Highly efficient and stable layered AgZnS@WS2 nanocomposite electrode as superior charge transfer and active redox sites for energy harvesting device

Rehman, Asad Ur; Afzal, Amir Muhammad; Iqbal, Muhammad Waqas; Ali, Muhammad; Wabaidur, Saikh Mohammad; Al‐Ammar, Essam A.; Mumtaz, Sohail; Choi, Eun Ha

doi:10.1016/j.est.2023.108022

Cited by 25 publications

(8 citation statements)

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“…Weak humps were observed in the current range of −0.3 V to −0.7 V due to Faraday reactions generated by pyrrole N and pyridine N. Pyrrole N provided additional reversible pseudocapacitance, which gave the electrode excellent electrochemical performance. The constant current charge–discharge curves of the nitrogen-doped porous carbon prepared based on egg yolk/white were triangular ( Figure 5 c,d), but the GCD curves were not strictly symmetric due to the presence of pseudocapacitance [ 44 ]. YPAC-1 had the longest discharge time and the highest specific capacitance among all samples.…”

Section: Resultsmentioning

confidence: 99%

“…The b-value can be used to determine the charge storage behavior, where values between 0 and 0.5 indicate diffusion-controlled behavior, defined as battery-type materials. When the b value is 0.5–1.0, it proves that the electrode material is capacitive, which presents as super capacitance grading material between 0.5–0.8, and a supercapacitor property is displayed at 0.8–1.0 [ 44 ]. As shown in Figure S3 , the b-value of YPAC-1 is 0.77, indicating it possesses both battery and capacitor characteristics.…”

Section: Resultsmentioning

confidence: 99%

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In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

Qin,

Liu,

Wang

et al. 2023

Molecules

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The conversion of nitrogen–oxygen-rich biomass wastes into heteroatomic co-doped nanostructured carbons used as energy storage materials has received widespread attention. In this study, an in situ nitrogen–oxygen co-doped porous carbon was prepared for supercapacitor applications via a two-step method of pre-carbonization and pyrolytic activation using mixed egg yolk/white and rice waste. The optimal sample (YPAC-1) was found to have a 3D honeycomb structure composed of abundant micropores and mesopores with a high specific surface area of 1572.1 m2 g−1, which provided abundant storage space and a wide transport path for electrolyte ions. Notably, the specific capacitance of the constructed three-electrode system was as high as 446.22 F g−1 at a current density of 1 A g−1 and remained above 50% at 10 A g−1. The capacitance retention was 82.26% after up to 10,000 cycles. The symmetrical capacitor based on YPAC-1 with a two-electrode structure exhibited an energy density of 8.3 Wh kg−1 when the power density was 136 W kg−1. These results indicate that porous carbon materials prepared from mixed protein and carbohydrate waste have promising applications in the field of supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

Qin,

Liu,

Wang

et al. 2023

Molecules

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“…Transition metal sulfides have been reported to be electrochemically active materials. Due to their various oxidation states and strong electrical conductivity, some electrochemical properties perform better than other oxides and carbon-based materials [13][14][15]. Because the transition metal sulfides have highly flexible electronic structure, a wide range of potential states, and improved surface area, which increased the electronic conductivity of the materials.…”

Section: Introductionmentioning

confidence: 99%

Designing of high performance MoS₂@VZnS//AC hybrid battery supercapacitor device for the electrochemical energy storage and glucose detection

Imran,

Akhtar,

Muzaffar

et al. 2024

Phys. Scr.

