Nickel–cobalt hydroxide: a positive electrode for supercapacitor applications

Vidhya, M. Sangeetha; Ravi, G.; Yuvakkumar, R.; Velauthapillai, Dhayalan; Thambidurai, M.; Dang, Cuong; Saravanakumar, B.

doi:10.1039/d0ra01890b

Cited by 95 publications

(32 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the crystallization and morphology of nickel sulfide are primarily tuned by controlling the sulfur source in the reaction. In general, nickel sulfide is synthesized by dissolving metal salts, such as nickel acetate, nitrate, and chloride, and sulfur precursors, such as sodium sulfate, thioacetamide (TAA), thiourea (TU), and sodium thiosulfate, in solution [28][29][30][31][32][33][34]. Chen et al used Ni(NO 3 ) 2 •6H 2 O and TU to directly prepare Ni 3 S 2 on Ni foam (NF) [35], and Wu et al used TAA and NF to prepare rod-like Ni 3 S 2 [36].…”

Section: Introductionmentioning

confidence: 99%

Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

et al. 2021

View full text Add to dashboard Cite

Ni3S2 nanowires were synthesized in situ using a one-pot hydrothermal reaction on Ni foam (NF) for use in supercapacitors as a positive electrode, and various contents (0.3−0.6 mmol) of Co(OH)2 shells were coated onto the surfaces of the Ni3S2 nanowire cores to improve the electrochemical properties. The Ni3S2 nanowires were uniformly formed on the smooth NF surface, and the Co(OH)2 shell was formed on the Ni3S2 nanowire surface. By direct NF participation as a reactant without adding any other Ni source, Ni3S2 was formed more closely to the NF surface, and the Co(OH)2 shell suppressed the loss of active material during charging–discharging, yielding excellent electrochemical properties. The Co(OH)2–Ni3S2/Ni electrode produced using 0.5 mmol Co(OH)2 (Co0.5–Ni3S2/Ni) exhibited a high specific capacitance of 1837 F g−1 (16.07 F cm−2) at a current density of 5 mA cm−2, and maintained a capacitance of 583 F g−1 (16.07 F cm−2) at a much higher current density of 50 mA cm−2. An asymmetric supercapacitor (ASC) with Co(OH)2–Ni3S2 and active carbon displayed a high-power density of 1036 kW kg−1 at an energy density of 43 W h kg−1 with good cycling stability, indicating its suitability for use in energy storage applications. Thus, the newly developed core–shell structure, Co(OH)2–Ni3S2, was shown to be efficient at improving the electrochemical performance.

show abstract

Section: Introductionmentioning

confidence: 99%

Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

et al. 2021

View full text Add to dashboard Cite

show abstract

“…They found that the mixed metal hydroxide had better capacitance than bare Ni(OH) 2 due to the presence of Co and exhibited excellent retention of 96.26% up to 2000 cycles. 132 A binary transition metal oxide based on zinc and iron was mixed with reduced graphene oxide, leading to an improved ZnFe 2 O 4 -rGO nanohybrid structure that was studied by Askari et al The ZnFe 2 O 4 -rGO electrodes yielded a capacitance of 1419 F g −1 with 93% cyclic stability after 5000 charge/discharge cycles, making them an opportune candidate for supercapacitor electrodes. 133 Cheng et al reported a core− shell-structured metal hydroxide on CNT synthesized by a chemical method for high-performance supercapacitor electrodes.…”

Section: ■ Choice Of Electrode Materialsmentioning

confidence: 99%

Emergence of Novel 2D Materials for High-Performance Supercapacitor Electrode Applications: A Brief Review

et al. 2021

View full text Add to dashboard Cite

Energy storage and production is one of the significant issues of the 21st century, motivating the search for new materials for energy storage devices. Supercapacitors (SCs) play a prominent role among the class of energy storage devices and conversion systems since they provide greater specific capacitance, high power density, longer life span, fast charge–discharge rate, excellent circulation feature, low cost, and are safe to use. The selection of electrode material has great importance in the performance of the supercapacitor. Two-dimensional (2D) layered nanomaterials gained much interest in the fabrication of electrode materials due to their unique physicochemical properties. The current review explores the synthesis and application of novel 2D materials, such as graphene, MXene, transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN), carbon nitrides, metal oxides/hydroxides, and black phosphorus (BP), as supercapacitor electrodes in detail.

show abstract

“…The first mechanism is based on the surface adsorption of electrolyte cations (Na ? ) on Fe(OH) 2 @Cd(OH) 2 [29,30]: The second one involves the intercalation of alkali metal cations Na ? .…”

Section: Electrochemical Supercapacitive Performancementioning

confidence: 99%

Web-analogues one-dimensional iron hydroxide@cadmium hydroxide nanostructure: electrochemical supercapacitor

Patil

Raut²,

Pandit

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

One-dimensional iron hydroxide@cadmium hydroxide nanostructures have been prepared by sequentially converting cadmium hydroxide into iron hydroxide via simple and cost-effective cation exchange reaction based on solubility product to design electrochemical supercapacitive electrode. Surface architecture of iron hydroxide@cadmium hydroxide nanostructures in the form of core-shell enables easy and effective electrochemical reactions which have been studied via electrochemical cyclic voltammetry and charge-discharge studies. Interestingly, iron hydroxide@cadmium hydroxide electrode exhibits specific capacitance of 368 F g -1 at current density of 0.5 A g -1 along with electrochemical impedance analysis. Capacitance retention performed at the scan rate of 50 mV s -1 for 5000 cycles results in 52% capacity of its initial.

show abstract

Nickel–cobalt hydroxide: a positive electrode for supercapacitor applications

Abstract: So far, numerous metal oxides and metal hydroxides have been reported as an electrode material, a critical component in supercapacitors that determines the operation window of the capacitor.

Cited by 95 publications

References 44 publications

Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

Facile In Situ Synthesis of Co(OH)2–Ni3S2 Nanowires on Ni Foam for Use in High-Energy-Density Supercapacitors

Emergence of Novel 2D Materials for High-Performance Supercapacitor Electrode Applications: A Brief Review

Web-analogues one-dimensional iron hydroxide@cadmium hydroxide nanostructure: electrochemical supercapacitor

Contact Info

Product

Resources

About