Q1 Research Application · Frontier Focus

Construction of hydrangea-like nickel cobalt sulfide through efficient microwave-assisted approach for remarkable supercapacitors

This Applied Surface Science paper (2020) is indexed as a Xianghu equipment application case for XH-200A / XH-200C; key results include High energy density 48.8 Wh kg-1, Retention 71.9%, Retention 98.7%, and Specific capacity 226.5 mAh g-1.

View DOI Back to Library Chinese Solution
Paper ID 350
Application Focus Supercapacitor electrode materials, Rapid microwave synthesis, Hierarchical nickel-cobalt sulfide structures, Growth-mechanism analysis
Key Result Specific capacity 226.5 mAh g-1
Core Condition Temperature 90 °C
Paper ID
350
Journal
Applied Surface Science
Impact Factor
6.707
CAS Zone
Zone 1
Year
2020
DOI
10.1016/j.apsusc.2020.148260
Equipment Model
XH-200A / XH-200C
Affiliations
Shenzhen University
Research Directions
Supercapacitor electrode materials Rapid microwave synthesis Hierarchical nickel-cobalt sulfide structures Growth-mechanism analysis

Fact Snapshot

  • Paper: Construction of hydrangea-like nickel cobalt sulfide through efficient microwave-assisted approach for remarkable supercapacitors
  • Equipment: XH-200A / XH-200C
  • Source: Applied Surface Science, 2020
  • Research direction: supercapacitor electrode materials, rapid microwave synthesis, hierarchical nickel-cobalt sulfide structures, and growth-mechanism analysis
  • Core conditions: Temperature 90 °C and Time 240 min / 20 min
  • Key results: High energy density 48.8 Wh kg-1, Retention 71.9%, Retention 98.7%, and Specific capacity 226.5 mAh g-1

Research Abstract

Construction of hydrangea-like nickel cobalt sulfide through efficient microwave-assisted approach for remarkable supercapacitors was published in Applied Surface Science (2020) and is indexed as a Xianghu Q1 application case for XH-200A / XH-200C. The source record connects it with supercapacitor electrode materials, rapid microwave synthesis, hierarchical nickel-cobalt sulfide structures, and growth-mechanism analysis. Core operating conditions include Temperature 90 °C and Time 240 min / 20 min. Key reported results include High energy density 48.8 Wh kg-1, Retention 71.9%, Retention 98.7%, and Specific capacity 226.5 mAh g-1.

Research Background and Problem

The application context is supercapacitor electrode materials, rapid microwave synthesis, hierarchical nickel-cobalt sulfide structures, and growth-mechanism analysis. The equipment metadata identifies XH-200A / XH-200C, while the publication metadata records Applied Surface Science (2020). The affiliation record includes Shenzhen University. The recorded DOI is 10.1016/j.apsusc.2020.148260.

Equipment Use and Experimental Conditions

ItemParameter
Temperature90 °C
Time240 min / 20 min

Key Result

Specific capacity 226.5 mAh g-1
High energy density 48.8 Wh kg-1
Retention 71.9%
Retention 98.7%
MetricResult
Specific capacity226.5 mAh g-1
High energy density48.8 Wh kg-1
Retention71.9%
Retention98.7%

Evidence Details

Source evidence

Then, as the heating rate of 15 °C min−1, the solution was heated to the temperature of 90 °C for various time (i.e., 1, 5, 20, 60, 240 min).

Abstract evidence

The optimal NCS displays the supreme capacity of 226.5 mAh g−1 at a current density of 1 A g−1, and retains 86.1%, 71.9% capacitance retention as the current density increases to 20, 40 A g−1, respectively.

Source evidence

After 50 k cycles, the concluding capacitance retention of NCS20//AC is 98.7%, evidencing the excellent cycling stability.

Equipment evidence

After fully stirring, they were transferred to microwave reactor (Xianghu, XH-200A) which equipped with reflux coil.

Stability evidence

Stability evidence: source values include 98.7%, 100%.

Source evidence

At a power density of 400 W kg−1, the highest energy density of NCS20//AC is harvested (i.e., 48.8 Wh kg−1).

Additional source evidence

Additional source evidence: source values include 20 mL, 50 mL.

Condition evidence

Time: 240 min / 20 min

Mechanism / Method Highlights

  • The microwave-assisted method delivers rapid and uniform heating, promoting fast precursor nucleation and structural evolution.
  • The NCS20 sample formed at 20 min retains defective nanosheets while assembling into a hierarchical hydrangea-like structure, improving electrolyte penetration and active-site exposure.
  • High porosity and ultrathin nanosheets reduce ion-diffusion resistance and improve rate performance.
  • The hierarchical structure and stable interface help buffer volume changes during long-term charge-discharge cycling.

Application Value

  • NCS20 reaches 226.5 mAh g^-1 at 1 A g^-1 and retains 71.9% at 40 A g^-1.
  • The NCS20//AC device maintains 98.7% retention after 50,000 cycles.
  • Preserves quantitative result evidence: High energy density 48.8 Wh kg-1, Retention 71.9%, Retention 98.7%, and Specific capacity 226.5 mAh g-1.
  • Maintains source-level evidence details: Source evidence: Then, as the heating rate of 15 °C min−1, the solution was heated to the temperature of 90 °C for various time (i.e., 1, 5, 20, 60, 240 min), Abstract evidence: The optimal NCS displays the supreme capacity of 226.5 mAh g−1 at a current density of 1 A g−1, and retains 86.1%, 71.9% capacitance retention as the current density increases to 20, 40 A g−1, respectively, Source evidence: After 50 k cycles, the concluding capacitance retention of NCS20//AC is 98.7%, evidencing the excellent cycling stability, and Equipment evidence: After fully stirring, they were transferred to microwave reactor (Xianghu, XH-200A) which equipped with reflux coil.

Related Equipment

XH-200A+ Microwave Solid-Liquid Phase Synthesis/Extraction System
XH-200A+ Microwave Solid-Liquid Phase Synthesis/Extraction System

FAQ

Which Xianghu instrument is covered by this page?
The structured source records XH-200A / XH-200C for this paper.
What research direction does this page support?
The source tags this paper under supercapacitor electrode materials, rapid microwave synthesis, hierarchical nickel-cobalt sulfide structures, and growth-mechanism analysis.
Which publication does this case come from?
It comes from Applied Surface Science (2020), DOI 10.1016/j.apsusc.2020.148260.
Citation
Construction of hydrangea-like nickel cobalt sulfide through efficient microwave-assisted approach for remarkable supercapacitors
Applied Surface Science, 2020
DOI: 10.1016/j.apsusc.2020.148260