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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Diamond and Carbon Nanotube Composites for Supercapacitor Devices

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Autor(es):
Silva Moreira, Joao Vitor ; May, Paul William ; Corat, Evaldo Jose ; Peterlevitz, Alfredo Carlos ; Pinheiro, Romario Araujo ; Zanin, Hudson
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: Journal of Electronic Materials; v. 46, n. 2, p. 929-935, FEB 2017.
Citações Web of Science: 6
Resumo

We report on the synthesis and electrochemical properties of diamond grown onto vertically aligned carbon nanotubes with high surface areas as a template, resulting in a composite material exhibiting high double-layer capacitance as well as low electrochemical impedance electrodes suitable for applications as supercapacitor devices. We contrast results from devices fabricated with samples which differ in both their initial substrates (Si and Ti) and their final diamond coatings, such as boron-doped diamond and diamond-like carbon (DLC). We present for first time a conducting model for non-doped DLC thin-films. All samples were characterized by scanning and transmission electron microscopy and Fourier transform infrared and Raman spectroscopy. Our results show specific capacitance as high as 8.25 F g(-1) (similar to 1 F cm(-2)) and gravimetric specific energy and power as high as 0.7 W h kg(-1) and 176.4 W kg(-1), respectively, which suggest that these diamond/carbon nanotube composite electrodes are excellent candidates for supercapacitor fabrication. (AU)

Processo FAPESP: 14/02163-7 - Desenvolvimento de dispositivos supercapacitores a partir de grafenos, nanotubos de carbono e diamantes
Beneficiário:Hudson Giovani Zanin
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores