Porous Platinum Electrodes
Fabricated by Cyclic Electrodeposition
of PtCu Alloy: Application to Implantable Glucose Fuel Cells
Posted on 2012-09-20 - 00:00
We demonstrate the application of cyclic electrodeposition
of PtCu
alloy to fabricate porous platinum electrodes for implantable glucose
fuel cells. Depending on the number of deposition cycles, electrodes
with controllable specific surface area can be fabricated, their roughness
factors ranging from 20 (slightly roughened) to 3100 (highly porous).
Adjusting the specific surface area of the electrode from low to high
determines whether it functions as cathode or anode, respectively.
Compared to state of the art, this process is beneficial due to shorter
fabrication times, lower temperatures, and the requirement of only
one process for the fabrication of both electrodes. Correspondingly
fabricated glucose fuel cells showed a power density of 5.1 μW
cm–2 under close to physiological conditions, which
is an improvement by 16% compared to earlier designs. During continuous
operation over 90 days the fuel cell showed a mean continuous decay
of about 0.8% per day, which is related to catalyst poisoning at the
anode. Future work will thus have to focus on the improvement of long-term
stability instead of power density.
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Kloke, Arne; Köhler, Christian; Zengerle, Roland; Kerzenmacher, Sven (2016). Porous Platinum Electrodes
Fabricated by Cyclic Electrodeposition
of PtCu Alloy: Application to Implantable Glucose Fuel Cells. ACS Publications. Collection. https://doi.org/10.1021/jp306168t
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AUTHORS (4)
AK
Arne Kloke
CK
Christian Köhler
RZ
Roland Zengerle
SK
Sven Kerzenmacher