I-Vanadium Redox Flow Battery-SECONDARY AMABHETRI – IZINHLELO ZOKUFLOW |Uhlolojikelele

Ibhethri le-Vanadium Redox Flow

AMABHATHRI ESIBILI – Uhlolojikelele LweZINHLELO ZOKUTHUTHUMA

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 nokuphila okulinganiselwe kolwelwesi lwe-ion-exchange.