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Facile Synthesis of Microstrip-Like Copper Phosphate Hydroxide Thin Films for Supercapacitor Applications

  • Sachin S. Pujari
  • , Sujit A. Kadam
  • , Yuan Ron Ma
  • , Pranav K. Katkar
  • , Supriya J. Marje
  • , Suraj A. Khalate
  • , Abhishek C. Lokhande
  • , Umakant M. Patil

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

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. Graphic Abstract: [Figure not available: see fulltext.].

Original languageBritish English
Pages (from-to)3890-3901
Number of pages12
JournalJournal of Electronic Materials
Volume49
Issue number6
DOIs
StatePublished - 1 Jun 2020

Keywords

  • Copper phosphate hydroxide
  • hydrothermal method
  • microstrip
  • supercapacitor
  • thin film

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