Co-assembly of aNafion–Mesoporous ZirconiumPhosphate Composite Membrane for PEM Fuel Cells
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Co-assembly of aNafion–Mesoporous
ZirconiumPhosphate Composite
Membrane for PEM Fuel Cells
|
|
| Creator |
Sahu, AK.
Pitchumani, S. Sridhar, P. Shukla, A.K. |
|
| Subject |
Fuel Cells
|
|
| Description |
Synthesis of mesoporous zirconium phosphate (MZP) by coassembly
of a tri-block copolymer, namely pluronic-F127, as
a structure-directing agent, and a mixture of zirconium butoxide
and phosphorous trichloride as inorganic precursors
is reported. MZP with a specific surface area of 84 m2 g–1,
average pore diameter of about 17 nm and pore volume of
0.35 cm3 g–1 has been prepared, and characterised by X-ray
diffraction (XRD) and transmission electron microscopy.
Nafion–MZP composite membrane is obtained by employing
MZP as a surface-functionalised solid-super-acid-proton-
conducting medium as well as an inorganic filler with
high affinity to absorb water and fast proton-transport
across the electrolyte membrane even under low relative
humidity (RH) conditions. The composite membranes have
been evaluated in H2/O2 polymer electrolyte fuel cells
(PEFCs) at varying RH values between 18 and 100%; a peak
power density of 355 mW cm–2 at a load current density of
1,100 mA cm–2 is achieved with the PEFC employing
Nafion–MZP composite membrane while operating at optimum
temperature (70 °C) under 18% RH and ambient pressure.
On operating the PEFC employing Nafion–MZP membrane
electrolyte with hydrogen and air feeds at ambient
pressure and a RH value of 18%, a peak power density of
285 mW cm–2 at the optimum temperature (60 °C) is
achieved. In contrast, operating under identical conditions, a
peak power density of only ∼170 mW cm–2 is achieved with
the PEFC employing Nafion-1135 membrane electrolyte.
|
|
| Publisher |
Wiley Interscience
|
|
| Date |
2009
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/357/1/053-2009.pdf
Sahu, AK. and Pitchumani, S. and Sridhar, P. and Shukla, A.K. (2009) Co-assembly of aNafion–Mesoporous ZirconiumPhosphate Composite Membrane for PEM Fuel Cells. Fuel Cells, 9 (2). pp. 139-147. ISSN 1615-6846 |
|
| Relation |
http://cecri.csircentral.net/357/
|
|