In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors
Abstract In this work, a simple, single-step electrochemical method is used to decorate a ternary Polypyrrole-Cu2O-MoO3 (PPy-Cu2O-MoO3) nanocomposite on Graphene Oxide (GO) nanosheets formed on a Graphite Foil Electrode (GFE). The characterization confirmed successful synthesis of ternary nanocompos...
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Nature Portfolio
2025-08-01
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| Online Access: | https://doi.org/10.1038/s41598-025-17069-z |
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| author | Reza Dadashi Morteza Bahram Khalil Farhadi |
| author_facet | Reza Dadashi Morteza Bahram Khalil Farhadi |
| author_sort | Reza Dadashi |
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| description | Abstract In this work, a simple, single-step electrochemical method is used to decorate a ternary Polypyrrole-Cu2O-MoO3 (PPy-Cu2O-MoO3) nanocomposite on Graphene Oxide (GO) nanosheets formed on a Graphite Foil Electrode (GFE). The characterization confirmed successful synthesis of ternary nanocomposite, and electrochemical tests showed the electrode performed well as both a supercapacitor and a hydrogen evolution reaction (HER). The investigation of the hydrogen production reaction by the PPy-Cu2O-MoO3/GO/GFE shows that this electrode has a smaller Tafel slope and overpotential. Additionally, the PPy-Cu2O-MoO3/GO/GFE has a specific capacitance of 1010.30 mF cm−2 at 1 mA cm−2 in a 0.5 M H2SO4 electrolyte solution. The evaluation of the fabrication of a symmetric solid-state supercapacitor device shows that the constructed device has an excellent capacitance of 596.5 mF cm−2 at 1 mA cm−2 and a cyclic stability of 82.4% after 6000 GCD cycles. For hydrogen evolution reaction, the electrode demonstrated an overpotential of 361 mV at 10 mA cm−2 and a Tafel slope of 142 mV dec−1, indicating favorable electrocatalytic activity. These results highlight the potential of the synthesized nanocomposite as a multifunctional electrode material for both energy storage and clean energy production. |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-08-01 |
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| spelling | doaj-art-93dd7f0503d84a229632b5fc83f959ea2025-08-24T11:22:45ZengNature PortfolioScientific Reports2045-23222025-08-0115111410.1038/s41598-025-17069-zIn situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitorsReza Dadashi0Morteza Bahram1Khalil Farhadi2Postdoc, Department of Analytical Chemistry, Faculty of Chemistry, Urmia UniversityDepartment of Analytical Chemistry, Faculty of Chemistry, Urmia UniversityDepartment of Analytical Chemistry, Faculty of Chemistry, Urmia UniversityAbstract In this work, a simple, single-step electrochemical method is used to decorate a ternary Polypyrrole-Cu2O-MoO3 (PPy-Cu2O-MoO3) nanocomposite on Graphene Oxide (GO) nanosheets formed on a Graphite Foil Electrode (GFE). The characterization confirmed successful synthesis of ternary nanocomposite, and electrochemical tests showed the electrode performed well as both a supercapacitor and a hydrogen evolution reaction (HER). The investigation of the hydrogen production reaction by the PPy-Cu2O-MoO3/GO/GFE shows that this electrode has a smaller Tafel slope and overpotential. Additionally, the PPy-Cu2O-MoO3/GO/GFE has a specific capacitance of 1010.30 mF cm−2 at 1 mA cm−2 in a 0.5 M H2SO4 electrolyte solution. The evaluation of the fabrication of a symmetric solid-state supercapacitor device shows that the constructed device has an excellent capacitance of 596.5 mF cm−2 at 1 mA cm−2 and a cyclic stability of 82.4% after 6000 GCD cycles. For hydrogen evolution reaction, the electrode demonstrated an overpotential of 361 mV at 10 mA cm−2 and a Tafel slope of 142 mV dec−1, indicating favorable electrocatalytic activity. These results highlight the potential of the synthesized nanocomposite as a multifunctional electrode material for both energy storage and clean energy production.https://doi.org/10.1038/s41598-025-17069-zPolypyrroleCu2O-MoO3GO nanosheetSupercapacitorH2 generation |
| spellingShingle | Reza Dadashi Morteza Bahram Khalil Farhadi In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors Scientific Reports Polypyrrole Cu2O-MoO3 GO nanosheet Supercapacitor H2 generation |
| title | In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| title_full | In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| title_fullStr | In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| title_full_unstemmed | In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| title_short | In situ electrochemical synthesis of polypyrrole Cu2O MoO3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| title_sort | in situ electrochemical synthesis of polypyrrole cu2o moo3 nanocomposite on graphene oxide nanosheets for hydrogen generation and supercapacitors |
| topic | Polypyrrole Cu2O-MoO3 GO nanosheet Supercapacitor H2 generation |
| url | https://doi.org/10.1038/s41598-025-17069-z |
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