Ka sebopeho sa kristale sa Lifepo4, athomo ea oksijene e kentsoe ka thata ka mekha e tšeletseng.PO43-tetraonal le FEO6 octopus li theha marapo a sebaka sa kristale.LI le Fe li nka lekhalo pakeng tsa octopus, 'me P e nka lekhalo la tetraonal.FE e lula sebakeng se tloaelehileng sa octopus, 'me li e nka lehlakore le tloaelehileng la octopus.Octopus ea FEO6 e hokahane ho e mong holim'a BC holim'a kristale, 'me sebopeho sa octopus ea Li6 ka tataiso ea B -axis e hokahane le sebopeho sa ketane.1 Feo6 octopus le 2 LiO6 octopus le 1 PO43-tetraonal co-edge.
Ka lebaka la ho se tsoele pele ha marang-rang a FEO6 co-edge octopus, conductivity ea elektronike e ke ke ea thehoa;ka nako e ts'oanang, PO43-tetraon e lekanyelitsoe ho fetoha ha molumo oa lesela, e leng se amang ho felloa ke metsi le ho phatlalatsoa ha elektronike ea LI +, e lebisang ho conductivity ea elektronike le ion diffusion ea LIFEPO4 lintho tse bonahalang tse ntle le ho ata ha ion.Ho sebetsa hantle ho tlase haholo.
Theoretical ho feta betri ea Lifepo4 e phahame (hoo e ka bang 170mAh / g), mme sethala sa ho lahla ke 3.4V.LI + Retinate matla lipakeng tsa "bipolar" tse ntle le tse mpe ho kenya ts'ebetsong ho tjhaja le ho tsoa, 'me karabelo ea oxidation e etsahala nakong ea ho tjhaja.Li + e tsamaea ka ntle ho palo e ntle, e kenngoa ka palo e mpe ka electrolyte, 'me tšepe e fetohile ho tloha Fe2 + ho ea ho Fe3 +, 'me karabelo ea oxidation e etsahetse.
Lehlakore le letšehali la betri ea lithium iron phosphate ke electrode e ntle e entsoeng ka thepa ea lifpo4 ea mohaho oa mohloaare, e hokahaneng le electrode e ntle ea betri e nang le foil ea aluminium.Ka ho le letona ke electrode e mpe ea betri e entsoeng ka carbon (graphite), e amanang le electrode e mpe ea foil ea koporo e nang le betri.Bohareng ho na le diaphragm ea polymer, e arolang electrode e ntle ho electrode e mpe.Li-ion tsa lithium e ka ba lielektrone ka diaphragm 'me ha li khone ho fetisa diaphragm.Betri e tlatsitsoe ka li-electrolyte, 'me betri e kentsoe ka khetla ea tšepe.
Karabelo ea ho tjhaja le ho ntsha dibetri tsa lithium iron phosphate e pakeng tsa Lifepo4 le FEPO4.Nakong ea ts'ebetso ea ho tjhaja, LIFEPO4 e ile ea arohana butle-butle le lithium ion ho theha FEPO4.Nakong ea ts'ebetso ea ho ntša, lithium ion e kentse FEPO4 ho theha LIFEPO4.
Nakong ea ho tjhaja betri, li-ion tsa lithium li falla ho tloha likristale tsa phosphate tsa tšepe ho ea holim'a kristale.Tlas'a tšusumetso ea tšimo ea motlakase, kenya electrolyte, ebe u feta ka har'a diaphragm, ebe u fallela holim'a kristale ea graphite ka electrolyte, ebe e kenngoa ka har'a graphite lattice.
Ka nako e ts'oanang, motlakase oa motlakase oa motlakase oa aluminium o phalla ho electrode e ntle, 'me moqokelli oa koporo oa koporo o phallang ka tsebe, mohala o motle oa betri, potoloho e ka ntle, mohala o fosahetseng oa electrode, le litsebe tse mpe ho electrode e mpe ea betri, le ebe e phalla ho litteria negative electrode , Etsa hore tefiso ea electrode e mpe ho leka-lekanya.Li-ion tsa lithium li fetoloa phosphate ea tšepe ka mor'a hore lithium iron phosphate e felisoe ke metsi.
Ha betri e tsoa, li-ion tsa lithium li tlosoa kristale ea graphite, li kene ka electrolyte, ebe li feta diaphragm, li fallela holim'a lithium iron phosphate ka electrolyte, ebe li e kenya hape ka har'a latch ea lithium. tšepe phosphate.
Ka nako e ts'oanang, 'mokelli oa foil oa koporo o phallela ho elektronike e fosahetseng ea meridian ea elektronike, ka moqokelli oa aluminium oa foil ea tsebe ea polar, mohala o fosahetseng oa betri, potoloho e ka ntle, mohala o motle, le tsebe e polar ho betri.Lipalo tse ntle tsa lithium li etsa hore tefiso e ntle e fihle ho leka-lekana.Li-ion tsa lithium li kenngoa ka mor'a likristale tsa tšepe tsa phosphate, 'me phosphate ea tšepe e fetoloa ho ba lithium iron phosphate.
Nako ea poso: Aug-07-2023