Enhanced supercapattery performance of hydrothermally synthesized MoS2/ZnS nanocomposites

Journal of Energy Storage, Год журнала: 2025, Номер 113, С. 115555 - 115555

Опубликована: Янв. 31, 2025

Язык: Английский

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Azopyridine as a Linker Molecule in Polyaniline-Grafted Graphene Oxide Nanocomposite Electrodes for Asymmetric Supercapacitors

ACS Applied Energy Materials, Год журнала: 2023, Номер 6(20), С. 10442 - 10456

Опубликована: Окт. 3, 2023

Electronically conducting polymers (ECPs)/carbon nanomaterial-based polyaniline electrodes have received great interest in the field of supercapacitors due to their high specific capacitance, good electronic conductivity, mechanical strength, chemical and electrochemical stabilities, etc. Among various available ECPs, they much importance excellent performances. Herein, we report a facile synthesis PANI-grafted graphene oxide (GO)-azopyridine (Azo) (PANI/GO-Azo) nanocomposite use it as for fabricating supercapacitors. The azo units present act spacer between PANI GO. interfacial polymerization method is adopted PANI/GO-Azo nanocomposites. electrode exhibits gravimetric capacitance 426 F g–1 at current density 0.25 A 1 M H2SO4 (aqueous) electrolyte. possesses cycling stability more than 5000 cycles with Coulombic efficiency 98.5%. An asymmetric supercapacitor fabricated positive activated carbon negative delivers an energy 12.45 W h kg–1 power 274.9 kg–1. This study proclaims that highly promising next-generation

Язык: Английский

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2D transition metal dichalcogenides for efficient hydrogen generation

Materials Today Sustainability, Год журнала: 2024, Номер 27, С. 100914 - 100914

Опубликована: Июль 10, 2024

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Intermetallic Pd–Y nanoparticles/N-doped carbon nanotubes as multi-active catalysts for oxygen reduction reaction, ethanol oxidation reaction, and zinc–air batteries

Nanoscale, Год журнала: 2024, Номер 16(15), С. 7532 - 7546

Опубликована: Янв. 1, 2024

Intermetallic nanomaterials are unique in terms of their band gap, atomic-level arrangement, and well-defined stoichiometry, which allows them to exhibit significantly enhanced catalytic performance electrochemical applications. However, the preparation durable intermetallic catalysts with a lower content platinum group metals is challenging, while lack control over loss active components limits long-term application due weak interaction between support nanostructure. Here, we have designed alloyed nanoparticles (NPs) PdY on N-doped carbon nanotubes (PdY/NCNTs) as multifunctional catalyst for oxygen reduction reaction (ORR), ethanol oxidation (EOR), zinc-air batteries (ZABs). The strong adhesion through nitrogen ensures anchoring NPs NCNTs, restrains atomic migration sintering during conversion phases. This study confirms that there negligible site leaching owing multiple dative bonds NCNTs NPs. Therefore, this exhibits remarkable activity, resulting mass activity 1317 2902 mA mgPd-1 at jk jf ORR EOR, respectively, remains stable longer period. In addition, PdY/NCNT-containing air cathode-fabricated ZAB achieved higher power density (0.236 W cm-2) compared benchmark Pt/C.

Язык: Английский

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Cu-doped ZnCdS-based photocatalyst for efficient photocatalytic hydrogen production by photothermal assistance

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 61, С. 104970 - 104970

Опубликована: Авг. 14, 2024

In solar energy utilization, photocatalytic hydrogen production has been widely researched. To address issues such as low efficiency of photocatalysts, Cu-doped Zn0.5Cd0.5S composite photocatalysts were prepared using a hydrothermal method for production. The Cu/Zn0.5Cd0.5S photocatalyst was characterized XRD, XPS, SEM, TEM, UV–vis-DRS, fluorescence spectrophotometer, and electrochemical workstation. results indicate that Cu doping alters the crystal band structures Zn0.5Cd0.5S. Hydrogen experiments conducted under xenon lamp irradiation, at 45 °C, highest rate 2.72 1.63 times single room temperature (25 °C), respectively. imparted photothermal effect to experiment, enhancing its efficiency.Cu captured electrons by replacing some Zn, constructing an internal electric field, forming defect levels, which hindered electron-hole recombination. Additionally, ions acted plasma, inducing plasma during production, accelerating conversion thermal energy, thus improving efficiency. This research not only provides but also utilizes it synergistic catalysis.

Язык: Английский

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Boosting green hydrogen production with ZnS@MoS2 2D materials: A structural, electrochemical and photocatalytic analysis

Materials Today Communications, Год журнала: 2024, Номер 41, С. 110175 - 110175

Опубликована: Авг. 23, 2024

Язык: Английский

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Unveiling favorable synergy of tubules-like NiMoSe2 with defect-rich borocarbonitride over graphene or MXene for efficient hydrogen evolution reaction electrocatalysis

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 54, С. 1582 - 1592

Опубликована: Дек. 22, 2023

Язык: Английский

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MWCNT supported CuS/ZrS3 composite: A versatile multifunctional catalyst for Dye-sensitized solar cells, water splitting, and supercapacitors

Electrochimica Acta, Год журнала: 2023, Номер 477, С. 143746 - 143746

Опубликована: Дек. 30, 2023

Язык: Английский

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Advancements in fabrication, polymorph diversity, heterostructure excitation dynamics, and multifunctional applications of leading 2D TMDs

Journal of Industrial and Engineering Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Graphitic Carbon Nitride and Their Derivatives

Springer eBooks, Год журнала: 2024, Номер unknown, С. 1 - 38

Опубликована: Янв. 1, 2024

Язык: Английский

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