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Research Field |
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Direct
Alcohol Fuel Cells |
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 Direct
Alcohol Fuel Cell (DAFC), a
class of device that converts
the chemical energy of fuels
(methanol, ethanol, etc)
directly into electricity by
electrochemical reaction, is a
promising candidate as portable
power sources for mobile phones,
cameras, notebook computers,
electric bicycles, scooters and
other mobile applications due to
their high energy density,
compact system, easy fuel
storage and transportation, etc.
Focusing on the core technical
issues, the researches on
CO/methanol tolerant
electrocatalysts, alcohol
resistance and temperature
tolerant membranes, novel
structured MEA and system
integration of DAFCs have been
carrying out since 2001.
A number of technologies in
terms of the preparation of
carbon supported
electrocatalysts with high
loading, high dispersion,
particle size/alloy
degree/preferable crystal facets
controllable in nano-scales, the
manufacture of membrane and
electrode assemblies (MEAs) with
key component orientation
desirable and multilayer
structured electrodes, the
system integration of DAFCs both
in active and passive models was
explored and developed, and the
prepared electrocatalysts (PtRu/C,
PtSn/C, PtIr/C, Pt/C, PtFe/C,
PtPd/C, PtRuSn/C, PtRuIr/C,
PtRuMo/C, PtRuW/C, etc.),
membranes (sPES, sPEEK, Nafion/inorganic
composite membrane) and MEAs
showed a high performance and
long durability in DAFC test and
evaluation. Several
demonstrations of DAFC systems
with power ranging from
sub-watts to 100 watts were
fabricated in the group.
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Metal (Magnesium, Aluminum, Zinc,
etc.) /O2
(Air) Battery
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 The
Metal (Magnesium, Aluminum,
Zinc, etc.) /O2
(Air) Battery(Me/O2),
a class of device that converts
chemical energy of metal (Mg,
Al, Zn, etc.) directly into
electricity by electrochemical
reaction, can be widely used as
small and medium power sources
in the field of electric
vehicles, undersea vehicles and
so on due to its high energy
density both in weight and
volume, environmental benign,
low cost and immediate switching
at low temperature. The
activities of research and
development in the group mainly
focused on the system of Me/O2
and Me/O2/FC
hybrid, including fundamental
and engineering fundamental
related to the non-noble
eletrocatalysts, hydrogen
eliminated composite cathode,
system integration. Several
prototypes of Me/O2
and Me/O2/FC
systems with power from watts to
100 watts were fabricated.
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Direct Alkaline
Alcohol Anion Exchange Membrane Fuel
Cells |
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 The
direct alcohol alkaline anion exchange
membrane fuel cell (DA3EMFC),
using alcohol (methanol, ethanol, etc.)
as a fuel and anion exchange membrane as
a solid electrolyte, converts chemical
energy of the fuels directly into
electricity by electrochemical reaction
in alkaline media. Compared with
conventional alkaline fuel cells, DA3EMFC
has many advantages in terrestrial
applications. The novel
quaternary-ammonium membrane (QAM) by
means of radiation-grafting and PBI/OH
hybrid membrane, which show high ionic
conductivities and mechanic stabilities,
were developed, the electrocatalysts
with high activity, such as PtPb/C, PtNi/C,
Pd/C, etc., were prepared and numbers of
DA3EMFC
prototypes have been explored and
fabricated so far.
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The
electrochemical sensors are highlighted
in the field of measurement and control
due to their simplicity in
structure，convenience in carry, high
accuracy in measurement, ease in
combination with other technologies. A
number of electrochemical sensors for
measuring the concentration of Methanol,
ethanol, formaldehyde, etc. have been
investigated and developed, based on MEA
structure in last years in the group.
Among the sensors, the potentiodynamic
electrochemical methanol sensors have
been successfully conducted into DMFC
systems.
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