Synthesis of bimetallic nickel cobalt selenide particles for high-performance hybrid supercapacitors

Jiang, Bei; Liu, Yang; Zhang, Jingchao; Wang, Yinhuan; Zhang, Xinyu; Zhang, Renchun; Huang, Liangliang; Zhang, Daojun

doi:10.1039/d1ra08678b

Cited by 20 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By utilizing their desirable SC and vast voltage range (1.6 V), an energy density as high as 61.40, 52.18, and 45.46 W h/kg for the CoFe 2 Se 4 @NiF//AC@NiF, CoFeP@NiF//AC@NiF, and CoFeS 2 @NiF//AC@NiF devices, respectively, can be attained. However, upon power density increments to 15,999.6, 16,001.48, and 15,991.3 W/kg at 20 A/g for CoFe 2 Se 4 @NiF//AC@NiF, CoFeP@NiF//AC@NiF, and CoFeS 2 @NiF//AC@NiF devices, respectively, these devices still present high energy densities of 44.33, 34.67, and 27.34 W h/kg, which greatly overtake those of other hybrid supercapacitors reported. ,,− …”

Section: Resultsmentioning

confidence: 86%

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Shirvani

Davarani

2023

Energy Fuels

View full text Add to dashboard Cite

The utilization of supercapacitive active bimetallic cobalt-iron selenides/phosphides/sulfides (CoFeX = Se, P, S) as active energy storage materials in supercapacitors still has space for betterment owing to low specific capacity and reduces the electrochemical performance during long-term application. This paper describes a facile and cost-effective strategy to substantially improve the specific capacity and durability of flower-like CoFeX (X = Se, P, S)@NiF by substituting Se, P, and S elements into the cobalt-iron hydroxide precursor, respectively. The CoFe 2 Se 4 @NiF electrode showed better capacitive activity than CoFeP@NiF and CoFeS 2 @NiF electrodes. The CoFe 2 Se 4 @NiF electrode shows remarkable supercapacitive properties with a specific capacity of 338.78 mA h/g (1219.61 C/g) at 1 A/g, a significant rate capability of 83.14% at 20 A/g, and remarkable durability (8.06% capacity decline after 10,000 cycles). Also, the fabricated CoFe 2 Se 4 @ NiF(positive)//AC@NiF(negative) hybrid supercapacitor by utilizing the CoFe 2 Se 4 @NiF as a satisfactory positive electrode and activated carbon on the nickel foam (AC@NiF) as a favorable negative electrode reflected an excellent energy density of 61.40 W h/ kg at 799.85 W/kg and an excellent durability of 94.45% after 10,000 cycles.

show abstract

Section: Resultsmentioning

confidence: 86%

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Shirvani

Davarani

2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…The existence of capacitive contribution can be determined by the following formula i = a v b where ν is the scan rate and i is the peak value at the corresponding scan rate. To better understand the ratio of the capacitive contribution, Formula is introduced i ( v ) = k 1 v + k 2 v 1 / 2 where k 1 v corresponds to capacitance-controlled effects and k 2 v 1/2 can be attributed to diffusion-controlled effects. , …”

Section: Methodsmentioning

confidence: 99%

“…where k 1 v corresponds to capacitance-controlled effects and k 2 v 1/2 can be attributed to diffusion-controlled effects. 57,58 ■ ASSOCIATED CONTENT * sı Supporting Information…”

Section: Assembly Of Flexiblementioning

confidence: 99%

Nanoporous Conducting Polymer Nanowire Network-Encapsulated MnO₂-Based Flexible Supercapacitor with Enhanced Rate Capability and Cycling Stability

Zhang

2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Transition-metal-oxide-based electrochemical electrodes usually suffer from poor electron and ion transport, leading to deteriorated rate performance and cycling stability. Herein, we address these issues by developing a facile "conducting encapsulation" strategy toward a nanoporous PEDOT nanowire/MnO 2 nanoparticle/PEDOT nanowire composite electrode. Through encapsulation of the PEDOT nanowire network, the overall electrochemical performance of the resultant composite electrode is substantially enhanced. Specifically, the rate capability and capacitance retention are improved by ∼48.2 and ∼33%, respectively, which are 89.8% at 0.8−40 mA/cm 2 and 93% after 3000 charge/discharge cycles at 2.0 mA/cm 2 , respectively. Moreover, the specific capacitance is increased by ∼6 times of that of the MnO 2 @PEDOT NW electrode at ∼200 mA/cm 2 . We find that a nanoporous conducting nanowire network that encapsulates a MnO 2 nanoparticle layer can provide efficient electron and ion transport paths and stabilize the structure of MnO 2 from collapse during charge/discharge cycling and mechanical deformation. This strategy can be applied to other pseudocapacitive material-based electrochemical electrodes, such as transition-metal oxides and conducting polymers.

