A facile synthesis strategy of fungi-derived porous carbon-based iron oxides composite for asymmetric supercapacitors

Zhao, Shanhai; Zheng, Ke; Zhang, Zhifang; Wang, Haibing; Ren, Junfeng; Li, Huiyu; Jiang, Feng; Liu, Yongsheng; Hong-ping, Cao; Fang, Zebo; Zhu, Yanyan

doi:10.1016/j.ceramint.2021.12.105

Cited by 12 publications

(4 citation statements)

References 40 publications

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“…This could be due to an increase in the number of charge carriers and their mobility as temperature increases. To analyse the impedance spectra, the results data are fitted using electrochemical impedance spectroscopy (EIS) software and frequently represented by an ideal equivalent circuit, as shown in the inset figure 5, where conduction through grain and grain boundaries predominates [32,38]. The equivalent circuit for the pristine silver phosphate glass is composed of a parallel R b and CPE b (bulk resistance and bulk capacitance) combination, but the glasses doped by Fe 2 O 3 are composed of a series array of two subcircuits, one for grain and the other for grain boundary contribution.…”

Section: Impedance Plotmentioning

confidence: 99%

“…The notable feature of Iron is having multiple oxidation states (Fe +3 and Fe +2 ), which gives a high capacity and thus can be employed as an effective electrode for MIBs [33,34]. Based on these appealing properties, Iron oxide has also been extensively researched and synthesized in various chemical forms for use as electrode material in energy storage devices such as batteries, fuel cells, and supercapacitors using various processes [35][36][37][38][39]. In this connection, Phosphate glass was doped with different amounts of iron oxide (10, 20, 30, and 40) aiming to fabricate a new cathode for MIBs with high storage capacity.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Khalil

Hameed²,

Farrag³

et al. 2022

J. Phys. D: Appl. Phys.

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The realization of a practical magnesium battery is combined with the development of a high kinetic cathode and compatible electrolyte to facilitate the redox process. For this reason, silver phosphate glasses in the binary system (Fe2O3-AgPO3) are prepared using the conventional quenching method. The glasses were defined in the form [Fe2O3]x[AgPO3](100-x) and the composition with 0  x  40 wt. %. The molar volumes and densities were measured. These glass systems were characterized using XRD, FTIR spectroscopy, UV–Vis-NIR spectrophotometer, electrochemical procedures and impedance spectroscopy. X-ray diffraction revealed that pristine AgPO3 sample was formed in a glassy state, whereas two crystalline phases (AgFeP2O7 and Fe2O3) were formed after the incorporation of Fe2O3 by different concentrations. Bond assignments associated with different functional groups were investigated by an FT-IR spectroscopy. The values of the band gap were decreased with the increase of Fe2O3 content. The effect of grains and grain boundaries in a heterostructure made up of Fe2O3 and AgFeP2O7 crystallites grown in silver phosphate glasses was studied using impedance spectroscopy. The complex impedance, electrical conductivity, and complex electric modulus were measured in terms of frequency and temperature dependency in [Fe2O3]x-[AgPO3](1-x). In the studied glass systems, non-Debye relaxation was observed. Under a variable regime, ac conductivity follows a modified Jonscher's law Arrhenius fitting of multiple relaxation processes in the material yielded activation energy of (0.12 eV–0.271 eV) which support a Maxwell–Wagner relaxation model in the heterostructure glasses at high temperatures and low frequencies. The dc conductivity decreases with iron rate and follows the Arrhenius law with very low activation energy (0.12–0.27 eV. Mg//electrolyte//Glass coin cells are assembled and show an initial discharge capacity of up to ∼564 mAh/g. These materials are attractive for application in modernistic electrochemical devices because of their great compositional and preparation variety which enables tuning the types and techniques of electrical conduction in the material.

