Zisebenza njani iibhetri zeRedox Flow

Zisebenza njani iibhetri zeRedox Flow

Ukwahlulwa kwamandla kunye namandla ngumahluko ophambili we-RFBs, xa kuthelekiswa nezinyeiinkqubo zokugcina i-electrochemical. Njengoko kuchazwe ngasentla, amandla enkqubo agcinwe kumthamo we-electrolyte, enokuthi ibe lula kwaye ibe noqoqosho kuluhlu lwee-kilowatt-iiyure ukuya kumashumi eemegawatt-iiyure, kuxhomekeke kubungakanani beeyure.iitanki zokugcina. Umthamo wamandla wenkqubo uchongwa ngubungakanani be-stack yeeseli ze-electrochemical. Ubungakanani be-electrolyte equkuqelayo kwi-electrochemical stack nangawuphi na umzuzu ayifane ibe ngaphezu kweepesenti ezimbalwa zexabiso lilonke le-electrolyte ekhoyo (kwimilinganiselo yamandla ehambelana nokukhutshwa kumandla okulinganisa iiyure ezimbini ukuya kwezisibhozo). Ukuhamba kunokumiswa ngokulula ngexesha lemeko yesiphoso. Ngenxa yoko, ukuba semngciphekweni kwenkqubo ekukhutshweni kwamandla okungalawulekiyo kwimeko yee-RFBs kuthintelwe yinkqubo yolwakhiwo ukuya kwiipesenti ezimbalwa zamandla ewonke agciniweyo. Eli nqaku lihluke ngokupakishwayo, i-architectures yokugcina iiseli ezidibeneyo (i-lead-acid, i-NAS, i-Li Ion), apho amandla apheleleyo enkqubo edibaniswe ngamaxesha onke kwaye atholakalayo ukukhutshwa.

Ukwahlulwa kwamandla kunye namandla kukwabonelela ngobubhetyebhetye boyilo ekusetyenzisweni kwee-RFBs. Ikhono lamandla (ubungakanani bestakhi) bunokwenziwa ngokuthe ngqo kumthwalo onxulumeneyo okanye i-asethi yokuvelisa. Ikhono lokugcina (ubungakanani beetanki zokugcina) linokuzimela ngokuzimeleyo kwimfuno yokugcina amandla yesicelo esithile. Ngale ndlela, ii-RFBs zinokubonelela ngokwezoqoqosho ngenkqubo yokugcina ephuculweyo kwisicelo ngasinye. Ngokwahlukileyo, umlinganiselo wamandla kumandla umiselwe iiseli ezidityanisiweyo ngexesha loyilo kunye nokwenziwa kweeseli. Uqoqosho lwesikali kwimveliso yeeseli lunciphisa inani elibonakalayo loyilo lweeseli ezahlukeneyo ezikhoyo. Yiyo loo nto, izicelo zokugcina ezineeseli ezidityanisiweyo zihlala ziba namandla agqithisileyo okanye amandla ombane.

Ii-RFBs zinokwahlulwa zibe ngamacandelo amabini: 1) yinyaniiibhetri zokuhamba kwe-redox, apho zonke iintlobo zeekhemikhali ezisebenzayo ekugcineni amandla zichithwa ngokupheleleyo kwisisombululo ngamaxesha onke; kunye ne-2) iibhetri ze-hybrid redox flow, apho ubuncinci bekhemikhali ethile ifakwe njengento eqinileyo kwiiseli ze-electrochemical ngexesha lokuhlawula. Imizekelo yee-RFB zokwenyani ibandakanyai-vanadium-vanadium kunye ne-iron-chromium iinkqubo. Imizekelo yee-RFB ezixubileyo ziquka i-zinc-bromine kunye ne-zinc-chlorine systems.