show abstract

“…Cuihua An et al [20] summarised the progress and perspectives of metal oxide-based supercapacitors. T. Elango Balaji et al [21] reviewed and highlighted the recent progress in the realm of bimetallic transition metal oxides focusing their electrochemical properties in supercapacitor applications.…”

Section: Introductionmentioning

confidence: 99%

Scouting the supercapacitor performance of bimetallic transition metal co-doped carbon quantum dots (CQDs) Polyvinyl alcohol (PVA) composites as green electrode materials.

Daniel,

M.G,

E.M

2024

Preprint

View full text Add to dashboard Cite

Carbon quantum dots (CQDs) have emerged as an excellent and fantastic material among nanomaterials especially in the fabrication of green electrode materials in supercapacitors. The energy storage performance and cyclic stability together with the integration of transition metals enhances its applications in the arena of energy conversion and storage. The present work highlights the fabrication of bimetallic transition metal co-doped CQDs and its composites with Polyvinyl alcohol (PVA), its analytical characterization and the investigation on the electrochemical performances of these composites by Cyclic Voltametric (CV) studies. Co doping of first row transition elements with CQDs were found to enhance the supercapacitor performance by several folds and among the first row transition metals, Mn2+ was found to be superior over others and in the present work, we have synthesized a series of bimetallic transition metal co-doped CQDS by fixing Mn2+ as one of the transition metal ion and the combinations of Mn2+ - Fe2+, Mn2+-Co2+,Mn2+- Ni2+,Mn2+-Cu2+ and Mn2+Zn2+ ions. The formation of bimetallic CQDs were confirmed from the UV- Visible spectral analysis, EDS analysis, fluorescence measurements and the SEM analysis. The high-resolution TEM images reveal that the bimetallic co-doped CQDs were homogeneously distributed and are almost found to be hexagonal in shape possessing a size range of less than 20 nm. The surface area, pore volume and the pore diameter of the composite materials were found to be in the range of (81x10− 2-92 x10− 2) m2/g to (198x10− 3 -202x10− 3) cm3/g and (7.83–8.89) nm respectively. The capacitance value of the bimetallic transition metal co-doped CQDs were found to be in the range of (171–480) µF/cm2, which is found to be enhanced by 200-fold in comparison to single transition metal CQDs and these materials will find wide application towards the fabrication of green electrode materials in near future.

show abstract

Synthesis of bimetallic nickel cobalt selenide particles for high-performance hybrid supercapacitors

Abstract: The litchi-like Ni–Co selenide constructed Ni0.95Co2.05Se4//AC hybrid supercapacitor achieves an energy density of 37.22 W h kg−1 and a power density of 800.90 W kg−1. The ASC device can retain 95.21% of the original capacity after 4000 cycles.

Cited by 20 publications

References 45 publications

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Nanoporous Conducting Polymer Nanowire Network-Encapsulated MnO₂-Based Flexible Supercapacitor with Enhanced Rate Capability and Cycling Stability

Scouting the supercapacitor performance of bimetallic transition metal co-doped carbon quantum dots (CQDs) Polyvinyl alcohol (PVA) composites as green electrode materials.

Contact Info

Product

Resources

About

Synthesis of bimetallic nickel cobalt selenide particles for high-performance hybrid supercapacitors

Abstract: The litchi-like Ni–Co selenide constructed Ni0.95Co2.05Se4//AC hybrid supercapacitor achieves an energy density of 37.22 W h kg−1 and a power density of 800.90 W kg−1. The ASC device can retain 95.21% of the original capacity after 4000 cycles.

Cited by 20 publications

References 45 publications

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Designing of the CoFeX (X= Se, P, S) Flower-like Structures on Nickel Foam as Efficient Positive Electrodes for a High-Performance Hybrid Supercapacitor

Nanoporous Conducting Polymer Nanowire Network-Encapsulated MnO2-Based Flexible Supercapacitor with Enhanced Rate Capability and Cycling Stability

Scouting the supercapacitor performance of bimetallic transition metal co-doped carbon quantum dots (CQDs) Polyvinyl alcohol (PVA) composites as green electrode materials.

Contact Info

Product

Resources

About

Nanoporous Conducting Polymer Nanowire Network-Encapsulated MnO₂-Based Flexible Supercapacitor with Enhanced Rate Capability and Cycling Stability