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Section: Impedance Plotmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Khalil

Hameed²,

Farrag³

et al. 2022

J. Phys. D: Appl. Phys.

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“…These values are significantly higher than those of similar electrode materials shown in the comparative electrochemical performance chart (Table S2). ,− Figure S6a shows the SEM image of ZnSe–SnSe 2 after cyclic testing, revealing that ZnSe–SnSe 2 , PVDF, and conductive carbon black are uniformly distributed onto the nickel foam. A comparative analysis of the SEM images taken before cycling indicates that the original microcubes experience significant aggregation and pulverization during prolonged charge–discharge cycles.…”

Section: Resultsmentioning

confidence: 99%

Microcubes of ZnSe–SnSe₂ Encapsulated within Graphene for High-Performance Asymmetric Supercapacitors

Zhao,

Feng,

Zhou

et al. 2024

ACS Appl. Nano Mater.

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High-capacity SnSe2 cathode materials combine the advantages of conversion and alloying reactions, showing great prospects in supercapacitors. However, they have poor cycling performance and low electronic conductivity. To effectively improve their electrochemical performance, a bimetallic selenide heterostructure was constructed and a three-dimensional graphene (3DG) carbon layer was encapsulated. 3DG increases the specific surface areas of the material, stabilizes the internal structures, and promotes the reaction kinetics. The obvious lattice distortions and mismatches at the ZnSe–SnSe2 heterointerfaces generate a large number of crystal defects and active sites for the adsorption/desorption of OH– ions, which is beneficial for the insertion and extraction of ions during the cycling processes and further enhances the electronic conductivity of the electrode material. Benefiting from these two strategies, 3DG/ZnSe–SnSe2 exhibits a high specific capacity of 1515.2 F g–1 at 1 A g–1 and maintains a capacity retention rate of 90.1% after 3000 cycles at 5 A g–1. Furthermore, the asymmetric supercapacitor 3DG/ZnSe–SnSe2//AC assembled with activated carbon (AC) exhibits excellent electrochemical performance, demonstrating an energy density of 25.3 Wh kg–1 at 750 W kg–1 and a remarkable capacity retention rate of 91.3% after 20,000 cycles at 5 A g–1.

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“…Porous carbons from various synthesis routes have been explored as high-surface area electrodes for supercapacitors [14,15]. Asphalt, a petroleum waste, has been used as a precursor to high-surface area carbons that were used as electrodes in batteries and supercapacitors [16][17][18].…”

Section: = E× Er A/dmentioning

confidence: 99%

Active Carbon-Based Electrode Materials from Petroleum Waste for Supercapacitors

Albaiz

Alsaidan

Alzahrani

et al. 2022

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A supercapacitor is an energy-storage device able to store and release energy at fast rates with an extended cycle life; thus, it is used in various electrical appliances. Carbon materials prepared above 800 °C of activation temperatures are generally employed as an electrode material for supercapacitors. Herein, we report carbon materials prepared from a low-cost petroleum waste carbon precursor that was activated using KOH, MgO, and Ca(OH)2 only at 400 °C. Electrode materials using low-temperature activated carbons were prepared with commercial ink as a binder. The cyclic voltammetry and galvanostatic charge–discharge were employed for the electrochemical performance of the electrodes, and studied in a 3-electrode system in 1 M solutions of potassium nitrate (KNO3) as electrolyte; in addition, the supercapacitive performance was identified in a potential window range of 0.0–1.0 V. The best-performance activated carbon derived from vacuum residue with a specific surface area of 1250.6 m2/g exhibited a specific capacitance of 91.91 F/g.

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A facile synthesis strategy of fungi-derived porous carbon-based iron oxides composite for asymmetric supercapacitors

Cited by 12 publications

References 40 publications

Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Microcubes of ZnSe–SnSe₂ Encapsulated within Graphene for High-Performance Asymmetric Supercapacitors

Active Carbon-Based Electrode Materials from Petroleum Waste for Supercapacitors

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A facile synthesis strategy of fungi-derived porous carbon-based iron oxides composite for asymmetric supercapacitors

Cited by 12 publications

References 40 publications

Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Microstructure, electrical, optical and electrochemical characteristics of silver phosphate glasses cathode for magnesium battery applications

Microcubes of ZnSe–SnSe2 Encapsulated within Graphene for High-Performance Asymmetric Supercapacitors

Active Carbon-Based Electrode Materials from Petroleum Waste for Supercapacitors

Contact Info

Product

Resources

About

Microcubes of ZnSe–SnSe₂ Encapsulated within Graphene for High-Performance Asymmetric Supercapacitors