Kusakhiwo sekristalu se-Lifepo4, i-athomu yomoya-mpilo ihlanganiswe ngokuqinile emaqenjini ayisithupha.I-PO43-tetraonal ne-FEO6 octopus zakha uhlaka lwamathambo ekristalu.I-LI ne-Fe zithatha igebe phakathi kwengwane, kanti u-P uthatha igebe le-tetraonal.I-FE ithatha indawo yekhona evamile ye-octopus, futhi i-li ithatha uhlangothi oluvamile lwe-octopus.I-FEO6 octopus ixhunywe komunye nomunye endaweni ye-BC ye-crystal, futhi isakhiwo se-octopus ye-Li6 esiqondisweni se-B -axis sixhunywe esakhiweni seketango.1 Feo6 octopus kanye 2 LiO6 octopus kanye 1 PO43-tetraonal co-edge.
Ngenxa yokungaqhubeki kwenethiwekhi ye-octopus ehlangene ye-FEO6, ukuqhutshwa kwe-elekthronikhi akukwazi ukwakhiwa;ngesikhathi esifanayo, i-PO43-tetraon inqunyelwe ekushintsheni kwevolumu ye-lattice, okuthinta ukuphelelwa amandla kwamanzi kanye nokusabalalisa kwe-electronic kwe-LI +, okuholela ekuqhubeni kwe-electronic conductivity kanye nokusabalalisa kwe-ion yezinto ezibonakalayo ezibonakalayo ze-LIFEPO4 kanye nokusabalalisa kwe-ion.Ukusebenza kahle kuphansi kakhulu.
Ithiyori kunebhethri ye-Lifepo4 iphakeme (cishe i-170mAh/g), futhi inkundla yokukhipha i-3.4V.I-LI+Buyisela kabusha amandla phakathi kwe-bipolar ephozithivu nenegethivu ukuze usebenzise ukushaja nokukhipha, futhi ukusabela kwe-oxidation kwenzeka ngesikhathi sokushaja.U-Li+ uphuma esigxotsheni esihle, eshumekwe esigxotsheni esinegethivu nge-electrolyte, futhi insimbi yashintsha isuka ku-Fe2+ iya ku-Fe3+, futhi ukusabela kwe-oxidation kwenzeka.
Uhlangothi lwesobunxele lwebhethri ye-lithium iron phosphate i-electrode ekhangayo eyakhiwe ngezinto ze-lifpo4 zesakhiwo somnqumo, exhunywe ku-electrode ephozithivu yebhethri nge-aluminium foil.Kwesokudla i-electrode eyinegethivu yebhethri eyakhiwe ngekhabhoni (graphite), exhunywe ku-electrode engeyinhle yefoyili yethusi ngebhethri.Maphakathi kukhona i-diaphragm ye-polymer, ehlukanisa i-electrode eqondile ku-electrode engalungile.I-lithium ion ingaba ama-electron ngokusebenzisa i-diaphragm futhi ayikwazi ukudlulisa i-diaphragm.Ibhethri ishajwe ngama-electrolyte, futhi ibhethri livalwe ngegobolondo lensimbi.
Impendulo yokushaja nokukhipha amabhethri e-lithium iron phosphate iphakathi kwe-Lifepo4 ne-FEPO4.Phakathi nenqubo yokushaja, i-LIFEPO4 yahlukana kancane kancane ne-lithium ion ukuze yakhe i-FEPO4.Phakathi nenqubo yokukhipha, i-lithium ion ishumekwe i-FEPO4 ukuze yakhe i-LIFEPO4.
Ngesikhathi sokushajwa kwebhethri, ama-ion e-lithium athuthwa asuka kumakristalu e-iron phosphate aye phezu kwekristalu.Ngaphansi kwethonya lenkambu kagesi, faka i-electrolyte, bese udlula ku-diaphragm, bese uthuthela ebusweni bekristalu ye-graphite ngokusebenzisa i-electrolyte, bese ushumeka ku-graphite lattice.
Ngesikhathi esifanayo, i-electrode ye-electronics conductive aluminium foil collector igeleza iye ku-electrode eqondile, futhi umqoqi we-foil yethusi ugeleza endlebeni yesigxobo, ikholomu ephozithiyo yebhethri, isekethe yangaphandle, ikholomu ye-electrode eyinegethivu, nezindlebe ezingezinhle ziye ku-electrode engalungile yebhethri, futhi bese igelezela ku-litteria i-electrode negative , Shaja i-electrode eyinegethivu ukuze ibhalansi.I-Lithium ions iguqulwa ibe yi-iron phosphate ngemuva kokuthi i-lithium iron phosphate iphelelwe amanzi.
Lapho ibhethri likhishwa, i-lithium ion ikhishwa ku-graphite crystal, ifake i-electrolyte, bese idlula ku-diaphragm, ifudukele ebusweni be-lithium iron phosphate ngokusebenzisa i-electrolyte, bese iphinde ishumeke ku-latch ye-lithium. i-iron phosphate.
Ngesikhathi esifanayo, umqoqi we-foil yethusi ugeleza ku-electronics negative ye-meridian ye-electronic, ngokusebenzisa umqoqi we-aluminium foil we-aluminium foil ye-polar ear, ikholomu engalungile yebhethri, isekethe yangaphandle, ikholomu yesigxobo esihle, kanye indlebe ephozithivu ebhethrini.Izigxobo eziphozithivu ze-lithium zenza ukushaja okuphozithivu kufinyelele ibhalansi.I-Lithium ions ishumekwa ngemva kwamakristalu e-iron phosphate, futhi i-iron phosphate iguqulwa ibe yi-lithium iron phosphate.
Isikhathi sokuthumela: Aug-07-2023