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Volume 9
Journal of Bioremediation & Biodegradation
ISSN: 2155-6199
Biofuel Congress 2018 &
Biomass 2018
September 04-06, 2018
JOINT EVENT
September 04-06, 2018 | Zurich, Switzerland
13
th
Global Summit and Expo on
Biomass and Bioenergy
&
12
th
World Congress on
Biofuels and Bioenergy
Modelling Physical Vapor Deposited Nano-scaled Nickel Cermet Anodes for Fuel Cells Operating on
Biomass
Waqas Hassan Tanveer
National University of Science & Technology (NUST), Pakistan
N
ickel-Gadolinium Doped Ceria (Ni-GDC) cermet anodic thin films were prepared on zirconia electrolyte supports
by two distinct physical vapor deposition (PVD) processes, 1) pulsed laser deposition (PLD) 2) radio frequency (RF)
sputtering. For PLD, the deposition was carried out at a target temperature range of 0°C~700°C. For RF sputtering, the target
temperature was kept constant at room temperature of 25°C, however the background sputtering gas was Ar:O2/80:20. The
fuel cell configuration was completed by screen printing of lanthanum strontiummanganite (LSM/YSZ) cathodes on the other
side of electrolyte supports. Peak performance comparison of these cells was measured under hydrogen (H
2
) fuel source at an
intermediate temperature range of 600°C ~ 800°C by voltage-current-power curves. The resistances of various cell components
were observed by nyquist plots. Initial results showed that anode thin films made at increased target temperature, pressure, and
high deposition power, performed better than the low powered ones, for a specific Ar or O
2
pressure. Interestingly, however,
anodes made at the highest power and the highest pressure, were not the ones that showed the maximum power output at
an intermediate oxide fuel cell temperature range. These high performance anodes were then tested under the product fuel
of CO
2
electro-reduced via biomass carbon obtained from industrial waste(IWC). IWC fuel performance matched up to the
H2 fuel performance in terms of peak power density and longevity, with an added lower fuel cost advantage. High resolution
transmission and scanning electron microscope 2D images were utilized to understand the three phased (Ni, Ce, Pores) of the
cermet anode made by both PVD processes. The electrochemical model was used to simulate the kinetics of nanostructured
porous thin film cermet anodes. Experimental and simulation results were coherent with each other, especially for IWC
operated fuel cells working at the upper range of intermediate SOFCs.
waqas.hassan@smme.edu.pkJ Bioremediat Biodegrad 2018, Volume 9
DOI: 10.4172/2155-6199-C1-015