AEM yog qee qhov kev sib xyaw ntawm PEM thiab cov diaphragm raws li lye electrolysis ib txwm muaj. Lub hauv paus ntsiab lus ntawm AEM electrolytic cell tau qhia nyob rau hauv Daim Duab 3. Ntawm cathode, dej raug txo kom tsim hydrogen thiab OH -. OH - ntws los ntawm diaphragm mus rau anode, qhov chaw nws rov ua ke los tsim cov pa oxygen.
Li et al. [1-2] tau kawm txog cov polystyrene thiab polyphenylene AEM uas muaj quaternized heev, thiab cov txiaj ntsig tau qhia tias qhov ceev tam sim no yog 2.7A/cm2 ntawm 85°C ntawm qhov hluav taws xob ntawm 1.8V. Thaum siv NiFe thiab PtRu/C ua cov catalysts rau kev tsim hydrogen, qhov ceev tam sim no txo qis mus rau 906mA/cm2. Chen et al. [5] tau kawm txog kev siv cov catalyst electrolytic uas ua haujlwm tau zoo hauv cov roj alkaline polymer film electrolyzer. NiMo oxides tau txo los ntawm H2/NH3, NH3, H2 thiab N2 gases ntawm ntau qhov kub sib txawv los tsim cov catalysts electrolytic hydrogen. Cov txiaj ntsig qhia tau tias NiMo-NH3/H2 catalyst nrog H2/NH3 txo qis muaj kev ua tau zoo tshaj plaws, nrog qhov ceev tam sim no txog li 1.0A/cm2 thiab kev hloov pauv zog ntawm 75% ntawm 1.57V thiab 80°C. Evonik Industries, raws li nws cov thev naus laus zis cais roj uas twb muaj lawm, tau tsim cov khoom siv polymer patented rau kev siv hauv AEM electrolytic cells thiab tam sim no tab tom nthuav dav kev tsim cov membrane ntawm kab pilot. Kauj ruam tom ntej yog xyuas kom meej qhov kev ntseeg tau ntawm lub kaw lus thiab txhim kho cov lus qhia roj teeb, thaum nthuav dav kev tsim khoom.
Tam sim no, cov teeb meem tseem ceeb uas AEM electrolytic cells ntsib yog qhov tsis muaj conductivity siab thiab alkaline tsis kam ntawm AEM, thiab cov hlau muaj nqis electrocatalyst ua rau tus nqi ntawm kev tsim cov khoom siv electrolytic nce. Tib lub sijhawm, CO2 nkag mus rau hauv zaj duab xis cell yuav txo qhov tsis kam ntawm zaj duab xis thiab electrode tsis kam, yog li txo qhov kev ua tau zoo electrolytic. Kev coj ua yav tom ntej ntawm AEM electrolyzer yog raws li nram no: 1. Tsim AEM nrog kev conductivity siab, ion selectivity thiab ntev alkaline ruaj khov. 2. Kov yeej qhov teeb meem ntawm tus nqi siab ntawm cov hlau muaj nqis catalyst, tsim catalyst tsis muaj hlau muaj nqis thiab kev ua tau zoo siab. 3. Tam sim no, lub hom phiaj tus nqi ntawm AEM electrolyzer yog $ 20 / m2, uas yuav tsum tau txo los ntawm cov khoom siv raw pheej yig thiab txo cov kauj ruam synthesis, yog li txo tus nqi tag nrho ntawm AEM electrolyzer. 4. Txo cov ntsiab lus CO2 hauv electrolytic cell thiab txhim kho kev ua tau zoo electrolytic.
[1] Liu L, Kohl P A. Anion ua cov multiblock copolymers nrog cov cations sib txawv [J]. Phau ntawv Journal of Polymer Science Part A: Polymer Chemistry, 2018, 56 (13): 1395 - 1403.
[2] Li D, Park EJ, Zhu W, thiab lwm yam. Cov polystyrene ionomers uas muaj quaternized heev rau cov electrolysers dej uas muaj anion pauv tau zoo [J]. Nature Energy, 2020, 5: 378 — 385.
Lub sijhawm tshaj tawm: Lub Ob Hlis-02-2023