Morphology-controlled fabrication of Co3O4 nanostructures and their comparative catalytic activity for oxygen evolution reaction

Zhang, Lijuan; Li, Hejun; Li, Kezhi; Li, Lu; Wei, Jianfeng; Feng, Lei; Fu, Qiangang

doi:10.1016/j.jallcom.2016.04.084

Cited by 44 publications

(11 citation statements)

References 37 publications

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“…3a) was measured using the same ferro-ferricyanide oxidation-reduction system. Cobalt oxide Co 3 O 4 , as well-known material for its electrocatalytic activity [6,8,13,[33][34][35] in oxygen evolution reaction, was obtained during heat treatment of as-deposited Co(OH) 2 coatings at 673 K for 1 h. The lamellar structure and composition of tricobalt tetraoxide was confirmed in previous studies [23] by XRD, FTIR and XPS. In order to investigate the effect of temperature treatment to electroactive surface area, the same measurements as with Co(OH) 2 were performed (Fig.…”

Section: Determination Of Electroactive Surface Areasupporting

confidence: 60%

Electrocatalytic and pseudocapacitive properties of cobalt (hydro)oxide films on sintered metal fiber filter

Barauskienė

Valatka

2017

Mater Renew Sustain Energy

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Cobalt (hydro)oxide films on Bekipor ST 20AL3 sintered metal fiber were formed by electrochemical deposition under galvanostatic conditions using different electrolyte baths (nitrate, acetate and chloride). Cobalt oxide films were prepared via thermal treatment of as-deposited specimens at 673 K. Electroactive surface area of as-deposited and annealed films was estimated using oxidation-reduction system containing ferricyanide/ferrocyanide. Electrocatalytic and pseudocapacitive properties of the prepared films were investigated using 0.1 M NaOH aqueous solutions. The maximum specific capacitance of 1324 F g -1 was observed for a-Co(OH) 2 films electrodeposited from nitrate-containing electrolyte. Similarly, the highest electrocatalytic activity and stability in oxygen evolution reaction (OER) was determined to be characteristic for Co 3 O 4 films derived from nitrate bath.

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Section: Determination Of Electroactive Surface Areasupporting

confidence: 60%

Electrocatalytic and pseudocapacitive properties of cobalt (hydro)oxide films on sintered metal fiber filter

Barauskienė

Valatka

2017

Mater Renew Sustain Energy

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“…This process can improve the poor conductivity of metal oxides, and the resulting catalysts also usually exhibit bifunctional catalytic activities [ 25 , 26 ]. The morphologies of the transition metal oxides also play a key role in the heterogeneous electrocatalytic reaction, because more catalytic active sites can be exposed to facilitate the OER by refining the particle sizes or by increasing the porosity of the catalysts with greater specific surface area [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

An Ultrasonication-Assisted Cobalt Hydroxide Composite with Enhanced Electrocatalytic Activity toward Oxygen Evolution Reaction

Guo

Xie

et al. 2018

Materials

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A catalyst toward oxygen evolution reaction (OER) was synthesized by depositing cobalt hydroxide on carbon black. Ultrasonication was applied during precipitation to improve the performance of the catalyst. The ultrasonic-assisted process resulted in the refinement of the cobalt hydroxide particles from 400 nm to 50 nm, and the thorough incorporation of these particles with carbon black substrate. The resulting product exhibited enhanced OER catalytic activity with an onset potential of 1.54 V (vs. reversible hydrogen electrode), a Tafel slope of 18.18 mV/dec, and a stable OER potential at a current density of 10 mA cm−2, because of the reduced resistance of the catalyst and the electron transfer resistance.

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“…Ren et al [68] It was observed that Co 3 O 4 containing a 2% mass fraction of g-C 3 N 4 nanocomposite modified glassy carbon electrode shows excellent electrochemical performance towards the oxidation of hydrazine. Fu and co-workers [87] reported the synthesis of Co 3 O 4 nanostructures with different morphology by adjusting the urea concentration using the microwave-hydrothermal method. They investigated the influence of morphology on the catalytic activity for oxygen evolution reaction (OER).…”

Section: Catalytic Photocatalytic Electrocatalytic Propertiesmentioning

confidence: 99%

Synthesis and Characterization of Cobalt Oxide Nanostructures. a Brief Review

Mammadyarova¹

2021

AChJ

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The newest achievement in the synthesis of cobalt oxide nanoparticles are considered. Cobalt oxide nanoparticles have attracted a great attention due to their uncommon properties and application in a supercapacitor, optoelectronic device, Li-ion battery gas sensor and electrochromic devices. Recently, nanostructured transition metal oxides with valuable properties have become a new class of materials for many technological fields. Cobalt oxide nanoparticles obtained from various precursors show different size distribution as well as different optical, electrical, magnetic, and electrochemical properties. A reduction in particle size to nanometer-scale leads to changes in properties compared to bulk ones due to quantum size effects. Depending on the application area, the choice of an appropriate synthesis method for nanoparticles with desirable properties is a crucial factor. This work aims to provide additional information on the synthesis methods and properties of cobalt oxide nanoparticles

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Morphology-controlled fabrication of Co3O4 nanostructures and their comparative catalytic activity for oxygen evolution reaction

Cited by 44 publications

References 37 publications

Electrocatalytic and pseudocapacitive properties of cobalt (hydro)oxide films on sintered metal fiber filter

Electrocatalytic and pseudocapacitive properties of cobalt (hydro)oxide films on sintered metal fiber filter

An Ultrasonication-Assisted Cobalt Hydroxide Composite with Enhanced Electrocatalytic Activity toward Oxygen Evolution Reaction

Synthesis and Characterization of Cobalt Oxide Nanostructures. a Brief Review

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