Electrodeposited molybdenum-tungsten oxide thin films decorated with cobalt phthalocyanine-reduced graphene oxide composites as functional capacitance materials for asymmetric supercapacitors

Budak O., Ozturk N., KOCA A.

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, cilt.188, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 188
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.mssp.2024.109254
  • Dergi Adı: MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex
  • Acıbadem Mehmet Ali Aydınlar Üniversitesi Adresli: Hayır

Özet

Binder-free modified electrodes of a supercapacitor bearing novel binary molybdenum-tungsten oxides/cobalt phthalocyanine-reduced graphene oxide (Mo0.5W0.5O3@CoPc-rGO) hybrid structures were constructed on Ni foam (NF) substrates with facile two-step electrochemical routes by sequential application of electrodeposition and electropolymerization techniques. The prepared Mo0.5W0.5O3@CoPc-rGO hybrid structures consisted of an rGO based electrochemical double-layer capacitor and a Mo0.5W0.5O3@CoPc based pseudocapacitor. Decoration of electrodeposited MoxW1-xO3 structures with the electropolymerized CoPc and electroreduced rGO sheets enhanced the supercapacitive performances including the specific capacitance and the cycling life of the supercapacitor. The as-prepared Mo0.5W0.5O3@CoPc-rGO hybrid electrode possessed a favorable specific capacitance of 1506.4 F g- 1 at 1.0 A g- 1 and retained 94.6 % of its initial capacitance at 10.0 A g- 1 after 5000 charge-discharge cycles. Furthermore, a Mo0.5W0.5O3@CoPc-rGO//rGO asymmetric supercapacitor achieved an outstanding specific energy of 33.8 Wh kg- 1 at the specific power of 350 W kg- 1. This study demonstrated a facile and effective strategy to prepare the electrodes of supercapacitors by electrodeposition/electropolymerization and proposed a candidate functional composite material that can be used in promising supercapacitor technologies.