Xyoo 1966, Lub Tuam Txhab General Electric tau tsim cov dej electrolytic cell raws li proton conduction tswvyim, siv polymer membrane li electrolyte. PEM hlwb tau ua lag luam los ntawm General Electric nyob rau hauv 1978. Tam sim no, lub tuam txhab tsim PEM hlwb tsawg dua, feem ntau vim nws txwv hydrogen ntau lawm, lub neej luv luv thiab cov nqi peev. PEM cell muaj cov qauv bipolar, thiab kev sib txuas hluav taws xob ntawm cov hlwb yog tsim los ntawm cov phiaj xwm bipolar, uas ua lub luag haujlwm tseem ceeb hauv kev tso tawm cov pa hluav taws xob. Cov anode, cathode, thiab membrane pawg tsim cov membrane electrode los ua ke (MEA). Cov electrode feem ntau yog tsim los ntawm cov hlau zoo xws li platinum lossis iridium. Ntawm lub anode, dej yog oxidized los tsim oxygen, electrons thiab protons. Ntawm cathode, cov pa oxygen, electrons thiab protons tsim los ntawm anode circulate los ntawm daim nyias nyias mus rau cathode, qhov uas lawv raug txo kom tsim hydrogen gas. Lub hauv paus ntsiab lus ntawm PEM electrolyzer yog qhia hauv daim duab.
PEM electrolytic hlwb feem ntau yog siv rau kev tsim cov hydrogen me me, nrog rau qhov siab tshaj plaws hydrogen ntau txog 30Nm3 / h thiab lub zog noj ntawm 174kW. Piv nrog alkaline cell, qhov tseeb hydrogen ntau npaum li cas ntawm PEM cell yuav luag tag nrho cov kev txwv. PEM cell tuaj yeem ua haujlwm ntawm qhov ceev tam sim no ntau dua li alkaline cell, txawm tias mus txog 1.6A / cm2, thiab cov electrolytic efficiency yog 48% -65%. Vim tias cov yeeb yaj kiab polymer tsis tiv taus qhov kub thiab txias, qhov kub ntawm cov electrolytic cell feem ntau qis dua 80 ° C. Hoeller electrolyzer tau tsim lub tshuab ua kom zoo tshaj plaws ntawm tes rau PEM electrolyzers me me. Cov hlwb tuaj yeem tsim tau raws li qhov yuav tsum tau ua, txo cov nqi ntawm cov hlau muaj txiaj ntsig thiab ua kom lub zog ua haujlwm. Lub ntsiab kom zoo dua ntawm PEM electrolyzer yog tias hydrogen ntau lawm hloov yuav luag synchronously nrog lub zog muab, uas yog haum rau kev hloov ntawm hydrogen thov. Hoeller hlwb teb rau 0-100% kev hloov pauv hloov hauv vib nas this. Hoeller's patented thev naus laus zis tab tom kuaj xyuas qhov tseeb, thiab qhov chaw sim yuav tsim los ntawm qhov kawg ntawm 2020.
Lub purity ntawm hydrogen tsim los ntawm PEM hlwb tuaj yeem siab li 99.99%, uas yog siab dua li ntawm alkaline hlwb. Tsis tas li ntawd, qhov tsis tshua muaj roj permeability ntawm cov ntaub ntawv polymer txo qhov kev pheej hmoo ntawm kev tsim cov nplaim hluav taws sib xyaw, tso cai rau cov electrolyzer ua haujlwm ntawm qhov tsis tshua muaj siab tam sim no. Lub conductivity ntawm cov dej nkag mus rau lub electrolyzer yuav tsum tsawg tshaj li 1S / cm2. Vim hais tias kev thauj mus los ntawm proton hla lub polymer membrane teb sai sai rau lub zog hloov pauv, PEM hlwb tuaj yeem ua haujlwm hauv cov khoom siv hluav taws xob sib txawv. Txawm hais tias PEM cell tau ua lag luam, nws muaj qee qhov tsis zoo, feem ntau yog tus nqi peev thiab cov nqi siab ntawm ob qho tib si membrane thiab cov hlau muaj txiaj ntsig raws li cov electrodes. Tsis tas li ntawd, lub neej kev pab cuam ntawm PEM hlwb yog luv dua li ntawm alkaline hlwb. Nyob rau hauv lub neej yav tom ntej, lub peev xwm ntawm PEM cell los tsim hydrogen yuav tsum tau txhim kho zoo heev.
Post lub sij hawm: Feb-02-2023