Synthesis of Y[sub 2]O[sub 3] Nanospheres via Heat-Treatment of Cathodically Grown Y(OH)[sub 3] in Chloride Medium

Aghazadeh, Mustafa; Nozad, A.; Adelkhani, H.; Ghaemi, Mehdi

doi:10.1149/1.3469574

Cited by 38 publications

(16 citation statements)

References 30 publications

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“…This method has received more attention due to its inexpensive equipment, simple procedure, and mild deposition conditions. An easy control of oxide morphology and composition is possible via bath conditions and electrochemical parameters, such as applied potential and current density [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical preparation and properties of nanostructured Co3O4 as supercapacitor material

Aghazadeh¹

2012

J Appl Electrochem

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Nanostructured Co 3 O 4 was prepared via a simple two-step process: cathodic electrodeposition of cobalt hydroxide from additive free nitrate bath and then heat treatment at 400°C for 3 h. The prepared oxide product was characterized by powder X-ray diffraction, infrared spectroscopy, surface area measurement, scanning electron microscopy, and transmission electron microscopy. Morphological characterization showed that the oxide product was composed of porous nanoplates, and BET measurement displayed that the oxide plates have the average pore diameter and the surface area of 4.75 nm and 208.5 m 2 g -1 , respectively. The supercapacitive performance of the nanoplates was evaluated using cyclic voltammetry and charge-discharge tests. A specific capacitance as high as 393.6 F g -1 at the constant current density of 1 A g -1 and an excellent capacity retention (96.5% after 500 charge-discharge cycles) was obtained. These results indicate that Co 3 O 4 nanoplates can be recognized as high-performance electrode materials.

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Section: Introductionmentioning

confidence: 99%

Electrochemical preparation and properties of nanostructured Co3O4 as supercapacitor material

Aghazadeh¹

2012

J Appl Electrochem

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“…• C confirms dehydration of structural water from YOOH phase [9,36]. Decomposition profile of yttrium hydroxide-nitrate compounds is fairly complex with overlapping steps.…”

Section: Thermal and Spectral Analysismentioning

confidence: 74%

“…• C is supposed to be related with the first dehydration of chemisorbed and combined water from Y(OH) 3 and α-Y(OH) 3 [9,24]. The endothermic peak at around 450…”

Section: Thermal and Spectral Analysismentioning

confidence: 99%

“…Y 2 O 3 can be used as highefficient additives and functional composite materials like yttria stabilized zirconia films [1][2][3][4]. This material could be synthesized via several methods, including cathodic electrodeposition [5][6][7][8][9], gas-phase condensation [10], precipitation [11], sol-gel [12], pyrolysis [13], solvothermal [14], and hydrothermal synthesis [15][16][17]. Among these methods, the easy and clean cathodic electrodeposition method has been proven to be a versatile and controllable technique for the preparation of nanostructured materials.…”

Section: Introductionmentioning

confidence: 99%

“…Preparation of yttrium oxide by cathodic electrodeposition is simple and inexpensive [9]. In this method yttrium oxide is synthesized by two steps.…”

Section: Introductionmentioning

confidence: 99%

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Yttrium Oxide Nanoparticles Prepared by Heat Treatment of Cathodically Grown Yttrium Hydroxide

et al. 2011

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An easy two-step synthetic route is reported for the manufacture of yttrium oxide nanoparticles utilizing aqueous yttrium nitrate solution. In the first step, yttrium hydroxide precursor was grown on stainless steel electrode using a simple cathodic electrodeposition at room temperature. The subsequent second step includes the thermal decomposition of yttrium hydroxide powder at different temperatures for two hours. The synthesized products were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetery (DSC), FT-IR and Raman spectroscopy. Results showed that the as-deposited Y(OH) 3 is composed of nanoparticles with grain size of approximately 40-50 nm. Cubic-structured Y 2 O 3 phase with a porous morphology was finally formed when temperature was raised to 600• C. Results suggested that the final oxide nanoparticles are crystalline and consist only of yttrium oxide phase forming agglomerates of many primary particles with average diameter around 30 nm.

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Morphology‐Conserved Transformations of Metal‐Based Precursors to Hierarchically Porous Micro‐/Nanostructures for Electrochemical Energy Conversion and Storage

et al. 2017

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To meet future market demand, developing new structured materials for electrochemical energy conversion and storage systems is essential. Hierarchically porous micro-/nanostructures are favorable for designing such high-performance materials because of their unique features, including: i) the prevention of nanosized particle agglomeration and minimization of interfacial contact resistance, ii) more active sites and shorter ionic diffusion lengths because of their size compared with their large-size counterparts, iii) convenient electrolyte ingress and accommodation of large volume changes, and iv) enhanced light-scattering capability. Here, hierarchically porous micro-/nanostructures produced by morphology-conserved transformations of metal-based precursors are summarized, and their applications as electrodes and/or catalysts in rechargeable batteries, supercapacitors, and solar cells are discussed. Finally, research and development challenges relating to hierarchically porous micro-/nanostructures that must be overcome to increase their utilization in renewable energy applications are outlined.

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Synthesis of Y[sub 2]O[sub 3] Nanospheres via Heat-Treatment of Cathodically Grown Y(OH)[sub 3] in Chloride Medium

Cited by 38 publications

References 30 publications

Electrochemical preparation and properties of nanostructured Co3O4 as supercapacitor material

Electrochemical preparation and properties of nanostructured Co3O4 as supercapacitor material

Yttrium Oxide Nanoparticles Prepared by Heat Treatment of Cathodically Grown Yttrium Hydroxide

Morphology‐Conserved Transformations of Metal‐Based Precursors to Hierarchically Porous Micro‐/Nanostructures for Electrochemical Energy Conversion and Storage

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