Batirin Vanadium Redox Flow
BATIRI NA BIYU - Tsarin Gudawa Bayani
daga MJ Watt-Smith, … FC Walsh, a cikin Encyclopedia of Electrochemical Power Sources
Vanadium -Batirin kwararar vanadium redox (VRB)M. Skyllas-Kazacos da abokan aikinsa ne suka fara wannan fasaha a shekarar 1983 a Jami'ar New South Wales, Ostiraliya. Yanzu haka ana ci gaba da haɓaka fasahar ta hanyar ƙungiyoyi da dama, ciki har da E-Fuel Technology Ltd a Burtaniya da VRB Power Systems Inc. a Kanada. Wani fasali na musamman na VRB shine yana amfani da sinadarai iri ɗaya a duka biyun.anode da cathode electrolytes. VRB yana amfani da yanayin iskar shaka guda huɗu na vanadium, kuma mafi kyau akwai redox biyu na vanadium a cikin kowace rabin tantanin halitta. Ana amfani da ma'auratan V(II)–(III) da V(IV)–(V) a cikin rabin tantanin halitta marasa kyau da masu kyau, bi da bi. Yawanci, electrolyte mai goyan baya shine sulfuric acid (∼2–4 mol dm−3) kuma yawan vanadium yana cikin kewayon 1–2 mol dm−3.
Ana nuna halayen caji da fitar da ruwa a cikin VRB a cikin halayen [I]–[III]. A lokacin aiki, ƙarfin wutar lantarki na buɗewa yawanci shine 1.4 V a yanayin caji na 50% da kuma 1.6 V a yanayin caji na 100%. Electrodes da ake amfani da su a cikin VRBs yawanci ana amfani da su nefelts na carbonko wasu nau'ikan carbon masu ramuka, masu girma uku. Batirin da ke da ƙarancin ƙarfi sun yi amfani da na'urorin lantarki masu haɗakar carbon-polymer.
Babban fa'idar VRB ita ce amfani da abu ɗaya a cikin rabin ƙwayoyin halitta yana taimakawa wajen guje wa matsalolin da ke tattare da gurɓatar ƙwayoyin biyu na rabin ƙwayoyin halitta yayin amfani na dogon lokaci. Elektrolyt ɗin yana da tsawon rai kuma ana rage matsalolin zubar da shara. VRB kuma yana ba da ingantaccen makamashi mai yawa (<90% a cikin manyan shigarwa), ƙarancin farashi don manyan damar ajiya, haɓaka tsarin da ke akwai, da tsawon lokacin zagayowar. Iyakoki masu yuwuwa sun haɗa da babban farashin jari na electrolytes na tushen vanadium tare da farashi da iyakataccen tsawon lokacin membrane na musayar ion.
Lokacin Saƙo: Mayu-31-2021