Vanadium Redox Gudun Baturi
BATIRI NA BIYU - Bayanin TSORON GUDA
daga MJ Watt-Smith, … FC Walsh, a cikin Encyclopedia of Electrochemical Power Sources
vanadium -vanadium redox kwarara baturi (VRB)M. Skyllas-Kazacos da abokan aiki ne suka yi majagaba a cikin 1983 a Jami'ar New South Wales, Australia. Kungiyoyi da dama ne ke haɓaka fasahar yanzu da suka haɗa da E-Fuel Technology Ltd a Burtaniya da VRB Power Systems Inc. a Kanada. Wani fasali na VRB shine cewa yana amfani da sinadarai iri ɗaya a cikin dukaanode da kuma cathode electrolytes. VRB tana amfani da jahohin oxidation guda huɗu na vanadium, kuma da kyau akwai redox biyu na vanadium a cikin kowane rabin tantanin halitta. Ana amfani da ma'aurata V (II) - (III) da V (IV) - (V) a cikin raƙuman rabi-rabi mai kyau da kuma tabbatacce, bi da bi. Yawanci, mai tallafawa electrolyte shine sulfuric acid (~ 2-4 mol dm-3) kuma ƙwayar vanadium yana cikin kewayon 1-2 mol dm-3.
Ana nuna halayen caji-fitarwa a cikin VRB a cikin halayen [I]–[III]. Yayin aiki, ƙarfin wutar lantarki na buɗewa shine yawanci 1.4 V a 50% na caji da kuma 1.6 V a 100% na caji. Na'urorin lantarki da ake amfani da su a cikin VRBs yawancicarbon feelsko wasu porous, nau'ikan carbon mai girma uku. Batura masu ƙananan ƙarfi sun yi amfani da carbon-polymer composite electrodes.
Babban fa'idar VRB shine cewa yin amfani da nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan rabin-rabi yana taimakawa wajen guje wa matsalolin da ke tattare da giciye-ɓangarorin masu amfani da rabin tantanin halitta yayin amfani na dogon lokaci. Electrolyte yana da tsayin rayuwa kuma an rage matsalolin zubar da shara. Har ila yau, VRB yana ba da ingantaccen ƙarfin makamashi (<90% a cikin manyan shigarwa), ƙananan farashi don manyan damar ajiya, haɓaka tsarin da ake ciki, da kuma tsawon rayuwa. Iyakoki masu yuwuwa sun haɗa da ɗan ƙaramin babban farashi na tushen electrolytes na vanadium tare da farashi da iyakacin rayuwa na membrane musayar ion.
Lokacin aikawa: Mayu-31-2021