Composite containing nanosized titanium oxide and oxyfluoride and carbon synthesized in plasma of pulse high-voltage discharge

Kuryavyi, V. G.; Ustinov, A. Yu.; Opra, Denis P.; Zverev, G.A.; Kaidalova, T. A.

doi:10.1016/j.matlet.2014.09.007

Cited by 14 publications

(9 citation statements)

References 9 publications

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“…Some attractive transition metal sulfides, can provide high potential capacity by the conversion reaction or alloying process [3][4][5]. However, large volume changes during the lithiation and delithiation processes can cause rapid capacity fading and poor cycle life, which are serious drawbacks that hinder commercialization [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Biomass-Derived Graphitic Carbon Encapsulated Fe/Fe3C Composite as an Anode Material for High-Performance Lithium Ion Batteries

Liu

Haridas

et al. 2020

Energies

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Lithium ion (Li-ion) batteries have been widely applied to portable electronic devices and hybrid vehicles. In order to further enhance performance, the search for advanced anode materials to meet the growing demand for high-performance Li-ion batteries is significant. Fe3C as an anode material can contribute more capacity than its theoretical one due to the pseudocapacity on the interface. However, the traditional synthetic methods need harsh conditions, such as high temperature and hazardous and expensive chemical precursors. In this study, a graphitic carbon encapsulated Fe/Fe3C (denoted as Fe/Fe3C@GC) composite was synthesized as an anode active material for high-performance lithium ion batteries by a simple and cost-effective approach through co-pyrolysis of biomass and iron precursor. The graphitic carbon shell formed by the carbonization of sawdust can improve the electrical conductivity and accommodate volume expansion during discharging. The porous microstructure of the shell can also provide increased active sites for the redox reactions. The in-situ-formed Fe/Fe3C nanoparticles show pseudocapacitive behavior that increases the capacity. The composite exhibits a high reversible capacity and excellent rate performance. The composite delivered a high initial discharge capacity of 1027 mAh g−1 at 45 mA g−1 and maintained a reversible capacity of 302 mAh g−1 at 200 mA g−1 after 200 cycles. Even at the high current density of 5000 mA g−1, the Fe/Fe3C@GC cell also shows a stable cycling performance. Therefore, Fe/Fe3C@GC composite is considered as one of the potential anode materials for lithium ion batteries.

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Section: Introductionmentioning

confidence: 99%

Biomass-Derived Graphitic Carbon Encapsulated Fe/Fe3C Composite as an Anode Material for High-Performance Lithium Ion Batteries

Liu

Haridas

et al. 2020

Energies

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“…Note, that the other popular cathodes, e.g., LiMn 2 O 4 , LiNiO 2 , and LiFePO 4 are more cost-effective and environmental friendly in comparison with LiCoO 2 . However, the low specific capacity is also typical of these cathode materials [4][5][6]. In this way, the synthesis of high energy, safety, and low cost cathode materials is a fundamental problem of LIB field.…”

Section: Introductionmentioning

confidence: 99%

“…1 M solution of LiBF 4 salt in the miturex of propylene carbonate and dimethoxyethane at a volume ratio of 3:1 was used as an electrolyte. The design of electrochemical halfcell is described in detail in [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Fluorine substituted molybdenum oxide as cathode material for Li-ion battery

et al. 2015

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“…The use of TiO 2 removes the problem of LIB safety; at the same time, it reduces the operational voltage and capacity of the power source [12][13][14]. A major disadvantage of TiO 2 is the high irre versible capacity of the first cycle caused by both the low conductivity (10 -7 -10 -12 S/cm) and slow solid state diffusion of lithium ions (10 -9 -10 -15 cm 2 /s) [15][16][17].…”

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confidence: 99%

Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

Гнеденков

Opra

Железнов

et al. 2015

Russ. J. Inorg. Chem.

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Nanostructured TiO 2 and TiO 2 -ZrO 2 (4 wt % ZrO 2 ) in the anatase crystal modification have been synthesized through a template sol-gel route. Morphological and structural features of these compounds have been studied by scanning electron microscopy and Raman spectroscopy. The synthesized materials are porous nanostructured microtubes 10-300 μm in length and 3-5 μm in diameter. The size of nanoparticles forming tubes is 15-25 nm. Doping with zirconia (≤4 wt %) does not change the anatase crystal structure; at the same time, this is accompanied by an increase in the unit cell parameters and in the number of defects in the lattice. The availability of nanostructured TiO 2 -ZrO 2 as an anode material for a Li ion battery has been evaluated by the galvanostatic discharge-charge method. After 20 cycles in the range 3-1 V, the reversible capacity of TiO 2 -ZrO 2 was 140 mA h/g, while the capacity of the undoped TiO 2 was 65 mA h/g. The devel oped method for modification of titania is efficient from the standpoint of producing a promising anode material for Li ion battery.

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Composite containing nanosized titanium oxide and oxyfluoride and carbon synthesized in plasma of pulse high-voltage discharge

Cited by 14 publications

References 9 publications

Biomass-Derived Graphitic Carbon Encapsulated Fe/Fe3C Composite as an Anode Material for High-Performance Lithium Ion Batteries

Biomass-Derived Graphitic Carbon Encapsulated Fe/Fe3C Composite as an Anode Material for High-Performance Lithium Ion Batteries

Fluorine substituted molybdenum oxide as cathode material for Li-ion battery

Nanostructured zirconia-doped titania as the anode material for lithium-ion battery

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