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Solution-free self-assembled growth of ordered tricopper phosphide for efficient and stable hybrid supercapacitor
- Source :
- Energy Storage Materials. 39:194-202
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Herein, a solution-free dry strategy for the growth of self-assembled ordered tricopper phosphide (Cu3P) nanorod arrays is developed and the product is employed as a high-energy, stable positive electrode for a solid-state hybrid supercapacitor (HSC). The ordered Cu3P nanorod arrays grown on the copper foam deliver an excellent specific capacity of 664 mA h/g with an energy efficiency of 88% at 6 A/g and an ultra-long cycling stability over 15,000 continuous charge–discharge cycles. These electrochemical features are attributed to the ordered growth of the Cu3P nanorod arrays, which offers a large number of accessible electroactive sites, a reduced number of ion transfer paths, and reversible redox activity. The potential of the Cu3P nanorod arrays is further explored by engineering solid-state HSCs in which the nanorods are paired with an activated carbon-based negative electrode. The constructed cell is shown to convey a specific energy of 76.85 Wh/kg at a specific power of 1,125 W/kg and an 88% capacitance retention over 15,000 cycles. Moreover, the superior energy storing and delivery capacity of the cell is demonstrated by an energy efficiency of around 65%. The versatile solution-free dry strategies developed here pave the way towards engineering a range of electrode materials for next-generation energy storage systems.
- Subjects :
- Supercapacitor
Materials science
Renewable Energy, Sustainability and the Environment
Phosphide
Energy Engineering and Power Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Energy storage
0104 chemical sciences
chemistry.chemical_compound
chemistry
Chemical engineering
Electrode
Specific energy
General Materials Science
Nanorod
Self-assembly
0210 nano-technology
Subjects
Details
- ISSN :
- 24058297
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- Energy Storage Materials
- Accession number :
- edsair.doi...........5e9a77fa33869e85ec5e6042c6ce52a4