AEM water electrolysis working principle with HER and OER.
Anion exchange membrane(AEM) electrolysis is the electrolysis of water that utilises a semipermeable membrane that conducts hydroxide ions (OH−) called an anion exchange membrane. Like a proton-exchange membrane (PEM), the membrane separates the products, provides electrical insulation between electrodes, and conducts ions. Unlike PEM, AEM conducts hydroxide ions. The major advantage of AEM water electrolysis is that a high-cost noble metal catalyst is not required, low-cost transition metal catalyst can be used instead.[1][2] AEM electrolysis is similar to alkaline water electrolysis, which uses a non-ion-selective separator instead of an anion-exchange membrane.
^Varcoe, John R.; Atanassov, Plamen; Dekel, Dario R.; Herring, Andrew M.; Hickner, Michael A.; Kohl, Paul. A.; Kucernak, Anthony R.; Mustain, William E.; Nijmeijer, Kitty; Scott, Keith; Xu, Tongwen; Zhuang, Lin (2014). "Anion-exchange membranes in electrochemical energy systems". Energy Environ. Sci. 7 (10): 3135–3191. doi:10.1039/C4EE01303D. hdl:10044/1/24509.
^Dekel, Dario R. (January 2018). "Review of cell performance in anion exchange membrane fuel cells". Journal of Power Sources. 375: 158–169. Bibcode:2018JPS...375..158D. doi:10.1016/j.jpowsour.2017.07.117.
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