Hollow mesoporous heterostructures negative electrode comprised of CoFe2O4@Fe3O4 for next generation lithium ion batteries

Karunakaran, Gopalu; Kundu, Manab; Maduraiveeran, Govindhan; Kolesnikov, Еvgeny; Горшенков, М.В.; Balasingam, Suresh Kannan; Kumari, Shilpa; Sasidharan, Manickam; Кузнецов, Денис

doi:10.1016/j.micromeso.2018.06.005

Cited by 50 publications

(15 citation statements)

References 29 publications

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“…Figure 7 represents the BET nitrogen adsorption/desorption isotherm curve of the as-prepared NC4C nanocomposite. The isotherm curve closely matches to a typical type IV isotherm graph confirming the mesoporous property of the nanocomposite [20]. The BET analysis is conducted mainly to provide surface areas, pore sizes, and pore volumes of the as-prepared nanocomposites.…”

Section: Resultssupporting

confidence: 61%

Superparamagnetic Behaviour and Surface Analysis of Fe3O4/PPY/CNT Nanocomposites

Rajagukguk

Simamora

Saragih

et al. 2020

Journal of Nanomaterials

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The superparamagnetic property of nanomaterials such as Fe3O4 has been considered to be promising for various applications. In this paper, Fe3O4/PPY/CNT nanocomposites were synthesized with utilizing natural iron sand by a coprecipitation method. The as-precipitated Fe3O4 NPs were combined with carbon nanotubes (CNTs) using conductive polypyrrole (PPY) as linking agents. The Fe3O4/PPY/CNT nanocomposites were systematically characterized by FE-SEM, EDS, XRD, BET, and FTIR. Furthermore, the effects of CNTs on magnetic and thermal properties of nanocomposites were investigated by VSM and thermal gravimetric analysis (TGA), respectively. The composites exhibited significant decrease of coercivity value with the content of CNTs increasing. The VSM result confirmed that Fe3O4/PPY/CNT nanocomposites were superparamagnetic. It was found that by increasing the amounts of CNTs, the magnetization of Fe3O4/PPY/CNT nanocomposites gradually decreased. The addition of CNTs is intended to improve the mesoporous property as proved by BET analysis which has the potential application as a nanocatalyst.

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Section: Resultssupporting

confidence: 61%

Superparamagnetic Behaviour and Surface Analysis of Fe3O4/PPY/CNT Nanocomposites

Rajagukguk

Simamora

Saragih

et al. 2020

Journal of Nanomaterials

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“…Moreover, these issues cause more damage to the electrochemical performances of the battery system [18,22,23] . As a result, many researchers have focused on fabricating metal oxide‐based transition materials which can overcome the volume expansion behavior to provide a higher coulombic efficiency and longer lifetime [24–30] …”

Section: Introductionmentioning

confidence: 99%

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Nanthagopal

Santhoshkumar

et al. 2022

ChemElectroChem

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Currently available graphitic‐based anodes for lithium‐ion storage do not meet the present‐day energy requirements. Concerning the upcoming energy demands, it is necessary to discover high‐performance anode materials that are suitable for lithium‐ion energy storage systems. Herein, a CoV2O6 (cobalt vanadium oxide, cobalt vanadate denoted as CV) anode material using a simple solvothermal technique is synthesized. Furthermore, the effects of modifying the molar concentration of the precursor materials are investigated. Interestingly, there is no change in the crystal structure, but there is a morphological evolution in the materials. Due to the morphological variations, the electrochemical performances vary significantly. Among the synthesized materials, the CV‐2 compound performs the best, exhibiting excellent performance for lithium‐ion batteries as an anode. At the end of 500 cycles, the material delivers a specific discharge capacity of 391.03 mAh g−1 with a current density of 500 mA g−1.

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“…For this fast charging rate, the charge time will sharply be short. The diffusion resistance of lithium ions shuttling between electrode material is the main fact which restricts the fast chargeability of LIBs [2,3]. Till now, many researchers focused on improving the ions' diffusion velocity in electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of Coated Separator Surface Morphology on Electrolyte Interfacial Wettability and Corresponding Li–Ion Battery Performance

Huang

Tian

et al. 2020

Polymers

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In order to study the effect of interfacial wettability of separator on electrochemical properties for lithium–ion batteries, two different kinds of polyvinylidene fluoride-hexafluoropropylene (PVDF–HFP) solution are prepared and used to coat onto a polypropylene (PP) microporous membrane. It is found that the cell performance of a coated separator using aqueous slurry (WPS) is better than that of the coated separator using acetone (APS) as the solvent. The separator with flat and pyknotic surface (PP and APS) has a strong polar action with the electrolyte, where the polar part is more than 80%. To the contrary, the WPS has a roughness surface and when the PVDF–HFP particles accumulate loose, it makes the apolar part plays a dominate role in surface free energy; the dispersive energy reaches to 40.17 mJ m−2. The WPS has the lowest immersion free energy, 31.9 mJ m−2 with the electrolyte, and this will accelerate electrolyte infiltration to the separator. The loose particle accumulation also increases the electrolyte weight uptake and interfacial wettability velocity, which plays a crucial role in improving the cell performance such as the ionic conductivity, discharge capacity and the C-rate capability.

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Hollow mesoporous heterostructures negative electrode comprised of CoFe2O4@Fe3O4 for next generation lithium ion batteries

Cited by 50 publications

References 29 publications

Superparamagnetic Behaviour and Surface Analysis of Fe3O4/PPY/CNT Nanocomposites

Superparamagnetic Behaviour and Surface Analysis of Fe3O4/PPY/CNT Nanocomposites

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Effects of Coated Separator Surface Morphology on Electrolyte Interfacial Wettability and Corresponding Li–Ion Battery Performance

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