ultrafast lithium ion batteries with a stable cycle performance over 10,000 cycles at a 10C rate, maintaining 85% of the initial capacity. In the current society, the storage of electrical energy at high charge and discharge rate is an important technological issue as it enables hybrid and plug-in hybrid electric vehicles and provides a back-up to wind and solar energies.1,2 Rechargeable lithium-ion batteries (LIBs) are considered the most advanced energy storage systems; they possess high energy but limited power compared to high-power devices such as supercapacitors.1 To further improve the performance of the LIBs, several electrode materials have been proposed and investigated so far.2-11 Commercial cells utilize the layer-structured LiCoO 2 as the positive electrode, 3 but the high cost and toxicity of cobalt prohibit its use on a large scale. Spinel-type LiMn 2 O 4 is one of the alternative materials to cobalt for high-rate use. 4 Several reports on such materials for high-rate use have been published; however, the reported discharge performance are limited within 50-150C. Owing to their easy release of oxygen, LiCoO 2 and LiMn 2 O 4 also have safety issues at overcharged states or high temperatures.3,4 Thus, to achieve a long-term and safe use of the LIBs, cathode materials other than those including layer-structured or spinel-type materials have received significant attention. Researchers have identified polyanion-type cathode materials-such as phosphate cathode materials like LiFePO 4 (LFP) 5 and Li 3 V 2 (PO 4 ) 3 (LVP)-as attractive active materials because of their high thermal stability, high cyclability, and superior safety properties provided by the stable (PO 4 ) 3− unit. 6 The presence of a phosphate with a strong P-O covalency stabilizes the antibonding M-O (M = V or Fe) energy level through an M-O-P inductive effect and generates a conveniently high redox potential for M 3+ /M 2+ . 7 In particular, monoclinic LVP has attracted much attention because o...

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Enhanced electrochemical performances of multi-walled carbon nanotubes modified Li3V2(PO4)3/C cathode material for lithium-ion batteries

Cited by 69 publications

References 34 publications

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Ultrafast Cathode Characteristics of Nanocrystalline-Li₃V₂(PO₄)₃/Carbon Nanofiber Composites

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Enhanced electrochemical performances of multi-walled carbon nanotubes modified Li3V2(PO4)3/C cathode material for lithium-ion batteries

Cited by 69 publications

References 34 publications

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Synthesis and low temperature electrochemical properties of CeO2 and C co-modified Li3V2(PO4)3 cathode materials for lithium-ion batteries

Ultrafast Cathode Characteristics of Nanocrystalline-Li3V2(PO4)3/Carbon Nanofiber Composites

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Ultrafast Cathode Characteristics of Nanocrystalline-Li₃V₂(PO₄)₃/Carbon Nanofiber Composites