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Supercapacitors and triboelectric nanogenerators based on electrodes of greener iron nanoparticles/carbon nanotubes composites.
Dos Reis, Glaydson Simoes; de Oliveira, Helinando Pequeno; Candido, Iuri Custodio Montes; Freire, Andre Luiz; Molaiyan, Palanivel; Dotto, Guilherme Luiz; Grimm, Alejandro; Mikkola, Jyri-Pekka.
Affiliation
  • Dos Reis GS; Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden. glaydson.simoes.dos.reis@slu.se.
  • de Oliveira HP; Institute of Materials Science, Federal University of Sao Francisco Valley, Petrolina, 56304-205, Brazil.
  • Candido ICM; Institute of Materials Science, Federal University of Sao Francisco Valley, Petrolina, 56304-205, Brazil.
  • Freire AL; Institute of Materials Science, Federal University of Sao Francisco Valley, Petrolina, 56304-205, Brazil.
  • Molaiyan P; Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland.
  • Dotto GL; Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
  • Grimm A; Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden.
  • Mikkola JP; Technical Chemistry, Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
Sci Rep ; 14(1): 11555, 2024 May 21.
Article in En | MEDLINE | ID: mdl-38773205
ABSTRACT
The development of supporting materials based on carbon nanotubes (CNTs) impregnated with iron nanoparticles via a sustainable and green synthesis employing plant extract of Punica granatum L. leaves was carried out for the iron nanoparticle modification and the following impregnation into the carbon nanotubes composites (CNT-Fe) that were also coated with polypyrrole (CNT-Fe + PPy) for use as electrode for supercapacitor and triboelectric nanogenerators. The electrochemical characterization of the materials by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) assays revealed that the CNT-Fe + PPy gave rise to better performance due to the association of double-layer capacitance behavior of carbon derivative in association with the pseudocapacitance contribution of PPy resulting in an areal capacitance value 202 mF/ cm2 for the overall composite. In terms of the application of electrodes in triboelectric nanogenerators, the best performance for the composite of CNT-Fe + PPy was 60 V for output voltage and power density of 6 µW/cm2. The integrated system showed that the supercapacitors can be charged directly by the nanogenerator from 0 to 42 mV in 300 s. The successful green synthesis of iron nanoparticles on CNT and further PPy coating provides a feasible method for the design and synthesis of high-performance SCs and TENGs electrode materials. This work provides a systematic approach that moves the research front forward by generating data that underpins further research in self-powered electronic devices.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep / Sci. rep. (Nat. Publ. Group) / Scientific reports (Nature Publishing Group) Year: 2024 Document type: Article Affiliation country: Country of publication:

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep / Sci. rep. (Nat. Publ. Group) / Scientific reports (Nature Publishing Group) Year: 2024 Document type: Article Affiliation country: Country of publication: