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Solution-free self-...
Solution-free self-assembled growth of ordered tricopper phosphide for efficient and stable hybrid supercapacitor
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Chodankar, N. R. (author)
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Shinde, P. A. (author)
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Patil, S. J. (author)
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Hwang, S. -K (author)
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Raju, G. S. R. (author)
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Ranjith, K. S. (author)
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Dubal, D. P. (author)
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Huh, Y. S. (author)
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Han, Y. -K (author)
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- Elsevier B.V. 2021
- 2021
- English.
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In: Energy Storage Materials. - : Elsevier B.V.. - 2405-8289 .- 2405-8297. ; 39, s. 194-202
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- 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. © 2021 Elsevier B.V.
Keyword
- Dry electrode
- Energy efficiency
- Hybrid supercapacitor
- Self-assembly
- Solution free
Publication and Content Type
- ref (subject category)
- art (subject category)
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