Ibhethri le-Vanadium Redox Flow
AMABHATHRI ESIBILI – Uhlolojikelele LweZINHLELO ZOKUGUBHA
kusukela ku-MJ Watt-Smith, … FC Walsh, ku-Encyclopedia of Electrochemical Power Sources
I-vanadium -i-vanadium redox flow battery (VRB)laliphayona kakhulu ngu-M. Skyllas-Kazacos kanye nozakwabo ngo-1983 eNyuvesi yaseNew South Wales, e-Australia. Ubuchwepheshe manje sebuthuthukiswa izinhlangano ezimbalwa ezihlanganisa i-E-Fuel Technology Ltd e-United Kingdom kanye ne-VRB Power Systems Inc. yaseCanada. Isici esithile se-VRB ukuthi isebenzisa ikhemikhali efanayo kuzo zombilii-anode kanye ne-cathode electrolyte. I-VRB isebenzisa izifunda ezine ze-oxidation ze-vanadium, futhi kuhle kunembhangqwana eyodwa ye-redox ye-vanadium kuhhafu yeseli ngayinye. Imibhangqwana engu-V(II)–(III) kanye ne-V(IV)–(V) isetshenziswa kuma-half-cells anegethivu nephozithivu, ngokulandelana. Ngokuvamile, i-electrolyte esekelayo i-sulfuric acid (∼2-4 mol dm−3) futhi ukugxila kwe-vanadium ku-range ye-1-2 mol dm-3.
Ukusabela kokushaja–ukukhipha ku-VRB kuboniswa ekuphenduleni [I]–[III]. Ngesikhathi sokusebenza, i-voltage ye-open-circuit ngokuvamile i-1.4 V ku-50% ye-state-of-charge kanye ne-1.6 V ku-100% ye-state-of-charge. Ama-electrode asetshenziswa kuma-VRB ajwayelekileizinzwa ze-carbonnoma ezinye izinhlobo zekhabhoni ezinezimbotshana ezinezinhlangothi ezintathu. Amabhethri anamandla aphansi asebenzise ama-electrode ayinhlanganisela ye-carbon-polymer.
Inzuzo enkulu ye-VRB ukuthi ukusetshenziswa kwesici esifanayo kuwo womabili amangqamuzana angama-half-cell kusiza ukugwema izinkinga ezihambisana nokungcoliswa okuphambene kwama-electrolyte angama-half-cell ngesikhathi sokusetshenziswa isikhathi eside. I-electrolyte inesikhathi eside sempilo futhi izindaba zokulahlwa kwemfucuza ziyancishiswa. I-VRB iphinde inikeze ukusebenza kahle kwamandla okuphezulu (<90% ekufakweni okukhulu), izindleko eziphansi zamandla amakhulu okugcina, ukuthuthukiswa kwamasistimu akhona, nempilo yomjikelezo omude. Imikhawulo engaba khona ihlanganisa izindleko ezinkulu kakhulu zekhephithali zama-electrolyte asekelwe ku-vanadium kanye nezindleko nempilo elinganiselwe yolwelwesi lwe-ion-exchange.
Isikhathi sokuthumela: May-31-2021