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New polymer electrolyte membranes for fuel cells

Weiber, Annika LU ; Dang, Hai-Son LU ; Takamuku, Shogo LU and Jannasch, Patric LU orcid (2014) 6th Forum on New Materials
Abstract
Durable polymers functionalized with acidic or basic groups are currently developed for proton- or anion-exchange membrane (PEM or AEM) fuel cells, respectively. The properties of perfluorosulfinic acid PEMs restrict the conditions under which these fuel cells can be operated because of limitations conductivity and stability. We are presently pursuing different approaches to alternative membranes where sulfonic acid groups are concentrated to selected aromatic segments in the polymeric structure to induce a higher level of organization of the conducting phase domains in the PEM. This includes for example the preparation of various highly stable hydrophilic-hydrophobic multiblock copolymers with blocks having very high acid contents. This... (More)
Durable polymers functionalized with acidic or basic groups are currently developed for proton- or anion-exchange membrane (PEM or AEM) fuel cells, respectively. The properties of perfluorosulfinic acid PEMs restrict the conditions under which these fuel cells can be operated because of limitations conductivity and stability. We are presently pursuing different approaches to alternative membranes where sulfonic acid groups are concentrated to selected aromatic segments in the polymeric structure to induce a higher level of organization of the conducting phase domains in the PEM. This includes for example the preparation of various highly stable hydrophilic-hydrophobic multiblock copolymers with blocks having very high acid contents. This leads to excellent performance and high proton conductivity at low relative humidity. AEM fuel cells hold the promise of platinum free catalysis, but present critical challenges in terms of membrane conductivity and stability. Here, we are preparing and studying various aromatic AEMs which contain very high local concentrations of ammonium moieties for high anionic conductivity and enhanced durability. Macromolecular design principles, synthetic procedures and important structure-property relationships of these new materials will be discussed. (Less)
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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of CIMTEC 2014
publisher
Trans Tech Publications
conference name
6th Forum on New Materials
conference location
Montecatini Terme, Tuscany, Italy
conference dates
2014-06-15 - 2014-06-19
language
English
LU publication?
yes
additional info
Invited lecture in session FA-2: "Proton-conducting and Alkaline Polymer Electrolyte Fuel Cells". Part of the 13th senior edition of the International Conferences on Modern Materials and Technologies (CIMTEC 2014). Presentation FA-2:IL09.
id
46f22bd4-6269-490b-bfd0-83dc2ad22c94 (old id 4317804)
date added to LUP
2016-04-04 11:36:52
date last changed
2021-02-22 09:56:12
@inproceedings{46f22bd4-6269-490b-bfd0-83dc2ad22c94,
  abstract     = {Durable polymers functionalized with acidic or basic groups are currently developed for proton- or anion-exchange membrane (PEM or AEM) fuel cells, respectively. The properties of perfluorosulfinic acid PEMs restrict the conditions under which these fuel cells can be operated because of limitations conductivity and stability. We are presently pursuing different approaches to alternative membranes where sulfonic acid groups are concentrated to selected aromatic segments in the polymeric structure to induce a higher level of organization of the conducting phase domains in the PEM. This includes for example the preparation of various highly stable hydrophilic-hydrophobic multiblock copolymers with blocks having very high acid contents. This leads to excellent performance and high proton conductivity at low relative humidity. AEM fuel cells hold the promise of platinum free catalysis, but present critical challenges in terms of membrane conductivity and stability. Here, we are preparing and studying various aromatic AEMs which contain very high local concentrations of ammonium moieties for high anionic conductivity and enhanced durability. Macromolecular design principles, synthetic procedures and important structure-property relationships of these new materials will be discussed.},
  author       = {Weiber, Annika and Dang, Hai-Son and Takamuku, Shogo and Jannasch, Patric},
  booktitle    = {Proceedings of CIMTEC 2014},
  language     = {eng},
  publisher    = {Trans Tech Publications},
  title        = {New polymer electrolyte membranes for fuel cells},
  year         = {2014},
}