Electronic enhancement of hybrid specific capacity of carbon nanotube/bone charcoal composite with Ag nanoparticle decoration

Author(s)

Matsubara, Elaine Y. ; Takahashi, Giuliana H. ; Macedo, Nadia G. ; Gunnella, Roberto ; Mauricio Rosolen, J.

• Document type: Journal article
• Source: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 765, p. 7-pg., 2016-03-15.

Abstract

We show a significant enhancement of specific capacity of a hybrid composite,prepared with carbon nanotube (CNT), bone charcoal and Ag nanoparticle (NP) constituents which may be explained by a mechanism involving the electronic coupling of Fermi levels of the NP and defective CNT. This electronic coupling leads to an additional specific capacity which is given by (C(NP)xC(CNT))/(C-NP + C-CNT), where C-NP, and C-CNT are the Li specific capacity of NP and CNT constituents, respectively. As a result, the specific capacity of defective carbon nanotube can be increased by twice with incorporation of only 0.8 wt.% of Ag NPs. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 10/07681-5 - Development and study of micro/nanostructurated materials of interest for Lithium ion battery and capacitors
• Grantee: Jose Mauricio Rosolen
• Support Opportunities: Regular Research Grants