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|Title: ||Proton conductivity of Nafion-azolebisphosphonates membranes for PEM fuel cells|
|Authors: ||Teixeira, António P. S.|
Teixeira, Fátima C.
Rangel, Carmen M.
Sá, Ana I. de
Nafion doped membranes
proton exchange membranes
|Issue Date: ||Sep-2018|
|Publisher: ||AEM2018 Advanced Energy Materials|
|Citation: ||Fátima C. Teixeira, Ana I. de Sá, António P. S. Teixeira e Carmen M. Rangel, “Proton conductivity of Nafion-azolebisphosphonates membranes for PEM fuel cells”, (Abstract ID: 179), AEM2018 Advanced Energy Materials, Surrey, England, 2018 (Livro de Resumos e Poster).|
|Abstract: ||Energy systems with cleaner and sustainable sources are
crucial challenges of the 21st century to deal with the
environmental threat of global warming and the declining
reserves of fossil fuels. Fuel cells are electrochemical
devices that convert the chemical energy stored in a fuel
directly into electrical energy, providing electrical energy
with high efficiency and low environmental impact.
Among them, proton exchange membrane fuel cells
(PEMFCs) are considered promising power sources, due
to their high power density and high power-to-weight
ratio but their performance depends crucially on their
proton exchange membranes . Usually, these
membranes are made of organic polymers containing
acidic functionalities (ex.
Nafion® ), which proton
transport properties strongly depend on their water
content and, consequently, limit their operation
temperatures up to 90ºC. Preliminary studies have
demonstrated that incorporation of aryl-bisphosphonic
acids into Nafion, by casting, results in an enhancement
of the proton conductivity of the membrane.
The aim of this work was the preparation of new Nafion
membranes doped with azolebisphosphonates derivatives,
which could act as a source of protons and also function
as proton acceptors, facilitating the intermolecular
transmission of protons through the membrane.|
|Appears in Collections:||QUI - Comunicações - Em Congressos Científicos Internacionais|
CQE - Comunicações - Em Congressos Científicos Internacionais
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