Biomimetic [AV-Er2O3-doped δ-Bi2O3]-stacked nanoplates: an efficient electrocatalyst for OER/HER and electrode material for supercapacitor application

Azhar, Sundus; Ahmad, Khuram Shahzad; Abrahams, Isaac; Jaffri, Shaan Bibi; Ingsel, Tenzin; Gupta, Ram K.; Ali, Daoud

doi:10.1007/s11581-023-05002-1

Cited by 19 publications

(2 citation statements)

References 70 publications

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“…In comparison to the chemical or physics, greener synthesis is marked by sustainability and eco‐friendliness because the resources used are replenishable and non‐toxic. [ 49 ] In comparison, chemical and physical synthetic routes are dependent upon the use of toxic chemicals in addition to complex operational requirements. However, one disadvantage associated with the greener synthesis is the residual carbon source that usually remains in the sample.…”

Section: Resultsmentioning

confidence: 99%

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Jaffri,

Ahmad,

Abrahams

et al. 2024

Energy Tech

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Development of the sustainable materials for consolidation of the energy sustainability needs special emphasis in the current era of the increasing energy demand. In compliance with this, present investigation reports first investigation on the amended sustainable production conjugated with the microwave process of the strontium oxide (SrO) and zinc oxid (ZnO) forming SrO–ZnO nanoscale heterostructure. The band gap of the prepared green nanomaterial was tuned reducing it from 5.8 to 3.6 eV upon the formation of the nanocomposite. With the mixed cubic and hexagonal phase, these particles have average crystallite size of 66.4 nm and irregular shape. The electro‐catalytic assays have expressed the bifunctional role of the SrO–ZnO towards generation of the oxygen and hydrogen. However, it has an excellent hydrogen production capacity with the lower overpotential of 126 mV and Tafel slopes 123.6 mV dec−1. In addition, this nanomaterial has also exhibited superior electrochemical charge storage for batter applications with the unit capacity of 541.7 mAH g−1 and Rs = 0.4 Ω, reflecting facilitated diffusion at the interface. In terms of photovoltaic applications, SrO–ZnO nanocomposite has effectively passivated the perovskite solar cells by improving efficiency from 7.2% to 15.1%. Such an improved performance is associated with the chemical synergism.

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Section: Resultsmentioning

confidence: 99%

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Jaffri,

Ahmad,

Abrahams

et al. 2024

Energy Tech

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“…The sample collection of A. viridis plant leaves and preparation of the precursor solution have been discussed in detail in our previous studies. [50][51][52] Synthesis of Bi 2 O 3 -Sb 2 O 3 was carried out by preparing 20 mm solutions of antimony(III) acetate (C 6 H 9 O 6 Sb) and bismuth(III) acetate separately in DI. Both solutions were subjected to magnetic stirring for 30-40 min at a speed of 500 rpm.…”

Section: Synthesis Procedures Of Bi 2 O 3 -Sb 2 O 3 Nanocompositesmentioning

confidence: 99%

Environmentally benign synthesis and characterization of Bi₂O₃‐Sb₂O₃ nanocomposite: Investigation of its potential as electrode material in energy storage and generation applications

Azhar,

Ahmad,

Abrahams

et al. 2024

Applied Organom Chemis

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A shift to alternate energy sources is needed at the present time to address rising environmental concerns. The current research work aims to use a chemical‐free and green route to synthesize nanocomposite for their application as an electrode in the generation as well as storage of energy. Subsequently, the green synthesis of Bi2O3‐Sb2O3 nanocomposite was carried out using the leaf extract of Amaranthus viridis. The synthesized nanocomposite revealed a well‐arranged pattern of spherical nanoparticles with a crystal size of 29.43 nm and a band gap value of 2.5 eV. The hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) potentials of Bi2O3‐Sb2O3 were studied through linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS), whereas the energy storage studies were performed using cyclic voltammetry (CV) and galvanostatic charge discharge (GCD) techniques. The synthesized nanomaterial showed promising results for HER with an overpotential value of 205 mV as compared with OER, where an overpotential value of 450 mV was observed. However, excellent cyclic stability was witnessed for both reactions up to 1000 cycles. CV studies revealed an outstanding capacitance value of 348 F/g at a scan rate of 2 mV/s, whereas a specific capacitance of 269.5 F/g at a current density of 0.5 A/g was observed using GCD. The 15 h of electrode stability further endorsed the potential of synthesized material for energy‐based applications.

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Enhancing the Electrochemical Performance of Ternary Metallic Phosphates for High‐Energy and Anti‐Self‐Discharge Supercapacitors through Binder Optimization

et al. 2023

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Supercapacitors have proven themselves as a subject of interest over the years for energy storage. As a result, it is not surprising that significant effort has been put into supercapacitor research. However, a device with all desirable properties still needs to be developed, requiring special attention. A simple synthesis of porous magnesium niobium silver phosphate (Mg3Nb1−xAgx(PO4)3) nanocomposites is presented using a novel mixed solvent solution and a hydrothermal method. The MgNbAgPO4 anode with an interconnected porous structure not only offers a large number of active sites for divalent ion trapping but also improves charge transfer kinetics. As a result, the Mg3Nb1−xAgx(PO4)3 anode has a high specific capacity of 958 C g−1 using a binder‐free electrode and better rate capability. The full‐cell design is also built with Mg3Nb1−xAgx(PO4)3 and activated carbon (AC). The hierarchical pore structure and appropriate functional groups Mg3Nb1−xAgx(PO4)3 anode deliver a maximum energy density of 57 Wh kg−1, a high power density of 1200 kW kg−1, and anti‐self‐discharge solid behavior. The analysis of the charge storage mechanism suggests that Mg3Nb1−xAgx(PO4)3//AC supercapattery involves adsorption/desorption and Faradic reactions to store charge. This study opens the path for high‐performance Mg3Nb1−xAgx(PO4)3 electrode and gives a better knowledge of charge storage.

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Biomimetic [AV-Er2O3-doped δ-Bi2O3]-stacked nanoplates: an efficient electrocatalyst for OER/HER and electrode material for supercapacitor application

Cited by 19 publications

References 70 publications

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Environmentally benign synthesis and characterization of Bi₂O₃‐Sb₂O₃ nanocomposite: Investigation of its potential as electrode material in energy storage and generation applications

Enhancing the Electrochemical Performance of Ternary Metallic Phosphates for High‐Energy and Anti‐Self‐Discharge Supercapacitors through Binder Optimization

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Biomimetic [AV-Er2O3-doped δ-Bi2O3]-stacked nanoplates: an efficient electrocatalyst for OER/HER and electrode material for supercapacitor application

Cited by 19 publications

References 70 publications

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Environmentally benign synthesis and characterization of Bi2O3‐Sb2O3 nanocomposite: Investigation of its potential as electrode material in energy storage and generation applications

Enhancing the Electrochemical Performance of Ternary Metallic Phosphates for High‐Energy and Anti‐Self‐Discharge Supercapacitors through Binder Optimization

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Environmentally benign synthesis and characterization of Bi₂O₃‐Sb₂O₃ nanocomposite: Investigation of its potential as electrode material in energy storage and generation applications