Ordered LiFe5O8 thin films prepared by pulsed laser deposition as an anode material for all-solid thin film batteries

Subash, Sruthy; Udhayakumar, S.; Kumaresan, Lakshmanan; Patro, L.N.; Kumaran, V.; Kumar, E. Senthil; Navaneethan, M.; Kim, Do Kyung; Bharathi, K. Kamala

doi:10.1016/j.electacta.2023.142318

Cited by 7 publications

(3 citation statements)

References 34 publications

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“…Figure a shows the discharge and charge profiles of the graphene/Mo 2 C films at a current density of 0.5 μA/cm 2 . The estimated discharge capacity is approximately 14.7 μAh/cm 2 , which is comparable with the specific capacity obtained for other transition metal-based anode thin films. , Since the open-circuit potential of the cell is 1.2 V, the discharge commences from 1.2 to 0 V for the first cycle alone. The capacity achieved here is purely area specific and can be tuned further.…”

Section: Resultssupporting

confidence: 80%

“…The capacity retained depends mainly on the electrode response as well as the number of cycles they were subjected to. The estimated capacity retention is much better than that of conversion types (including thin film types) and some of the transition metal oxide anode materials. − A comparison table detailing the capacity retention attained in the present work and for other thin-film-based anode electrodes and layered transition metal oxides can be found in Table S4. The rate capability of Mo 2 C/graphene electrodes was evaluated at different current rates ranging from 5 to 25 mA and again at 5 mA, which provides a capacity of 12.3, 11.0, 9.8, 8.4, 7.0, and 11.5 μAh/cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 79%

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Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Raveendran,

Subash,

Ponnusamy

et al. 2024

ACS Appl. Nano Mater.

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Metal catalysts in the chemical vapor deposition (CVD) growth of graphene have played a vital role in the development of various growth concepts. Here, we report a selforganized growth of a Mo 2 C/few-layer graphene core−shell type nanostructure on the oxide (SiO 2 ) substrate under the bifunctional catalytic effect of the group VI transition metal molybdenum (Mo). Due to its stable metal carbide-forming ability, the Mo catalyst promoted the formation of a few-layer graphene by bulk segregation of carbon atoms. Cross-sectional transmission electron microscopy provided evidence for the few-layer graphene formation not only on the catalyst surface but also at the SiO 2 / catalyst interface, embedding the Mo 2 C nanoisland formed due to thermal dewetting. Control experiments performed on the sapphire substrate helped us unveil the synergistic role of the catalystsubstrate interaction and catalyst morphology in the formation of graphene on the oxide substrate. The underlying growth mechanism resembled that of the famous tip growth model of carbon nanotube growth, leading to the formation of Mo 2 C/graphene core−shell type structures. Electrochemical studies performed on transferred Mo 2 C/graphene composite anode film in a coin-cell configuration revealed an areal capacity of 14 μAh/cm 2 with an excellent capacity retention of 86% over 100 cycles at a current density of 0.5 μA/cm 2 . Our results demonstrate that the Mo 2 C-few-layer graphene composite film grown via the CVD route can be a potential anode material for Li-ion microbatteries.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 79%

Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Raveendran,

Subash,

Ponnusamy

et al. 2024

ACS Appl. Nano Mater.

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“…The magnetic properties of the films are characterized through magnetization measurement using a SQUID magnetometer, and the effects of film thickness and structural defects on the magnetic properties of the LiFe 5 O 8 films are discussed. This investigation provides a way of changing the thickness to manipulate the microstructure and the magnetic properties of LiFe 5 O 8 films, allowing them to adapt to diverse technological applications, e.g., electrodes for rechargeable lithium-ion batteries, various components in microwave devices, and magnetic insulators for spin filtering in spintronics [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Film Thickness on Microstructural and Magnetic Properties of Lithium Ferrite Films Prepared on Strontium Titanate (001) Substrates

Liu,

Zhang,

et al. 2023

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Epitaxial lithium ferrite (LiFe5O8) films with different thicknesses were successfully fabricated on strontium titanate (SrTiO3) (001) substrates using the magnetron sputtering deposition technique. The microstructural and magnetic properties of the films were characterized by an advanced transmission electron microscope and a magnetic measurement device. It was found that the formation of structural defects can be influenced by the thickness of the film. In addition to misfit dislocations, orientation domains form in thinner films and twin boundaries appear in thicker films, respectively, contributing to the misfit strain relaxation in the heterosystem. The magnetic measurement showed that the thinner films have enhanced magnetization and a relatively lower coercive field compared with the thicker films containing antiferromagnetic twin boundaries. Our results provide a way of tuning the microstructure and magnetic properties of lithium ferrite films by changing the film thickness.

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Unmodified α-LiFe5O8 as potential anode material of lithium ion battery and the revelation of conversion mechanism

Tang,

Kang,

Shui

2024

Journal of Solid State Chemistry

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Ordered LiFe5O8 thin films prepared by pulsed laser deposition as an anode material for all-solid thin film batteries

Cited by 7 publications

References 34 publications

Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Effect of Film Thickness on Microstructural and Magnetic Properties of Lithium Ferrite Films Prepared on Strontium Titanate (001) Substrates

Unmodified α-LiFe5O8 as potential anode material of lithium ion battery and the revelation of conversion mechanism

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Ordered LiFe5O8 thin films prepared by pulsed laser deposition as an anode material for all-solid thin film batteries

Cited by 7 publications

References 34 publications

Self-Organized Growth of the Mo2C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Self-Organized Growth of the Mo2C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Effect of Film Thickness on Microstructural and Magnetic Properties of Lithium Ferrite Films Prepared on Strontium Titanate (001) Substrates

Unmodified α-LiFe5O8 as potential anode material of lithium ion battery and the revelation of conversion mechanism

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Product

Resources

About

Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process

Self-Organized Growth of the Mo₂C/Graphene Core-Shell Nanostructured Anode Material for Lithium-Ion Batteries via a Catalytic CVD Process