Ibhethri le-Vanadium Redox Flow, igama eligcwele i-Vanadium REDOX flow battery (VRB), iwuhlobo lwebhethri le-REDOX lapho izinto ezisebenzayo zizungeza kusimo soketshezi. Amabhethri e-Iron-chromium REDOX abekhona kusukela ngawo-1960, kodwa amabhethri e-vanadium REDOX ahlongozwa ngo-1985 nguMarria Kacos eNyuvesi yaseNew South Wales e-Australia, futhi ngemva kweminyaka engaphezu kwamashumi amabili yocwaningo nentuthuko, ubuchwepheshe buseduze. lokuvuthwa. E-Japan, amabhethri e-vanadium ohlobo olungaguquki (ngokungafani ne-EV) eziteshi zikagesi ezilawula inani eliphakeme kanye nesitoreji samandla omoya athuthuka ngokushesha, futhi amasistimu okugcina amandla ebhethri e-vanadium enamandla amakhulu asetshenzisiwe futhi athengiswa.
Amandla kagesi weibhethri ye-vanadiumigcinwa njengamandla amakhemikhali ku-sulfuric acid electrolyte ye-vanadium ions yezifunda ezahlukene ze-valence, kanyei-electrolytic hydraulicukucindezela kufakwa enqwabeni yebhethri yiphampu yangaphandle. Ngaphansi kwesenzo samandla ayimishini, ingcindezi ye-electrolytic hydraulic izungeza kumathangi ahlukene okugcina uketshezi kanye neluphu evaliwe yebhethri elinguhhafu. I-membrane yokushintshanisa i-Proton isetshenziswa njenge-diaphragm yephakethe lebhethri, futhi isisombululo se-electrolyte sigeleza ngokuhambisana nendawo ye-electrode bese kwenzeka ukusabela kwe-electrochemical. Amandla amakhemikhali agcinwe esixazululweni aguqulwa abe amandla kagesi ngokuqoqa futhi aqhube okwamanje ngokusebenzisa amapuleti e-electrode kabili. Le nqubo yokusabela ebuyiseleka emuva yenza ibhethri le-vanadium lishajwe, likhishwe futhi lishajwe kabusha ngokushelela. I-electrolyte e-Positive iqukethe i-V(Ⅴ) ne-V(Ⅳ) isisombululo se-ionic, i-electrolyte eyinegethivu iqukethe i-V(Ⅲ) ne-V(Ⅱ) isisombululo se-ionic, ukushaja ibhethri, izinto ezibonakalayo ze-V(Ⅴ) i-ionic solution, i-V(Ⅱ) ionic isixazululo, ukuchithwa kwebhethri, i-electrode ephozithivu nenegethivu ngokulandelana kwe-V(Ⅳ) kanye ne-V(Ⅲ) isisombululo se-ionic, ibhethri yangaphakathi nge-H+ conduction. I-V(Ⅴ) kanye ne-V(Ⅳ) ion zikhona ngendlela ye-VO2+ ion kanye ne-VO2+ ion ngokulandelana kwe-asidi, ngakho ukusabela okuhle nokubi kwamabhethri e-vanadium kungavezwa kanje:
I-electrode enhle ngesikhathi sokushaja: VO2++H2O→VO2++2H++e-
I-electrode engalungile uma ishaja: V3++ e-→V2+
I-anode yokukhipha: VO2++2H++e-→VO2++H2O
I-electrode enegethivu ekhiphayo: V2+→V3++ e-
Isetshenziswa njengesistimu yokugcina amandla,amabhethri e-vanadiumbabe nezici ezilandelayo
I-1, amandla okukhipha ebhethri ancike kusayizi wenqwaba yebhethri, umthamo wokugcina amandla uncike endaweni yokugcina i-electrolyte nokugxila, ngakho-ke ukwakheka kwayo kuvumelana nezimo kakhulu, lapho amandla okukhiphayo eqinisekile, ukwandisa umthamo wokugcina amandla, njengoba inqobo nje uma ukwandisa umthamo wethangi lokugcina i-electrolyte noma ukuthuthukisa ukuhlushwa kwe-electrolyte;
2, into esebenzayo yebhethri ye-vanadium ikhona oketshezini, i-ion ye-electrolyte iyodwa kuphelai-vanadium ion, ngakho-ke akukho ukuguqulwa kwesigaba samanye amabhethri lapho ishaja futhi ikhipha, ibhethri linokuphila kwesevisi ende;
I-3, ukushaja, ukusebenza kokukhipha kuhle, kungaba ukukhipha okujulile ngaphandle kokulimaza ibhethri;
4. Ukuzikhipha okuphansi, lapho uhlelo lusemodini evaliwe, i-electrolyte ethangini ayinayo into yokuzikhulula;
I-5, inkululeko yendawo yebhethri ye-vanadium, uhlelo lungaba ukusebenza okuzenzakalelayo okuvaliwe okuzenzakalelayo, akukho ukungcola, ukugcinwa okulula, izindleko eziphansi zokusebenza;
I-6, isistimu yebhethri ayinakho ukuqhuma okungenzeka noma ingozi yomlilo, ukuphepha okuphezulu;
I-7, izingxenye zebhethri ziyizinto ezishibhile kakhulu zekhabhoni, amapulasitiki obunjiniyela, imithombo yezinto ezibonakalayo icebile, kulula ukuyigaya kabusha, ayidingi izinsimbi eziyigugu njenge-catalyst electrode;
8, ukusebenza kahle kwamandla okuphezulu, kufika ku-75% ~ 80%, ukusebenza kwezindleko eziphezulu kakhulu;
9. Isivinini sokuqalisa esisheshayo, uma i-reactor igcwele i-electrolyte, ingaqalwa ngaphakathi kwe-2min, futhi ukushaja nokukhipha isimo sokushintsha kudinga kuphela ama-0.02s ngesikhathi sokusebenza.
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