Ibhetri yeVanadium Redox Flow
Iibhetri zesiBini – IINKQUBO ZOKUGQIBELA IMVELISO Isishwankathelo
evela ku-MJ Watt-Smith, ... FC Walsh, kwi-Encyclopedia of Electrochemical Power Sources
Ivanadium–ibhetri yokuhamba kwe-vanadium redox (VRB)yaqalwa kakhulu nguM. Skyllas-Kazacos kunye nabantu asebenza nabo ngo-1983 kwiYunivesithi yaseNew South Wales, eOstreliya. Le teknoloji ngoku iphuhliswa yimibutho eliqela kuquka i-E-Fuel Technology Ltd e-United Kingdom kunye ne-VRB Power Systems Inc. eKhanada. Uphawu oluthile lwe-VRB kukuba isebenzisa into efanayo yekhemikhali kuzo zombinii-anode kunye ne-cathode electrolytes. I-VRB isebenzisa iimeko ezine ze-oxidation zevanadium, kwaye ngokufanelekileyo kukho isibini esinye se-redox sevanadium kwisiqingatha seseli ngasinye. Isibini se-V(II)–(III) kunye ne-V(IV)–(V) zisetyenziswa kwisiqingatha seseli esingalunganga nesilungileyo, ngokwahlukeneyo. Ngokwesiqhelo, i-electrolyte exhasayo yi-sulfuric acid (∼2–4 mol dm−3) kwaye uxinzelelo lwe-vanadium lukuluhlu lwe-1–2 mol dm−3.
Iimpendulo zokutshaja-ukukhupha amandla kwi-VRB ziboniswa kwiimpendulo [I]–[III]. Ngexesha lokusebenza, i-voltage yesekethe evulekileyo idla ngokuba yi-1.4 V kwi-50% state-of-charge kunye ne-1.6 V kwi-100% state-of-charge. Ii-electrodes ezisetyenziswa kwi-VRB zihlala zinjalo.iifelti zekhabhoniokanye ezinye iintlobo zekhabhoni ezinemingxuma, ezinemilinganiselo emithathu. Iibhetri zamandla aphantsi zisebenzise ii-electrode zekhabhoni-polymer ezidityanisiweyo.
Inzuzo enkulu yeVRB kukuba ukusetyenziswa kwento enye kuzo zombini iiseli ezizisiqingatha kunceda ukuphepha iingxaki ezinxulumene nokungcoliswa kwee-electrolyte ezimbini ezizisiqingatha ngexesha lokusetyenziswa ixesha elide. I-electrolyte ihlala ixesha elide kwaye imiba yokulahla inkunkuma iyancitshiswa. I-VRB ikwabonelela ngokusebenza kakuhle kwamandla (<90% kwiindawo ezinkulu zokufakelwa), iindleko eziphantsi kwizakhono zokugcina ezinkulu, ukuphuculwa kweenkqubo ezikhoyo, kunye nobomi bomjikelo omde. Imida enokubakho ibandakanya iindleko ezinkulu ze-electrolytes ezisekelwe kwi-vanadium kunye neendleko kunye nobomi obulinganiselweyo be-membrane ye-ion-exchange.
Ixesha lokuthumela: Meyi-31-2021