Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7727876 | Journal of Power Sources | 2016 | 8 Pages |
Abstract
Polyoxometalate immobilized nanofiber was used to fabricate low gas permeable layer for composite membranes designed for proton exchange membrane fuel cell (PEMFC) operating at low relative humidity (RH). The composite membranes revealed enhanced proton conductivity in dry conditions compared with state-of-the-art pristine membrane (Nafion 112, N112). This was coupled with a low fuel crossover inheriting the composite membranes about 100 mV higher OCV than N112 when tested in PEMFC at 60 °C and 40% RH. A maximum power density of up to 930 mW cmâ2 was also achieved which is substantially higher than the N112 under similar conditions (577 mW cmâ2). Such remarkable performance enhancement along with undetectable leaching of immobilized polyoxometalate, high dimensional stability and low water uptake of the composite membranes suggest a strong potential for PEMFC under low RH operation.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Ebrahim Abouzari-lotf, Mohan V. Jacob, Hossein Ghassemi, Arshad Ahmad, Mohamed Mahmoud Nasef, Masoumeh Zakeri, Shahram Mehdipour-Ataei,