Effect of ion doping on the electrochemical performances of LiFePO4–Li3V2(PO4)3composite cathode materials

Jin, Chao; Zhang, Xudong; He, Wen; Wang, Yan; Li, Haiming; Wang, Zhuo; Bi, Zhiying

doi:10.1039/c3ra47734g

Cited by 22 publications

(11 citation statements)

References 77 publications

(70 reference statements)

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“…[263][264][265][266] The choice of cathode material plays an essential role in the life cycle, cost, and energy density in lithium-ion batteries. 262,267,268 Chapter 5. Quantum-chemical approach to NMR chemical shifts in paramagnetic solids of their thermal stability, high energy density, high theoretical specific capacities, low cost, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Probing Interactions of N-Donor Molecules with Open Metal Sites within Paramagnetic Cr-MIL-101: A Solid-State NMR Spectroscopic and Density Functional Theory Study

et al. 2018

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Understanding host-guest interactions is one of the key requirements for adjusting properties in metal-organic frameworks (MOFs). In particular, systems with coordinatively unsaturated Lewis acidic metal sites feature highly selective adsorption processes. This is attributed to strong interactions with Lewis basic guest molecules. Here we show that a combination of C MAS NMR spectroscopy with state-of-the-art density functional theory (DFT) calculations allows one to unravel the interactions of water, 2-aminopyridine, 3-aminopyridine, and diethylamine with the open metal sites in Cr-MIL-101. TheC MAS NMR spectra, obtained with ultrafast magic-angle spinning, are well resolved, with resonances distributed over 1000 ppm. They present a clear signature for each guest at the open metal sites. Based on competition experiments this leads to the following binding preference: water < diethylamine ≈ 2-aminopyridine < 3-aminopyridine. Assignments were done by exploiting distance sum relations derived from spin-lattice relaxation data and C{H} REDOR spectral editing. The experimental data were used to validate NMR shifts computed for the Cr-MIL-101 derivatives, which contain CrO clusters with magnetically coupled metal centers. While both approaches provide an unequivocal assignment and the arrangement of the guests at the open metal sites, the NMR data offer additional information about the guest and framework dynamics. We expect that our strategy has the potential for probing the binding situation of adsorbate mixtures at the open metal sites of MOFs in general and thus accesses the microscopic interaction mechanisms for this important material class, which is essential for deriving structure-property relationships.

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Section: Introductionmentioning

confidence: 99%

Probing Interactions of N-Donor Molecules with Open Metal Sites within Paramagnetic Cr-MIL-101: A Solid-State NMR Spectroscopic and Density Functional Theory Study

et al. 2018

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“…Lithium Iron Phosphate (LiFePO 4 [70]. Among them, Jin et al group had concluded that coatings based on LFP-LVP composite materials had shown better electrochemical properties with an excellent capacity retention rate of 73.3 % and increased cycling stability [70]. It is because these composite materials have large number of defects which would greatly increase the electrochemical property of the battery.…”

Section: Coatings For Batteriesmentioning

confidence: 98%

“…Apart from anode, the cathode part is also considered to be significant for attaining batteries with high energy density, high rate capability, and long cycle life. Lithium Iron Phosphate (LiFePO 4 [70]. Among them, Jin et al group had concluded that coatings based on LFP-LVP composite materials had shown better electrochemical properties with an excellent capacity retention rate of 73.3 % and increased cycling stability [70].…”

Section: Coatings For Batteriesmentioning

confidence: 98%

Coatings for Energy Applications

Keshri

Sribalaji

2015

Thin Film Structures in Energy Applications

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This chapter aims at providing an understanding about the potential applications of various types of coatings in energy sector. As the energy demands are growing day by day, there is need of enhancing the efficiency of energy systems, which can be enhanced using the advanced coatings. This chapter summarizes about the application of thin films and thick coatings of conventional/nanomaterials in both renewable and non-renewable energy sectors. A comparison between the efficiencies of systems with and without coatings has also been addressed. The importance and challenges associated with adding nanomaterials like carbon nanotubes (CNT), graphene, and various nanostructures with conventional coating material have also been discussed. This chapter can lead to better fundamental understanding about the coatings, which ensures new designs, high efficiency, and large application of coatings in energy sector. IntroductionEnergy has been the part of our life, especially electricity plays a vital role in our modern society. With an ever-increasing population, energy demand also growing faster for the past few decades. To meet the increased demand, every country has started to explore different energy systems to produce and store electricity in an efficient and most importantly in the eco-friendly way [1]. Hence, by increasing energy production, emission of greenhouse gases like carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O) also rises to its peak. In order to decrease the emission of greenhouse gases, a worldwide initiation has also been in progress. Energy conservation steps have been introduced, either by reducing CO 2 emission from non-renewable sources like coal, natural gas, petroleum, and nuclear sources; or by avoiding such emissions using renewable energy sources as wind, water, sunlight, or biomass.

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“…Lithium iron phosphate (LiFePO 4 ) as a very promising active material attracts much attention for electrical vehicles because of its low toxicity, high safety, potentially low cost, excellent life cycle, high structural stability, and large theoretical capacity (170 mA h g À1 ), among others [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. However, the kinetic performance of LiFePO 4 suffers significantly from poor electronic conductivity and slow lithium-ion transport.…”

Section: Introductionmentioning

confidence: 99%

“…However, the kinetic performance of LiFePO 4 suffers significantly from poor electronic conductivity and slow lithium-ion transport. To overcome the disadvantages, the performance was improved by decreasing the particle size, performing a surface modification, doping with other elements, coating with conductive material, and so on [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Nevertheless, to be useful for electric vehicles or high power energy storage, the active material of a Li-ion battery should be coated with a foil type current collector that is much thinner, and its electrode area should be large enough to meet the high power performance with a sufficient capacity.…”

Section: Introductionmentioning

confidence: 99%

Calendering effect on the electrochemical performances of the thick Li-ion battery electrodes using a three dimensional Ni alloy foam current collector

Yang

Joo

2015

Electrochimica Acta

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Effect of ion doping on the electrochemical performances of LiFePO₄–Li₃V₂(PO₄)₃composite cathode materials

Abstract: This review highlights the effect of ion doping on the electrochemical performances of LiFePO4–Li3V2(PO4)3 composite cathode materials.

Cited by 22 publications

References 77 publications

Probing Interactions of N-Donor Molecules with Open Metal Sites within Paramagnetic Cr-MIL-101: A Solid-State NMR Spectroscopic and Density Functional Theory Study

Probing Interactions of N-Donor Molecules with Open Metal Sites within Paramagnetic Cr-MIL-101: A Solid-State NMR Spectroscopic and Density Functional Theory Study

Coatings for Energy Applications

Calendering effect on the electrochemical performances of the thick Li-ion battery electrodes using a three dimensional Ni alloy foam current collector

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