13 / 24
Smart Materials Congress 2019
Nano Research and Applications
ISSN: 2471-9838
Page 41
August 01-02, 2019
Dublin, Ireland
Smart Materials and
Structures
8
th
International Conference on
Nano Res Appl 2019, Volume 05
A low-cost, high-performance, high-durability fuel cell
Liang An
The Hong Kong Polytechnic University, Hong Kong
I
n this work, we propose to create the cathode potential
by introducing a redox couple to the cathode while to
use hydrogen peroxide to chemically charge to redox
ions, as illustrated. The introduction of the redox couple
to the cathode brings the following striking features.
First, the absence of hydrogen peroxide in the reduction
reaction eliminates the mixed-potential issue. Second,
the presence of the redox couple in the reduction
reaction significantly improves the electrochemical
kinetics, thereby resulting in a high-performance fuel cell.
Lastly, the use of the catalyst-free carbon materials for
the reduction reaction makes this fuel cell system more
cost-effective. It has been demonstrated that the fuel cell
running on ethanol with a redox couple of V (IV)/V(V)
yields a peak power density of 450 mW cm
-2
at 60
o
C,
which is 87.5% higher than that of the conventional cell
with direct reduction of hydrogen peroxide.
liang.an@polyu.edu.hk