Fabrication and characterization of graphite-cement composites for microbial fuel cells applications

Title
Fabrication and characterization of graphite-cement composites for microbial fuel cells applications
Authors
그라지아 아카르도Domenico FrattiniClaudio FeroneRaffaele Cioff
Keywords
Composites; Microstructure; Mechanical properties; Electrochemical properties; Electrical properties
Issue Date
2017-04
Publisher
Materials research bulletin
Citation
VOL 88-199
Abstract
Graphite-cement composites, with graphite up to 80% w/w, were prepared and characterized. The key feature of this novel material is its conductive and porous microstructure, due to a synergic effect between cementitious matrix and graphite particles. As graphite content increases, a characteristic percolation threshold exists. The threshold value depends on curing temperature and determines a remarkable change in electrical, physical and mechanical properties. In the proximity of the threshold, conductivity increased from 3.2.10(-5)S m(-1) to 2S m(-1) and porosity increased from 48% to 60%. Compressive strength indicates a similar behaviour and thermally cured composites exhibit higher strength. The thermally treated composite with 50% w/w of graphite is chosen for electrochemical analysis. Cyclic voltammetry and kinetic study with linear sweep voltammetry confirmed that these materials can catalyse cathodic reactions with an interesting current density and low overpotential. The graphite-cement composite developed is an eligible material for microbial fuel cell applications.
URI
http://pubs.kist.re.kr/handle/201004/67070
ISSN
0025-5408
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE