Directly grown Sr–Co layered double hydroxide (LDH) entangled two dimensional nanosheet film with superior performances

Bailmare, Deepa B.; Deshmukh, Kavita A.; Sivaraman, P.; Peshwe, D. R.; Dhoble, S.J.; Deshmukh, Abhay D.

doi:10.1016/j.electacta.2019.135063

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…Such devices have charge capacities with a longer service life. , Materials with layered double hydroxides (LDHs) structure usually have the chemical equation of [M 1– X 2+ M X 3+ (OH) 2 ] X + [A x / n n – ] x + · m H 2 O. They have a two-dimensional (2D) layered structure that offers the benefit of adequate active sites due to the larger surface area . They also have the capability to alter the characteristics of metal cations and to realize anion exchange while maintaining their structural characteristics .…”

Section: Introductionmentioning

confidence: 99%

“…They have a two-dimensional (2D) layered structure that offers the benefit of adequate active sites due to the larger surface area. 4 They also have the capability to alter the characteristics of metal cations and to realize anion exchange while maintaining their structural characteristics. 5 Hence, LDH materials have high application values in various fields, including biotechnology, energy storage, and chemical catalysis.…”

Section: Introductionmentioning

confidence: 99%

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Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Feng

Zhang

et al. 2020

Energy Fuels

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It still remains a major challenge to maintain the excellent lithium ion-storage performance of layered double hydroxide (LDH) for lithium ion battery anodes at high current density and long cycle times. Herein, a hybrid material was developed by anchoring Co/Ni/ LDH (CoNi-LDH) on the surface of graphene oxide (GO) to obtain good structural stability. During the growth process, the β phase with a low value (4.6 Å) of interlayer spacing was converted to the α phase with a high value (8.1 Å) of interlayer spacing and the sheet became thinner than that of CoNi-LDH alone. X-ray photoelectron spectroscopy (XPS) results demonstrate the formation of the CO chemical bond between the ultra thin CoNi-LDH and GO, which increased the structural stability and effectively reduced the charge-transfer impedance. As expected, the long-life cycling stability with a specific capacity of 440 mAh/g for 500 cycles was achieved at a high current density of 5 A/g, indicating that the structural degradation of CoNi-LDH was successfully suppressed by the introduction of GO.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Feng

Zhang

et al. 2020

Energy Fuels

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“…One of the most effective methods is to add carbon-based materials to increase the conductivity [28,29]. Cations can be effectively adsorbed on the surface and interlayer of graphene oxide (GO) through electrostatic attraction, thus increasing the surface area of the sample, promoting the oxidation of metal cations, and resulting in many active adsorption sites [30,31]. LDH/carbon nanocomposites obtained through the reassembly of LDH and carbon nanomaterials can effectively retain their original structure to fully inherit the inherent characteristics [32,33].…”

Section: Introductionmentioning

confidence: 99%

Bimetallic electron-induced phase transformation of CoNi LDH-GO for high oxygen evolution and supercapacitor performance

Zhao

Liu

et al. 2022

Sci. China Mater.

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“…Except for the conventional hydroxides and sulfides, layered double hydroxides (LDHs), formulated as [M 2+ 1-x N 3+ x (OH) 2 ] x+ A nx/n , 18,19 where M and N represent divalent or trivalent metal ions respectively, A refers to the intercalated anion, have also been applied as electrode materials for their great advantages such as large specific surface area, adjustable chemical composition, and high redox activity. [20][21][22] So far, numerous binary LDH-based materials, such as SrCo, 23 FeCo, 24 NiCo, [25][26][27] NiFe, 28 and CoMn, 29 have been developed. Although LDHs are equipped with lots of merits as electrode materials, their defects are also apparent, among which the poor cycle stability limits the practical application heavily.…”

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confidence: 99%

NiCoAl Ternary Metal Hydroxides Prepared by Fluorine Ion Assisted Electrodeposition Process for Long Lifespan Supercapacitor Electrodes

Geng¹,

Hu²,

Wu³

et al. 2022

J. Electrochem. Soc.

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NiCo-based layered double hydroxides (NiCo-LDHs) have superior properties as electrode materials for supercapacitors, but poor cycle performance significantly limits their application. An effective strategy to tackle this issue is to dope inactive Al that could stabilize the metallic layers to form ternary hydroxides. However, the desired ternary electrodes with appropriate content of Al3+ are difficult to prepare by conventional electrodeposition due to the great difference in solubility product constants (Ksp) of corresponding hydroxides, where the non-electroactive Al(OH)3 (Ksp=1.3×10‒33) are preferentially deposited rathjer than the hydroxides of nickel and cobalt (Ksp=2.0×10‒15, 1.6×10‒15). Here, we propose a novel electrodeposition method assisted by F‒ to control Al3+ content in NiCoAl-LDHs. By adjusting the concentration of F‒ in the electrolyte, Al3+ content, as well as the morphology and electrochemical performance of the electrodes, could be manipulated. With the optimum ratio of F‒ to Al3+, the as-obtained electrode shows high specific capacitance along with a long lifespan (54.1%, 10000 cycles). An asymmetric supercapacitor is assembled using active carbon as the negative electrodes, which displays the maximal energy density of 35.5 Wh kg−1 at the power density of 477.3 W kg−1, with a long lifespan (75%, 10000 cycles).

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Directly grown Sr–Co layered double hydroxide (LDH) entangled two dimensional nanosheet film with superior performances

Cited by 15 publications

References 24 publications

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Bimetallic electron-induced phase transformation of CoNi LDH-GO for high oxygen evolution and supercapacitor performance

NiCoAl Ternary Metal Hydroxides Prepared by Fluorine Ion Assisted Electrodeposition Process for Long Lifespan Supercapacitor Electrodes

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