Vertically aligned MoSe2-WS2 nanoworms heterojunction towards room temperature NO2 gas sensors

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 407, P. 135481 - 135481

Published: Feb. 12, 2024

Language: Английский

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Pseudocapacitive performance of reactively co-sputtered titanium chromium nitride nanopyramids towards flexible supercapacitor with Li-ion storage

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110866 - 110866

Published: Feb. 19, 2024

Language: Английский

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Pseudocapacitive Storage in Molybdenum Oxynitride Nanostructures Reactively Sputtered on Stainless‐Steel Mesh Towards an All‐Solid‐State Flexible Supercapacitor

Small, Journal Year: 2023, Volume and Issue: 20(20)

Published: Dec. 15, 2023

Abstract Exploiting pseudocapacitance in rationally engineered nanomaterials offers greater energy storage capacities at faster rates. The present research reports a high‐performance Molybdenum Oxynitride (MoON) nanostructured material deposited directly over stainless‐steel mesh (SSM) via reactive magnetron sputtering technique for flexible symmetric supercapacitor (FSSC) application. MoON/SSM electrode manifests remarkable Na + ‐ion pseudocapacitive kinetics, delivering exceptional ≈881.83 F g −1 capacitance, thanks to the synergistically coupled interfaces and junctions between nanostructures of Mo 2 N, MoO , 3 co‐existing phases, resulting enhanced specific surface area, increased electroactive sites, improved ionic electronic conductivity. Employing 3D Bode plots, b ‐value, Dunn's analysis, comprehensive insight into charge‐storage mechanism has been presented, revealing superiority surface‐controlled capacitive kinetics. Utilizing PVA‐Na SO 4 gel electrolyte, assembled all‐solid‐state FSSC (MoON/SSM||MoON/SSM) exhibits impressive cell capacitance 30.7 mF cm −2 (438.59 ) 0.125 mA . Moreover, device outputs superior density 4.26 µWh (60.92 Wh kg high power 2.5 mW (35.71 kW ). flexibility excellent electrochemical cyclability ≈91.94% 10,000 continuous charge–discharge cycles. These intriguing performances combined with lightweight, cost‐effective, industry‐feasible, environmentally sustainable attributes make MoON‐based potential candidate energy‐storage applications electronics.

Language: Английский

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Pseudocapacitive Kinetics in Synergistically Coupled MoS₂–Mo₂N Nanowires with Enhanced Interfaces toward All-Solid-State Flexible Supercapacitors

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(12), P. 14890 - 14901

Published: March 16, 2024

Pseudocapacitive kinetics in rationally engineered nanostructures can deliver higher energy and power densities simultaneously. The present report reveals a high-performance all-solid-state flexible symmetric supercapacitor (FSSC) based on MoS2–Mo2N nanowires deposited directly stainless steel mesh (MoS2–Mo2N/SSM) employing DC reactive magnetron co-sputtering technology. abundance of synergistically coupled interfaces junctions between MoS2 nanosheets Mo2N across the nanocomposite results greater porosity, increased ionic conductivity, superior electrical conductivity. Consequently, FSSC device utilizing poly(vinyl alcohol)-sodium sulfate (PVA-Na2SO4) hydrogel electrolyte renders an outstanding cell capacitance 252.09 F·g–1 (44.12 mF·cm–2) at 0.25 mA·cm–2 high rate performance within wide 1.3 V window. Dunn's b-value analysis significant storage by surface-controlled capacitive pseudocapacitive mechanisms. Remarkably, boosts tremendous density ∼10.36 μWh·cm–2 (59.17 Wh·kg–1), superb ∼6.5 mW·cm–2 (37.14 kW·kg–1), ultrastable long cyclability (∼93.7% after 10,000 galvanostatic charge–discharge cycles), impressive mechanical flexibility 60°, 90°, 120° bending angles.

