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Achieving copper sulfide leaf like nanostructure electrode for high performance supercapacitor and quantum-dot sensitized solar cells
- Source :
- Applied Surface Science. 435:666-675
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Copper sulfide is an important multifunctional semiconductor that has attracted considerable attention owing to its outstanding properties and multiple applications, such as energy storage and electrochemical energy conversion. This paper describes a cost-effective and simple low-temperature solution approach to the preparation of copper sulfide for supercapacitors (SCs) and quantum-dot sensitized solar cells (QDSSCs). X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy confirmed that the nickel foam with a coriander leaf like nanostructure had been coated successfully with copper sulfide. As an electrode material for SCs, the CC-3 h showed excellent specific capacitance (5029.28 at 4 A g−1), energy density (169.73 W h kg−1), and superior cycling durability with 107% retention after 2000 cycles. Interestingly, the QDSSCs equipped with CC-2 h and CC-3 h counter electrodes (CEs) exhibited a maximum power conversion efficiency of 2.52% and 3.48%, respectively. The improved performance of the CC-3 h electrode was attributed mainly to the large surface area (which could contribute sufficient electroactive species), good conductivity, and high electrocatalytic activity. Overall, this work delivers novel insights into the use of copper sulfide and offers an important guidelines for the fabrication of next level energy storage and conversion devices.
- Subjects :
- Supercapacitor
Auxiliary electrode
Materials science
Energy conversion efficiency
General Physics and Astronomy
Nanotechnology
02 engineering and technology
Surfaces and Interfaces
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Electrochemical energy conversion
Energy storage
0104 chemical sciences
Surfaces, Coatings and Films
Copper sulfide
chemistry.chemical_compound
chemistry
Quantum dot
Electrode
0210 nano-technology
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 435
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi...........1d3296c4aec41ae388c8388a7281c6f5