Hierarchical porous ZnMn2O4 synthesized by the sucrose-assisted combustion method for high-rate supercapacitors

Huang, Tsung-Chuan; Zhao, Chenhao; Qiu, Zehai; Luo, Jiangshui; Zhang, Hu

doi:10.1007/s11581-016-1817-8

Cited by 48 publications

(7 citation statements)

References 21 publications

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“…The penetration of electrolyte ions and the electrochemical activation of the materials may increase the specific capacitance. A similar phenomenon has been observed by other authors [54,55].…”

Section: Electrochemical Measurementssupporting

confidence: 91%

Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis

Kouass¹,

Fadhalaoui²,

Dhaouadi³

et al. 2020

Electrochemical Impedance Spectroscopy

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Most of the work has been done on the optical properties of the rare earth doped CePO 4 , so there are few studies on the effect of metal ion doping on CePO 4. The doping improves the properties of the compounds and can lead to new properties. It is the first time, that multi-ionic doping process is used in the CePO 4 matrix, in order to improve the ionic conductivity and the electrochemical stability. The low percentage of (Cd 2+ ,Li +), Cr 3+ ,Bi 3+ dopant affect the structure showing a weak decrease in the lattice parameters compared to the CePO 4. Impedance spectroscopy analysis was used to analyze the electrical behavior of samples as a function of frequency at different temperatures. The total electrical conductivity plots obtained from impedance spectra shows an increase of the total conductivity as Li, Crcontent increases. The determined energy gap values decrease with increasingly Li + , Cr 3+ and Bi 3+ doping content. Electrochemical tests showed an improved capacity when increasing the Li + ,Cr 3+ and Bi 3+ content and a stable cycling performance.

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Section: Electrochemical Measurementssupporting

confidence: 91%

Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis

Kouass¹,

Fadhalaoui²,

Dhaouadi³

et al. 2020

Electrochemical Impedance Spectroscopy

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“…ZnMn 2 O 4 is an interesting compound that has been widely used as an electrode for Li-ion batteries due to its low cost and being environmentally friendly [19,20,21,22,23,24]. Also, this material has been used as a supercapacitor [25,26,27,28,29] and thermistor [30] due to its structural, physical, and chemical properties. It has been reported that zinc manganite shows strong catalytic activity [31,32,33,34,35]; therefore, this material could perform well as a gas sensor.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnMn2O4 Nanoparticles by a Microwave-Assisted Colloidal Method and their Evaluation as a Gas Sensor of Propane and Carbon Monoxide

Morán-Lázaro

Guillén-López

López–Urías

et al. 2018

Sensors

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Spinel-type ZnMn2O4 nanoparticles were synthesized via a simple and inexpensive microwave-assisted colloidal route. Structural studies by X-ray diffraction showed that a spinel crystal phase of ZnMn2O4 was obtained at a calcination temperature of 500 °C, which was confirmed by Raman and UV-vis characterizations. Spinel-type ZnMn2O4 nanoparticles with a size of 41 nm were identified by transmission electron microscopy. Pellet-type sensors were fabricated using ZnMn2O4 nanoparticles as sensing material. Sensing measurements were performed by exposing the sensor to different concentrations of propane or carbon monoxide at temperatures in the range from 100 to 300 °C. Measurements performed at an operating temperature of 300 °C revealed a good response to 500 ppm of propane and 300 ppm of carbon monoxide. Hence, ZnMn2O4 nanoparticles possess a promising potential in the gas sensors field.

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“…Specifically, at low concentrations, palm sugar acts as a self-assembling agent to promote the assembly of the nanorods into 3D hierarchical frameworks via a branching mechanism. Sucrose (C 12 H 22 O 11 ) is a disaccharide composed of fructose and glucose monosaccharides linked by an ether bond, which can serve as a chelating agent . In the presence of water, sucrose is decomposed into two monosaccharides, namely fructose and glucose, which can be further oxidized into glycolic acid, saccharic acid, and trihydroxy butyric acid with several −OH and carboxyl (−COOH) groups. , In particular, the −COOH groups are able to combine with metal ions, and amorphous spherical particles are generated from the complexing reactions between the tungsten cations and hydrocarboxylic acid (resulting from the hydrolysis of sucrose).…”

Section: Results and Discussionmentioning

confidence: 99%

Palm Sugar-Induced Formation of Hexagonal Tungsten Oxide with Nanorod-Assembled Three-Dimensional Hierarchical Frameworks for Nitrogen Dioxide Sensing

Septiani

Shukri

Saputro

et al. 2022

ACS Sustainable Chem. Eng.

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This work demonstrates the first utilization of natural palm sugar to induce the direct formation of hexagonal tungsten oxide (WO 3 ) with a hierarchical three-dimensional (3D) structure assembled by nanorods. The concentration of palm sugar controls the final phase and morphology of the WO 3 product. Lower concentrations of palm sugar favor the formation of hexagonal WO 3 with a nanorod-assembled hierarchical 3D morphology, while higher concentrations promote the formation of spherical monoclinic WO 3 particles. When employed for the sensing of toxic nitrogen dioxide (NO 2 ) gas, the hierarchical 3D hexagonal WO 3 particles exhibit a very high response to NO 2 gas at an optimum temperature of 250 °C, while also showing outstanding selectivity and stable responses toward NO 2 gas over a period of 24 days. The superior NO 2 sensing performance of these particles is attributed to the hierarchical 3D structure, which can offer more adsorption sites for NO 2 molecules, while the assembling nanorods may provide more effective diffusion and transport for the NO 2 molecules. Furthermore, the density functional theory (DFT) calculations reveal that NO 2 can gain more charge from hexagonal WO 3 than from monoclinic WO 3 upon adsorption, leading to a greater change in resistance.

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Hierarchical porous ZnMn2O4 synthesized by the sucrose-assisted combustion method for high-rate supercapacitors

Cited by 48 publications

References 21 publications

Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis

Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis

Synthesis of ZnMn2O4 Nanoparticles by a Microwave-Assisted Colloidal Method and their Evaluation as a Gas Sensor of Propane and Carbon Monoxide

Palm Sugar-Induced Formation of Hexagonal Tungsten Oxide with Nanorod-Assembled Three-Dimensional Hierarchical Frameworks for Nitrogen Dioxide Sensing

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Hierarchical porous ZnMn2O4 synthesized by the sucrose-assisted combustion method for high-rate supercapacitors

Cited by 48 publications

References 21 publications

Designing and Synthesis of (Cd2+, Li+), Cr3+, Bi3+ Doped CePO4 Materials Optical, Electrochemical, Ionic Conductivity Analysis

Designing and Synthesis of (Cd2+, Li+), Cr3+, Bi3+ Doped CePO4 Materials Optical, Electrochemical, Ionic Conductivity Analysis

Synthesis of ZnMn2O4 Nanoparticles by a Microwave-Assisted Colloidal Method and their Evaluation as a Gas Sensor of Propane and Carbon Monoxide

Palm Sugar-Induced Formation of Hexagonal Tungsten Oxide with Nanorod-Assembled Three-Dimensional Hierarchical Frameworks for Nitrogen Dioxide Sensing

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Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis

Designing and Synthesis of (Cd²⁺, Li⁺), Cr³⁺, Bi³⁺ Doped CePO₄ Materials Optical, Electrochemical, Ionic Conductivity Analysis