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Achieving a High Areal Capacity with a Binder-Free Copper Molybdate Nanocone Array-Based Positive Electrode for Hybrid Supercapacitors
- Source :
- Inorganic Chemistry. 57:8440-8450
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Herein, we develop a binder-free copper molybdate nanocone array with a prism-like morphology on nickel foam (Cu3Mo2O9 NCAs/Ni foam) using a single-step hydrothermal method. With an optimal growth time (10 h) under hydrothermal conditions, the prism-like Cu3Mo2O9 NCAs are uniformly decorated on Ni foam with good adhesion and crystallinity. The prepared Cu3Mo2O9 NCAs/Ni foam has been directly used as a binder-free electrode to examine its suitability as a positive electrode in hybrid supercapacitors. In an aqueous 1 M KOH electrolyte, the binder-free Cu3Mo2O9 NCAs/Ni foam showed battery-type behavior with a high areal capacity of 449.5 μAh cm–2 at a discharge current density of 2 mA cm–2 and also exhibited a good cycling stability. In addition, the pouch-type hybrid supercapacitor is assembled using the prism-like Cu3Mo2O9 NCAs/Ni foam as a positive electrode and the activated carbon as a negative electrode in a 1 M KOH electrolyte. The hybrid supercapacitor achieves a maximum cell potential of 1.6 V with ...
- Subjects :
- Supercapacitor
chemistry.chemical_element
02 engineering and technology
Electrolyte
Molybdate
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Copper
Hydrothermal circulation
0104 chemical sciences
Inorganic Chemistry
chemistry.chemical_compound
Crystallinity
Nickel
chemistry
Chemical engineering
Electrode
Physical and Theoretical Chemistry
0210 nano-technology
Subjects
Details
- ISSN :
- 1520510X and 00201669
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Inorganic Chemistry
- Accession number :
- edsair.doi.dedup.....dcfff9e0ef574bd060b67ee34e3deff4