Unexpected Stabilization of alpha-Ni(OH)(2) Nanoparticles in GO Nanocomposites

Autor(es)

Goncalves, Josue M. ; Alves, Kamilla M. ; Gonzalez-Huila, Manuel F. ; Duarte, Alfredo ; Martins, Paulo R. ; Araki, Koiti

• Tipo de documento: Artigo Científico
• Fonte: Journal of Nanomaterials; v. 2018, p. 13-pg., 2018-01-01.

Resumo

Large specific charge capacity Ni(OH)(2)@GO nanocomposites, able to withstand high current densities and more than 500 redox cycles without significant loss of charge storage capacity, were realized thanks to unexpected stabilization of electrochemically active -Ni(OH)(2) nanoparticles by GO and were characterized by TEM, XRD, FTIR, TXRF, and confocal Raman microscopy. Stable and adherent films with low electric resistance, able to withstand current densities as high as 100Ag(-1), were generated, as demonstrated by CV, EIS, and galvanostatic charge-discharge measurements, showing good perspectives as electrode material for hybrid energy storage devices. (AU)

• Processo FAPESP: 13/24725-4 - Química supramolecular e nanotecnologia
• Beneficiário: Henrique Eisi Toma
• Modalidade de apoio: Auxílio à Pesquisa - Temático