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- Title
Facile Synthesis of Microstrip-Like Copper Phosphate Hydroxide Thin Films for Supercapacitor Applications.
- Authors
Pujari, Sachin S.; Kadam, Sujit A.; Ma, Yuan-Ron; Katkar, Pranav K.; Marje, Supriya J.; Khalate, Suraj A.; Lokhande, Abhishek C.; Patil, Umakant M.
- Abstract
Binder-free copper phosphate hydroxide [Cu2(PO4)(OH)] thin films have been prepared on stainless-steel (SS) substrates at 393 K via a facile hydrothermal method. X-ray diffraction analysis confirmed the formation of orthorhombic-structured copper phosphate hydroxide [Cu2(PO4)(OH)] thin films with uniform microstrip-like morphology and Brunauer–Emmett–Teller (BET) surface area of 5.26 m2 g−1. The electrochemical performance of the films depended on their thickness, with a maximum specific capacitance of 280 F g−1 at a scan rate 5 mV s−1 in 1 M KOH electrolyte. The [Cu2(PO4)(OH)] electrode delivered an energy density of 3.85 Wh kg−1 and a power density of 264.70 W kg−1 with excellent (91%) capacitive retention after 2000 cycles. This excellent electrochemical performance shows that such microstrip-like Cu2(PO4)(OH) thin films are promising electrodes for high-performance supercapacitors.
- Subjects
THIN films; HYDROXIDES; POWER density; ENERGY density; PHOSPHATES; SUPERCAPACITOR electrodes
- Publication
Journal of Electronic Materials, 2020, Vol 49, Issue 6, p3890
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-020-08095-w