ʻO Vanadium Redox Flow Battery
NĀ PĀNUI KĀLUA – NĀ KĀNĀWAI KĀWAI
mai MJ Watt-Smith, … FC Walsh, ma Encyclopedia of Electrochemical Power Sources
ʻO ka vanadium-vanadium redox kahe kahe (VRB)ua paionia nui ʻia e M. Skyllas-Kazacos a me nā hoa hana ma 1983 ma ke Kulanui o New South Wales, Australia.Ke hoʻomohala ʻia nei ka ʻenehana e kekahi mau hui e like me E-Fuel Technology Ltd ma United Kingdom a me VRB Power Systems Inc. ma Kanada.ʻO kahi hiʻohiʻona o ka VRB ʻo ia ka hoʻohana ʻana i ka mea kemika like i loko o kaanode a me ka cathode electrolytes.Hoʻohana ka VRB i nā mokuʻāina hoʻomake ʻehā o ka vanadium, a ʻoi aku ka maikaʻi o hoʻokahi ʻelua redox o vanadium i loko o kēlā me kēia hapalua-cell.Hoʻohana ʻia nā hui V(II)–(III) a me V(IV)–(V) i loko o nā pūnaʻi hapa maikaʻi ʻole a maikaʻi.ʻO ka mea maʻamau, ʻo ka electrolyte kākoʻo he sulfuric acid (∼2–4 mol dm−3) a ʻo ka ʻike vanadium aia ma ka laulā o 1-2 mol dm−3.
Hōʻike ʻia ka hoʻopiʻi-hoʻokuʻu ʻana i loko o ka VRB i nā hopena [I]-[III].I ka wā o ka hana, ʻo ka volta kaapuni hāmama he 1.4 V ma 50% state-of-charge a me 1.6 V ma 100% state-of-charge.ʻO nā electrodes i hoʻohana ʻia i nā VRB maʻamaukalapona kalaponaa i ʻole nā ʻano kalapona porous ʻekolu-dimensional.Ua hoʻohana nā ʻuala o ka mana haʻahaʻa i ka carbon-polymer composite electrodes.
ʻO kahi pōmaikaʻi nui o ka VRB ʻo ia ka hoʻohana ʻana i ka mea like i loko o nā ʻāpana hapa ʻelua e kōkua i ka pale ʻana i nā pilikia e pili ana i ka hoʻopaʻa ʻia ʻana o nā electrolytes hapalua ʻelua i ka wā hoʻohana lōʻihi.He lōʻihi ke ola o ka electrolyte a hoʻemi ʻia nā pilikia hoʻolei ʻōpala.Hāʻawi pū ka VRB i ka ikaika o ka ikehu kiʻekiʻe (<90% i nā hoʻonohonoho nui), ke kumu kūʻai haʻahaʻa no ka hiki ke mālama nui, hiki ke hoʻonui i nā ʻōnaehana i kēia manawa, a me ke ola pōʻai lōʻihi.ʻO nā palena hiki ke loaʻa ke kumu kūʻai kiʻekiʻe o ka vanadium-based electrolytes me ke kumukūʻai a me ka palena o ke ola o ka membrane hoʻololi ion.
Ka manawa hoʻouna: Mei-31-2021