TY - JOUR
T1 - Membrane electrode assembly with doped polyaniline interlayer for proton exchange membrane fuel cells under low relative humidity conditions
AU - Cindrella, L.
AU - Mada Kannan, Arunachala
N1 - Funding Information:
Cindrella Louis and Arunachala Kannan acknowledge the financial support from the Arizona State University through Global Engagement Seed Grant for inter-institutional research collaboration.
PY - 2009/9/5
Y1 - 2009/9/5
N2 - A membrane electrode assembly (MEA) was designed by incorporating an interlayer between the catalyst layer and the gas diffusion layer (GDL) to improve the low relative humidity (RH) performance of proton exchange membrane fuel cells (PEMFCs). On the top of the micro-porous layer of the GDL, a thin layer of doped polyaniline (PANI) was deposited to retain moisture content in order to maintain the electrolyte moist, especially when the fuel cell is working at lower RH conditions, which is typical for automotive applications. The surface morphology and wetting angle characteristics of the GDLs coated with doped PANI samples were examined using FESEM and Goniometer, respectively. The surface modified GDLs fabricated into MEAs were evaluated in single cell PEMFC between 50 and 100% RH conditions using H2 and O2 as reactants at ambient pressure. It was observed that the MEA with camphor sulfonic acid doped PANI interlayer showed an excellent fuel cell performance at all RH conditions including that at 50% at 80 °C using H2 and O2..
AB - A membrane electrode assembly (MEA) was designed by incorporating an interlayer between the catalyst layer and the gas diffusion layer (GDL) to improve the low relative humidity (RH) performance of proton exchange membrane fuel cells (PEMFCs). On the top of the micro-porous layer of the GDL, a thin layer of doped polyaniline (PANI) was deposited to retain moisture content in order to maintain the electrolyte moist, especially when the fuel cell is working at lower RH conditions, which is typical for automotive applications. The surface morphology and wetting angle characteristics of the GDLs coated with doped PANI samples were examined using FESEM and Goniometer, respectively. The surface modified GDLs fabricated into MEAs were evaluated in single cell PEMFC between 50 and 100% RH conditions using H2 and O2 as reactants at ambient pressure. It was observed that the MEA with camphor sulfonic acid doped PANI interlayer showed an excellent fuel cell performance at all RH conditions including that at 50% at 80 °C using H2 and O2..
KW - Membrane electrode assembly
KW - PEM fuel cells
KW - Polyaniline
KW - Surface morphology
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U2 - 10.1016/j.jpowsour.2009.04.002
DO - 10.1016/j.jpowsour.2009.04.002
M3 - Article
AN - SCOPUS:67649400357
SN - 0378-7753
VL - 193
SP - 447
EP - 453
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -