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

Author(s)

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

• Document type: Journal article
• Source: Journal of Nanomaterials; v. 2018, p. 13-pg., 2018-01-01.

Abstract

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)

• FAPESP's process: 13/24725-4 - Supramolecular chemistry and nanotechnology
• Grantee: Henrique Eisi Toma
• Support Opportunities: Research Projects - Thematic Grants