Language: Английский

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Pseudocapacitance Powered Nickel Molybdenum Nitride Nanocomposite Reactively Cosputtered on Stainless-Steel Mesh toward Advanced Flexible Supercapacitors

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(10), P. 4513 - 4527

Published: May 10, 2024

Ternary transition metal nitrides are emerging pseudocapacitive materials for the development of high-energy-density flexible supercapacitors. The present report demonstrates a facile, scalable, and binderless fabrication unique nickel molybdenum nitride (Ni-Mo-N) nanocomposite directly on stainless-steel mesh (SSM) via reactive magnetron cosputtering technology symmetric supercapacitor (FSSC) application. Benefiting from advanced synergism between multiple integrated phases, ternary Ni-Mo-N/SSM electrode exhibits highly characteristics delivers maximum specific capacitance ∼43.11 mF cm–2 in comparison to pristine Ni3N/SSM (∼2.32 cm–2) Mo2N/SSM (∼34.94 electrodes. An extensive b-value Dunn's investigation reveal dominance surface-limited capacitive mechanisms over diffusion-limited redox processes at Ni-Mo-N nanocomposite. as-assembled FSSC device (Ni-Mo-N/SSM||Ni-Mo-N/SSM) attains an impressive cell ∼37.89 (or 229.64 F g–1) 0.15 mA together with remarkable cycling performance, retaining ∼95.12% after 10,000 continuous galvanostatic charge–discharge (GCD) cycles. Moreover, renders superior combination high energy, ∼4.26 μWh 25.83 Wh kg–1), power density, ∼1.07 mW 6.50 kW while displaying state-of-the-art stable flexibility, maintaining ∼95.3% ∼94.5% 1500 GCD cycles +90 −90° bending angles, respectively. Therefore, current strategy reactively presents promising avenue developing ultrastable

Language: Английский

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Ti–Cr–N Nanopyramid/Nitrogen-Doped Carbon Quantum Dot/Stainless Steel Mesh as a Flexible Supercapacitor Electrode

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(7), P. 7663 - 7673

Published: March 20, 2024

Nitrogen-doped carbon quantum dots (N-CQDs) incorporated into highly conductive transition metal nitrides offer enhanced electrochemical performance, delivering a high energy density and outstanding stability. The present study reports high-performance supercapacitor electrode consisting of electrophoretic anchored zero-dimensional N-CQDs with reactively cosputtered titanium chromium nitride nanopyramid (Ti–Cr–N) thin films on flexible stainless-steel mesh (SSM) substrates. nanopyramids N-CQDs/Ti–Cr–N remarkable performance through Li+ storage, ascribed to the abundant electroactive sites synergism between specific surface area higher conductivity Ti–Cr–N. Subsequently, N-CQDs/Ti–Cr–N/SSM in 1 M Li2SO4 aqueous electrolyte exhibits an excellent gravimetric capacitance 393.8 F·g–1 at current 0.32 A·g–1. Further, heterostructure outperforms other multicationic-based supercapacitors maximum 41.41 Wh·kg–1 superior power 7.0 kW·kg–1. Impressive stability ∼88.6% is retained by even after 5000 continuous charge–discharge cycles. Insights charge storage mechanisms highlight dominance surface-limited capacitive pseudocapacitive kinetics, fewer contributions from diffusion-controlled faradaic processes. Furthermore, exemplary mechanical ∼99.98% over 1200 bending cycles demonstrates heterojunction's resilient structural strength, validating potential for application.

Language: Английский

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Synthesis of mesoporous Zn-doped MnCo2O4 nanoparticles for high-energy density solid-state asymmetric supercapacitor

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 73, P. 109229 - 109229

Published: Oct. 13, 2023

Language: Английский

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Enhancing Capacitive Performance of MoS2 through Fe Doping: Synthesis, Characterization, and Electrochemical Evaluation for Supercapacitor Applications

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 52, P. 104814 - 104814

Published: July 20, 2024

Language: Английский

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Rational Engineering and Synthesis of Pyrene and Thiazolo[5,4-d]thiazole -Functionalized Conjugated Microporous Polymers for Efficient Supercapacitor Energy Storage

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(44), P. 30508 - 30521

Published: Jan. 1, 2024

The Py-Th-TzTz CMP was synthesized through a Schiff base reaction and exhibited decomposition temperature ( T d10 ) of 352 °C. In three-electrode system, it demonstrated specific capacitance 652 F g −1 .

Language: Английский

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2D-based electrode materials for supercapacitors – status, challenges, and prospects

RSC Advances, Journal Year: 2024, Volume and Issue: 14(45), P. 32958 - 32977

Published: Jan. 1, 2024

To address the inherent challenges such as restacking, limited ion-accessibility, scalability, stability, and intricate balance between surface area conductivity, this article delves into emerging strategies prospects.

Language: Английский

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