Studies on structural, optical, electrical and morphological properties of LiCoO<sub>2</sub> thin films prepared by sol–gel method

Balakrishnan, T.; Sankarasubramanian, N.; Kavitha, A.; Kathalingam, A.

doi:10.1080/14328917.2018.1431190

Cited by 10 publications

(9 citation statements)

References 31 publications

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“…Balakrishnan et al [45] used Tauc plots to extrapolate a gap between 2.5 and 3.24 eV depending on annealing temperature of their sol-gel grown films. The largest gap value here corresponded to the highest annealing temperature.…”

Section: F Comparison With Experimentsmentioning

confidence: 99%

Optical response and band structure of LiCoO2 including electron-hole interaction effects

et al. 2021

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The optical response functions and band structures of LiCoO 2 are studied at different levels of approximation, from density functional theory (DFT) in the generalized gradient approximation (GGA) to quasiparticle selfconsistent QSGW (with G for Green's function and W for screened Coulomb interaction) without and with ladder diagrams (QSG Ŵ ) and the Bethe Salpeter Equation (BSE) approach. The QSGW method is found to strongly overestimate the band gap and electron-hole or excitonic effects are found to be important. They lower the quasiparticle gap by only about 11% but the lowest energy peaks in absorption are found to be excitonic in nature. The contributions from different band to band transitions and the relation of excitons to band-to-band transitions are analyzed. The excitons are found to be strongly localized. A comparison to experimental data is presented.

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Section: F Comparison With Experimentsmentioning

confidence: 99%

Optical response and band structure of LiCoO2 including electron-hole interaction effects

et al. 2021

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“…Indeed, the band gap of this sample is smaller than the band gap of LiCoO 2 , which is widely used as an electrode in lithium-ion batteries, which is 2.7 eV. 15 …”

Section: Resultsmentioning

confidence: 90%

“…Indeed, the band gap of this sample is smaller than the band gap of LiCoO 2 , which is widely used as an electrode in lithium-ion batteries, which is 2.7 eV. 15 The variation of Ln(a) versus (hn) is plotted in Fig. 5 and it was used to determine the Urbach energy, which describes the disorder of a material, using:…”

Section: Optical Propertiesmentioning

confidence: 99%

Structural, optical, electric and dielectric characterization of a NaCu_0.2Fe_0.3Mn_0.5O₂ compound

et al. 2022

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“…Different methods and synthesis routes such as sol-gel (Balakrishnan et al 2018;and Gao et al 2015), flux-coating (Mizuno et al 2014), one-step electrochemicalhydrothermal (Azib et al 2015), combustion (Rodrigues et al 2001), microwave (Hu et al 2004), hydrothermal (Burukhin et al 2002), thermal decomposition (Mizuno et al 2012) and auto flame (Singh et al 2018), were used to produce the LiCoO2.…”

Section: 21mentioning

confidence: 99%

“…In another study (Balakrishnan et al 2018), thin films of LiCoO2 were prepared by spin coating deposition via a sol-gel process. The annealing temperature of 275 °C shows to be effective in the crystalline nature with a preferred orientation along the (003) plane of the rhombohedral structure.…”

Section: 21mentioning

confidence: 99%

Advances in Cathode Nanomaterials for Lithium-Ion Batteries

Costa

Lanceros‐Méndez

2019

Nanostructured Materials for Next-Generation Energy Storage and Conversion

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Energy resources, consumption, and management are among the most important issues of this century. Our dependence on fossil fuels should be changed by eco-friendlier renewable energies. Further, the generated electrical energy should be stored for improving mobile applications, being batteries the most used system for this purpose. Lithium-ion batteries are the most promising battery type and are composed of three main elements: cathode, anode and separator/electrolyte. The active material of the cathode is primarily responsible for the battery capacity, and for that reason, different cathode materials have been developed and explored for lithium-ion batteries. In the present work, the most relevant cathode materials are presented, their main properties and characteristics described and their advantage and disadvantage analyzed, allowing understand to which extend those material are suitable for specific applications in this field.

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Studies on structural, optical, electrical and morphological properties of LiCoO₂ thin films prepared by sol–gel method

Cited by 10 publications

References 31 publications

Optical response and band structure of LiCoO2 including electron-hole interaction effects

Optical response and band structure of LiCoO2 including electron-hole interaction effects

Structural, optical, electric and dielectric characterization of a NaCu_0.2Fe_0.3Mn_0.5O₂ compound

Advances in Cathode Nanomaterials for Lithium-Ion Batteries

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Studies on structural, optical, electrical and morphological properties of LiCoO2 thin films prepared by sol–gel method

Cited by 10 publications

References 31 publications

Optical response and band structure of LiCoO2 including electron-hole interaction effects

Optical response and band structure of LiCoO2 including electron-hole interaction effects

Structural, optical, electric and dielectric characterization of a NaCu0.2Fe0.3Mn0.5O2 compound

Advances in Cathode Nanomaterials for Lithium-Ion Batteries

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Studies on structural, optical, electrical and morphological properties of LiCoO₂ thin films prepared by sol–gel method

Structural, optical, electric and dielectric characterization of a NaCu_0.2Fe_0.3Mn_0.5O₂ compound