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Electrochemically Enabled Sustainability
book

Electrochemically Enabled Sustainability

by Kwong-Yu Chan, Chi-Ying Vanessa Li
June 2014
Intermediate to advanced content levelIntermediate to advanced
519 pages
17h 58m
English
CRC Press
Content preview from Electrochemically Enabled Sustainability
85Microbial Fuel Cells and Other Bio-Electrochemical Conversion Devices
2.3.3.3 Cathode Performance
The cathode reaction efciency depends on a variety of factors, including the
concentration and species of the oxidant (electron acceptor), catalyst perfor-
mance, electrode structure and operational conditions.
Oxygen, hexacyanoferrate (K
3
[Fe(CN)
6
]) and permanganate (KMnO
4
),
which possess high redox potentials, have been used as electron acceptors at
the cathode. Although hexacyanoferrate and permanganate may produce a
similar or higher cathode potential than oxygen (OCP
cathode
of 0.70 and 1.38 V
vs. ~0.4 V; [73]), oxygen remains as the most commonly used and promis-
ing cathodic oxidant, due to its free and clean nature. In many cases, oxy
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Publisher Resources

ISBN: 9781466575431