Kwisakhiwo sekristale seLifepo4, iathomu yeoksijini ifakwe ngokuqinileyo kumaqela amathandathu.I-PO43-tetraonal kunye ne-FEO6 ingwane zenza i-skeleton yendawo yekristale.I-LI kunye ne-Fe zithatha isithuba phakathi kwe-octopus, kwaye i-P ithatha i-tetraonal gap.I-FE ithatha indawo yekona eqhelekileyo yengwane, kwaye i-li ithatha icala eliqhelekileyo le-octopus.I-octopus ye-FEO6 idibaniswe komnye nomnye kwi-BC surface ye-crystal, kunye nesakhiwo se-octopus ye-Li6 kwi-B -axis directional idibaniswe kwi-chain structure.I-1 Feo6 ingwane kunye ne-2 LiO6 ingwane kunye ne-1 PO43-tetraonal co-edge.
Ngenxa yokungaqhubeki kwe-FEO6 co-edge octopus network, i-electronic conductivity ayinakwenziwa;ngelo xesha, i-PO43-tetraon inqunyelwe kwinguqu yevolumu ye-lattice, echaphazela ukuchithwa kwamanzi kunye nokusabalalisa i-electronic diffusion ye-LI +, ekhokelela kwi-electronic conductivity kunye ne-ion diffusion ye-LIFEPO4 yezinto eziphathekayo eziphathekayo kunye nokusabalalisa i-ion.Ukusebenza kakuhle kuphantsi kakhulu.
Ithiyori kunebhetri ye-Lifepo4 iphezulu (malunga ne-170mAh / g), kunye neqonga lokukhutshwa yi-3.4V.I-LI + Hlaziya amandla phakathi kwe-bipolar elungileyo kunye nengalunganga ukuphumeza ukutshaja kunye nokukhutshwa, kunye nokusabela kwe-oxidation kwenzeka ngexesha lokutshaja.I-Li + iphuma kwi-pole positive, ifakwe kwisibonda esibi nge-electrolyte, kwaye intsimbi yatshintsha ukusuka kwi-Fe2 + ukuya kwi-Fe3 +, kwaye i-oxidation reaction yenzeke.
Icala lasekhohlo le-lithium yentsimbi ye-phosphate ibhetri yi-electrode efanelekileyo eyenziwe yi-lifpo4 impahla yesakhiwo somnquma, exhunywe kwi-electrode efanelekileyo yebhetri kunye ne-aluminium foil.Ngasekunene yi-electrode engalunganga yebhetri eyenziwe ngekhabhoni (graphite), edityaniswe ne-electrode engalunganga yefoyile yobhedu enebhetri.Embindini kukho i-diaphragm yepolymer, eyahlula i-electrode efanelekileyo kwi-electrode engalunganga.I-lithium ion ingaba yi-electron nge-diaphragm kwaye ayikwazi ukudlula i-diaphragm.Ibhetri ifakwe i-electrolytes, kwaye ibhetri ivalwe ngeqokobhe lentsimbi.
Impendulo yokutshaja kunye nokukhutshwa kweebhetri ze-lithium iron phosphate iphakathi kwe-Lifepo4 kunye ne-FEPO4.Ngethuba lenkqubo yokutshaja, i-LIFEPO4 yahlukana ngokuthe ngcembe kwi-lithium ion ukwenza i-FEPO4.Ngethuba lenkqubo yokukhupha, i-lithium ion ifakwe kwi-FEPO4 ukwenza i-LIFEPO4.
Ngexesha lokutshaja kwebhetri, i-ion ze-lithium zifuduka zisuka kwiikristale ze-iron phosphate ziye kumphezulu wekristale.Ngaphantsi kwefuthe lentsimi yombane, faka i-electrolyte, emva koko udlule kwi-diaphragm, uze ufudukele kumphezulu wekristale yegraphite nge-electrolyte, uze ufakwe kwi-graphite lattice.
Kwangaxeshanye, i-electronics conductive aluminium foil collector electrode igeleza isiya kwi-electrode elungileyo, kunye nomqokeleli wefoyile yobhedu equkuqela endlebeni yesibonda, ikholamu yebhetri eqinisekileyo, isekethe yangaphandle, ikholamu ye-electrode engalunganga, kunye neendlebe ezingalunganga kwi-electrode engalunganga yebhetri, kwaye Emva koko uqukuqela ukuya kwi-litteria negative electrode, Yenza i-electrode enegetive charge ukuze ibhalansi.I-Lithium ion iguqulwa ibe yi-iron phosphate emva kokuba i-lithium iron phosphate dehydrated.
Xa ibhetri ikhutshwa, i-ion ze-lithium ziyasuswa kwikristale yegraphite, zingene kwi-electrolyte, emva koko zidlule kwi-diaphragm, zifudukele kumphezulu we-lithium iron phosphate ngokusebenzisa i-electrolyte, kwaye emva koko uyifake kwakhona kwi-latch ye-lithium. iphosphate yentsimbi.
Kwangaxeshanye, umqokeleli wefoyile yobhedu uqukuqela ukuya kwi-elektroniki engalunganga ye-meridian ye-elektroniki, ngomqokeleli wefoyile ye-aluminium yefoyile ye-aluminiyam yendlebe emhlophe, ikholamu engalunganga yebhetri, isekethe yangaphandle, ikholamu yesibonda esilungileyo, kunye indlebe entle emhlophe kwibhetri.Iipali ze-lithium positive zenza intlawulo echanekileyo ifikelele kwibhalansi.I-Lithium ion ifakwe emva kweekristale ze-iron phosphate, kwaye i-iron phosphate iguqulwa ibe yi-lithium iron phosphate.
Ixesha lokuposa: Aug-07-2023