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Due to their high conductive properties and superior specific capacitance, metal sulfides exhibit remarkable electrical conductivity. Transition metal dichalcogenides (TMDs) are regarded ideal options for energy harvesting devices due to their unique 2D arrangement and remarkable electrochemical properties. In this work, the typical exfoliation method (tip sonication method) was used to synthesize the molybdenum disulfide (MoS2). By using the hydrothermal method, the vanadium zinc sulfide is synthesized. The composite was analyzed through SEM, XRD, and XPS techniques to comprehensively investigate its morphological, structural, and compositional characteristics. The MoS2@VZnS electrode achieved a specific capacity (Qs) of 1025 Cg-1 at 3 mVs-1 after being tested in 1 M KOH. In a two-electrode set-up, activated carbon is used as a negative electrode, and MoS2@VZnS is used as a positive electrode for the fabrication of a hybrid supercapacitor. The asymmetric device has demonstrated a Qs of 285.4 Cg-1 at 1.4 Ag-1. The fabricated asymmetric supercapacitor device has manifested an excellent energy density (Ed) of 39.5 Whkg-1 and power density (Pd) of 2462.35 Wkg-1. Furthermore, in the durability test of MoS2@VZnS//AC, it exhibited an impressive capacity retention of 91.32% after enduring 5,000 cycles. Besides this, an investigation was conducted on a glucose electrochemical sensor utilizing MoS2@VZnS, to enhance its performance. The device showed extraordinary performance and large sensitivity against glucose even up to a very high value. The multifunctional MoS2@VZnS nanocomposite electrode material provides new opportunities to design hybrid devices in energy storage devices and biomedical applications.

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“…Two-dimensional (2D) materials like graphene and TMDs family, such as molybdenum disulfide (MoS 2 ) and MXene, have attained a lot of interest and have been used to improve their value in power storage devices [13][14][15][16]. Electrochemical energy storage (EES) devices are essential in electrical and electronic systems due to their outstanding performance and low cost [17,18].…”

Section: Introductionmentioning

confidence: 99%

High-performance and stable CoSrS@rGO nanocomposite based electrode material for supercapattery device and electrochemical glucose sensor

Yasmeen,

Afzal,

Iqbal

et al. 2024

Phys. Scr.

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Two-dimensional (2D) materials have excellent electrical conductivity, notable pore size, and exceptional stability. In this research, the cobalt strontium sulfide (CoSrS) nanocomposite is synthesized using the hydrothermal process. The CoSrS@rGO nanocomposite electrode material showed much greater specific capacity of 1050 C/g compared to the undoped sample (300 C/g), as determined by a three-electrode measuring setup. Moreover, the results obtained from the electrochemical impedance spectroscopy (EIS) and Brunauer-Emmett-Teller (BET) analyses indicated a noticeable enhancement in both surface area and conductivity. Further, the hybrid device (CoSrS@rGO//AC@PANI) showed power and energy densities of 39.5 Wh/kg and 3793 W/kg, respectively. The hybrid device exhibited a retention rate of 70% of its initial capacity over 2000 cycles. Besides, the CoSrS@rGO nanocomposite electrode material was effectively used as an electrode for the electrochemical glucose sensor. The device showed high sensitivity and stability against the glucose. The CoSrS@rGO nanocomposite electrode exhibited a sensitivity with an R2 value of 0.99. This study offers valuable insights into the influence of temperature and conducting polymers on the performance of CoSrS@rGO nanocomposite electrode materials for multiple applications.

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Highly efficient and stable layered AgZnS@WS2 nanocomposite electrode as superior charge transfer and active redox sites for energy harvesting device

Cited by 25 publications

References 1 publication

In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

Designing of high performance MoS₂@VZnS//AC hybrid battery supercapacitor device for the electrochemical energy storage and glucose detection

High-performance and stable CoSrS@rGO nanocomposite based electrode material for supercapattery device and electrochemical glucose sensor

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Highly efficient and stable layered AgZnS@WS2 nanocomposite electrode as superior charge transfer and active redox sites for energy harvesting device

Cited by 25 publications

References 1 publication

In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

In Situ N, O Co-Doped Nanoporous Carbon Derived from Mixed Egg and Rice Waste as Green Supercapacitor

Designing of high performance MoS2@VZnS//AC hybrid battery supercapacitor device for the electrochemical energy storage and glucose detection

High-performance and stable CoSrS@rGO nanocomposite based electrode material for supercapattery device and electrochemical glucose sensor

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Designing of high performance MoS₂@VZnS//AC hybrid battery supercapacitor device for the electrochemical energy storage and glucose detection