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Type: 
Journal
Description: 
We describe the production of graphene-based composites for energy storage, obtained by a combination of electrochemical and solution processing techniques. Electrochemically exfoliated graphene oxide sheets (EGO) are produced using an original setup that allows fast expansion of graphite flakes and efficient exfoliation of expanded graphite via an electrochemical route. The sheets are deposited on a sacrificial nickel foam together with an iron hydroxide colloidal precursor. Calcination treatment simultaneously renders the EGO foam conductive and transforms Fe(OH)3 into hematite (α-Fe2O3), yielding a nanoporous Fe2O3 layer on the surface of the mesoporous EGO foam, creating an ideal structure for lithium storage. The obtained graphene/metal oxide hybrid is a continuous, electrically conductive three-dimensional (3D) composite featuring a hierarchical meso–nano porous structure. A systematic study …
Publisher: 
Pergamon
Publication date: 
30 Apr 2015
Authors: 

Zhen Yuan Xia, Di Wei, Elzbieta Anitowska, Vittorio Bellani, Luca Ortolani, Vittorio Morandi, Massimo Gazzano, Alberto Zanelli, Stefano Borini, Vincenzo Palermo

Biblio References: 
Volume: 84 Pages: 254-262
Origin: 
Carbon