Ni<sub>3</sub>Se<sub>4</sub> Nanostructure as a Battery‐type Positive Electrode for Hybrid Capacitors
نویسندگان
چکیده
Abstract Battery‐type supercapacitors have drawn significant attention due to their high charge storage ability resulted from the combined surface and intercalation redox phenomenon. In this regard, nickel chalcogenides are expected deliver specific capacity accompanied by dominant battery‐type supercapacitor features. Herein, we developed a facile one step solvothermal route prepare pure phase Ni 3 Se 4 nanostructures attempted understand synthetic factors such as solvent Ni/Se ratio on formation of phase. The obtained were subjected performance evaluation loading them onto carbon paper found that electrode materials able store through process (battery‐type mechanism). Among them, (NS‐15E(1)) synthesized in water/ethanol (2 : 3) mixture with (1 1) has displayed 376 C g −1 (104 mA hg ) at current density 1 A 2 m KOH. superior NS‐15E(1) could be attributed improved facilitated easier diffusion electrolyte ions into bulk material. Furthermore, hybrid device fabricated using Activated charcoal (AC) negative positive electrodes, respectively showed an extended voltage window 1.6 V achieved energy ∼20 Wh Kg power 329 W kg .
منابع مشابه
Two-Dimensional Vanadium Carbide (MXene) as Positive Electrode for Sodium-Ion Capacitors.
Ion capacitors store energy through intercalation of cations into an electrode at a faster rate than in batteries and within a larger potential window. These devices reach a higher energy density compared to electrochemical double layer capacitor. Li-ion capacitors are already produced commercially, but the development of Na-ion capacitors is hindered by lack of materials that would allow fast ...
متن کاملFacile synthesis of pyrite (FeS2/C) nanoparticles as an electrode material for non-aqueous hybrid electrochemical capacitors.
Pyrite (FeS2) is a promising electrode material for lithium ion batteries (LIBs) because of its high natural availability, low toxicity, cost-effectiveness, high theoretical capacity (894 mA h g-1) and high theoretical specific energy density (1270 W h kg-1, 4e-/FeS2). Nevertheless, the use of FeS2 in electrochemical capacitors was restricted due to fast capacity fading as a result of polysulfi...
متن کاملFailures in Base Metal Electrode (BME) Capacitors
A new failure mechanism has been discovered for today’s latest high volumetric efficiency multilayer chip capacitors. Over the past couple of years, the drive for lower costs has been promoted by the replacement of silver palladium electrodes by nickel. Diligent qualification procedures predicted very long life. However, experience has uncovered an Achilles heel. The capacitors fail when expose...
متن کاملSuperelastic Graphene Aerogel/Poly(3,4-Ethylenedioxythiophene)/MnO2 Composite as Compression-Tolerant Electrode for Electrochemical Capacitors
Ultra-compressible electrodes with high electrochemical performance, reversible compressibility and extreme durability are in high demand in compression-tolerant energy storage devices. Herein, an ultra-compressible ternary composite was synthesized by successively electrodepositing poly(3,4-ethylenedioxythiophene) (PEDOT) and MnO2 into the superelastic graphene aerogel (SEGA). In SEGA/PEDOT/Mn...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ChemElectroChem
سال: 2022
ISSN: ['2196-0216']
DOI: https://doi.org/10.1002/celc.202201041