Mabatire a Vanadium Redox Flow - Mabatire achiwiri - Machitidwe oyenda | Chidule

Batri Yoyenda ya Vanadium Redox

MABATIRI ACHIPIRI – MA FLOW SYSTEMS Chidule

kuchokera kwa MJ Watt-Smith, ... FC Walsh, mu Encyclopedia of Electrochemical Power Sources

Vanadium -batire ya vanadium redox flow (VRB)idayambitsidwa kwambiri ndi M. Skyllas-Kazacos ndi anzake ogwira nawo ntchito mu 1983 ku University of New South Wales, Australia. Ukadaulowu tsopano ukupangidwa ndi mabungwe angapo kuphatikiza E-Fuel Technology Ltd ku United Kingdom ndi VRB Power Systems Inc. ku Canada. Chinthu china chapadera cha VRB ndichakuti imagwiritsa ntchito chinthu chomwecho cha mankhwala m'mafakitale onse awiri.anode ndi ma electrolyte a cathodeVRB imagwiritsa ntchito mitundu inayi ya okosijeni ya vanadium, ndipo ndibwino kuti pakhale gulu limodzi la redox la vanadium mu theka lililonse la selo. Ma V(II)–(III) ndi V(IV)–(V) amagwiritsidwa ntchito mu maselo a theka la negative ndi positive, motsatana. Kawirikawiri, electrolyte yothandizira ndi sulfuric acid (∼2–4 mol dm−3) ndipo kuchuluka kwa vanadium kumakhala pakati pa 1–2 mol dm−3.

Mayankho a charge-discharge mu VRB amawonetsedwa mu ma reaction [I]–[III]. Pa nthawi yogwira ntchito, voltage yotseguka nthawi zambiri imakhala 1.4 V pa 50% state-of-charge ndi 1.6 V pa 100% state-of-charge. Ma electrode omwe amagwiritsidwa ntchito mu VRB nthawi zambiri amakhalama felt a kabonikapena mitundu ina ya kaboni yokhala ndi mabowo atatu. Mabatire a mphamvu zochepa agwiritsa ntchito ma electrode ophatikizika a kaboni-polima.

Ubwino waukulu wa VRB ndikuti kugwiritsa ntchito chinthu chomwecho m'maselo onse awiri kumathandiza kupewa mavuto okhudzana ndi kuipitsidwa kwa ma electrolyte awiri a theka la maselo panthawi yogwiritsidwa ntchito kwa nthawi yayitali. Electrolyte imakhala ndi moyo wautali ndipo mavuto otaya zinyalala amachepetsedwa. VRB imaperekanso mphamvu zambiri (<90% m'mayikidwe akuluakulu), mtengo wotsika wa malo osungiramo zinthu akuluakulu, kukweza makina omwe alipo, komanso moyo wautali. Zolepheretsa zomwe zingachitike zimaphatikizapo mtengo wapamwamba wa ma electrolyte okhala ndi vanadium pamodzi ndi mtengo ndi moyo wochepa wa nembanemba yosinthana ndi ion.