Direct synthesis of Ni2Al(OH)7−x(NO3)x·nH2O layered double hydroxide nanolayers by SILD and their capacitive performance

Tolstoy, Valeri P.; Lobinsky, A.A.; Levin, Oleg V.; Kuklo, L. I.

doi:10.1016/j.matlet.2014.09.134

Cited by 15 publications

(8 citation statements)

References 16 publications

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“…[37][38][39] The broad band in the range of 3700~3200 cm À 1 is assigned to the OÀ H stretching vibration of the interlayered crystal water, which is hydrogenbonded to the TM slabs consisting of [TM(OH) 6 ] octahedra (Figure 2b). [40][41][42][43][44] Notably, the OÀ H vibration peaks corresponding to the crystal water molecules in NCÀ AcO À (3379 cm À 1 ) and NCÀ SO 4 2À (3363 cm À 1 ) shift to lower wavenumbers compared to those in NCÀ Cl À (3491 cm À 1 ) and NCÀ NO 3 À (3529 cm À 1 ), which indicates weaker hydrogen bonding between the crystal water and the TM slab in NCÀ AcO À and NCÀ SO 4…”

Section: àmentioning

confidence: 99%

Effect of Binding Affinity of Crystal Water on the Electrochemical Performance of Layered Double Hydroxides

Lee

Choi

2020

ChemSusChem

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The ever‐increasing demand for safe batteries has driven research efforts to develop aqueous rechargeable batteries. In this regard, Ni‐based layered double hydroxides (LDHs) have received marked attention owing to their adequate operating potential, high specific capacity, and decent cycling performance. Nevertheless, the effect of immobile intercalants (e. g., crystal water and anions) that are inherently present in the interlayer galleries is barely understood. In this paper, we report that the electrochemical performance of LDH largely depends on the extent to which the crystallinity is affected by the binding strength of crystal water to the transition metal slabs. A series of infrared spectroscopy and in‐situ X‐ray absorption analyses reveal that the lattice disordering in LDHs is beneficial for accommodating the stress during the (de)intercalation of carrier ions, which serves as the origin of their superior specific capacities and cycle life. This study presents a useful structure‐property relationship of the way in which the binding affinity of crystal water affects the key electrochemical properties of the host electrode materials.

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Section: àmentioning

confidence: 99%

Effect of Binding Affinity of Crystal Water on the Electrochemical Performance of Layered Double Hydroxides

Lee

Choi

2020

ChemSusChem

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“…The infrared (IR) spectrum of the pristine LDH in Figure 1 presents remarkable bands from -OH, nitrate and M-O stretching modes around 3400, 1370 and 600 cm −1 , respectively, typical in LDH structures [10]. The set of bands between 1750 and 550 cm −1 in the spectra of compounds, synthesized with gallic acid under air atmosphere, correspond to the aromatic ring, phenol and carboxylic groups [4,11].…”

Section: Resultsmentioning

confidence: 99%

Layered Double Hydroxide as a Vehicle to Increase Toxicity of Gallate Ions against Adenocarcinoma Cells

et al. 2016

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Abstract:The antineoplasic activity of gallic acid has been reported. This compound induces apoptosis and inhibits the growth of several neoplasic cells. However, this molecule is easily oxidized and degraded in the body. The aim of this work was to intercalate gallate ions into layered double hydroxide (LDH) nanoparticles under controlled conditions to reduce oxidation of gallate and to evaluate its toxicity against the A549 adenocarcinoma cell line. An isopropanol medium under nitrogen atmosphere was adequate to intercalate gallate ions with a lesser oxidation degree as detected by electron spin resonance spectroscopy. Concentrations of the hybrid LDH-gallate nanoparticles between 0.39 and 25 µg/mL reduced the cell viability to 67%, while the value reached with the pure gallic acid and LDH was 90% and 78%, respectively, thus proving that the combination of gallate ions with the inorganic nanoparticles increases the toxicity potential within this dose range.

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“…The SILD method provides a simple and effective means for creating metal oxide nanolayers for thin-film electrodes, which may result in significantly improved electronic conductivity and high electrochemical performance of pseudocapacitors. The possibility of creating electrode materials on the basis of thin-film nanolayers of layered double hydroxides, which showed a good electrochemical performance, has been shown in our previous work [15,16].…”

Section: Introductionmentioning

confidence: 88%

Red-ox reactions in aqueous solutions of Co(OAc)2 and K2S2O8 and synthesis of CoOOH nanolayers by the SILD method

Lobinsky¹,

Tolstoy²

2015

Nanosist.: fiz. him. mat.

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CoOOH nanolayers were first prepared by the successive ionic layer deposition (SILD) method using aqueous Co(OAc) 2 and K 2 S 2 O 8 solutions. The obtained nanolayers were investigated by SEM, EDX, XRD, FTIR spectroscopy and electrochemical techniques. SEM images showed that the layers formed by nanosheets of size approximately 80-100 nm which had a hexagonal crystal structure. Electrochemical study of nickel foam electrodes modified by CoOOH layer prepared by 50 SILD cycles demonstrates that specific capacitance of the film is 1520 F/g at current density 1 A/g. Repeated cycling for 1000 charge-discharge cycles demonstrates 2% capacitance fade, so such electrodes may be used as pseudocapacitor electrodes.

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Direct synthesis of Ni2Al(OH)7−x(NO3)x·nH2O layered double hydroxide nanolayers by SILD and their capacitive performance

Cited by 15 publications

References 16 publications

Effect of Binding Affinity of Crystal Water on the Electrochemical Performance of Layered Double Hydroxides

Effect of Binding Affinity of Crystal Water on the Electrochemical Performance of Layered Double Hydroxides

Layered Double Hydroxide as a Vehicle to Increase Toxicity of Gallate Ions against Adenocarcinoma Cells

Red-ox reactions in aqueous solutions of Co(OAc)2 and K2S2O8 and synthesis of CoOOH nanolayers by the SILD method

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