Anion-exchange membrane: Difference between revisions
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==Advantage== |
==Advantage== |
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The advantage of the [[alkali]] anion exchange membrane in the [[fuel cell]] is the potential to use non-noble metals such as [[iron]], [[cobalt]] or [[nickel]]<ref>[http://www.reuters.com/article/environmentNews/idUSL1461117220070914 Platinum-free fuel cell developed in Japan]</ref> due to the low [[overpotential]]s associated with [[electrochemical]] reactions at high [[pH]]<ref>[http://ecsmeet7.peerx-press.org/ms_files/ecsmeet7/2008/12/11/00000661/00/661_0_art_0_kbqbhk.pdf Poly(phenylene)-based anion exchange membranes for alkaline fuel cells]</ref><ref>[http://www.electrochem.org/meetings/scheduler/abstracts/214/0783.pdf Anion Exchange Membrane and Ionomer for Alkaline Membrane Fuel Cells]</ref>. In comparison against [[Alkaline fuel cell]], alkali anion exchange membrane fuel cells also protect the electrode from [[carbonate]] |
The advantage of the [[alkali]] anion exchange membrane in the [[fuel cell]] is the potential to use non-noble metals such as [[iron]], [[cobalt]] or [[nickel]]<ref>[http://www.reuters.com/article/environmentNews/idUSL1461117220070914 Platinum-free fuel cell developed in Japan]</ref> due to the low [[overpotential]]s associated with [[electrochemical]] reactions at high [[pH]]<ref>[http://ecsmeet7.peerx-press.org/ms_files/ecsmeet7/2008/12/11/00000661/00/661_0_art_0_kbqbhk.pdf Poly(phenylene)-based anion exchange membranes for alkaline fuel cells]</ref><ref>[http://www.electrochem.org/meetings/scheduler/abstracts/214/0783.pdf Anion Exchange Membrane and Ionomer for Alkaline Membrane Fuel Cells]</ref>. In comparison against [[Alkaline fuel cell]], alkali anion exchange membrane fuel cells also protect the electrode from solid [[carbonate]] precipitation, which can cause fuel (oxygen/hydrogen) transport problem during start-up. |
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==See also== |
==See also== |
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Revision as of 10:16, 31 October 2011
An alkali anion exchange membrane (AAEM) is a semipermeable membrane generally made from ionomers and designed to conduct anions while being impermeable to gases such as oxygen or hydrogen. This is their essential function when incorporated into a membrane electrode assembly (MEA) of a DMFC[1] or DEFC [2]: separation of reactants and transport of anions.
Advantage
The advantage of the alkali anion exchange membrane in the fuel cell is the potential to use non-noble metals such as iron, cobalt or nickel[3] due to the low overpotentials associated with electrochemical reactions at high pH[4][5]. In comparison against Alkaline fuel cell, alkali anion exchange membrane fuel cells also protect the electrode from solid carbonate precipitation, which can cause fuel (oxygen/hydrogen) transport problem during start-up.
See also
- Alkaline fuel cell
- Artificial membrane
- Gas diffusion electrode
- Ion exchange
- Glossary of fuel cell terms
- Proton exchange membrane
References
- ^ Comparison of PVDF and FEP based radiation-grafted alkaline anionexchange membranes for use in low temperature portable DMFCs
- ^ Direct ethanol fuel cells using alkaline anion exchange membrane
- ^ Platinum-free fuel cell developed in Japan
- ^ Poly(phenylene)-based anion exchange membranes for alkaline fuel cells
- ^ Anion Exchange Membrane and Ionomer for Alkaline Membrane Fuel Cells
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