+86 18988945661 
contact@iflowpower.com 
+86 18988945661i
Ulwimi
+86 18988945661 contact@iflowpower.com +86 18988945661i
Umbhali :Iflowpower-UMboneleli weSikhululo saMandla esiphathwayo
Namhlanje, uphuhliso lwanamhlanje oluphuhliswe kakhulu, ubuchwephesha obuphezulu obuhlukeneyo buvele kubomi bethu, buzisa lula kubomi bethu, ke uyayiqonda ibhetri ye-lithium-ion ezinokuthi ziqulathe ezi ziphezulu? Kwaye i-predith eqhelekileyo Yintoni indlela yendlela yekhemikhali? 1. Singakwazi ukuguqula i-electrode engathandekiyo ibe yifom enye, emva koko siyihlanganise kunye ne-electrode efanelekileyo, kwaye ke i-electrode engalunganga iya kwenza ifilimu ye-SEI. Oku kuthintela ukulahleka kwe-ion ze-lithium kwi-electrode efanelekileyo, kwaye kunokuphucula kakhulu ukusebenza kakuhle kunye nomthamo webhetri: ntywilisela ipleyiti ye-cathode kunye ne-lithium plate kwi-electrolyte kwaye uyihlawule ngoqhagamshelwano lwesekethe yangaphandle.
Oku kuqinisekisa ukuba i-lithium ion esetyenzisiweyo ngexesha lenkqubo yokwakheka ivela kwiphepha lensimbi ye-lithium, kungekhona i-pole positive. Emva kokuba i-plate negative yenziwe, iya kuhlanganiswa kunye ne-electrode plate enhle kwakhona. Ibhetri akufanele yenziwe kwakhona, ngoko i-lithium ion ye-electrode efanelekileyo ayiyi kulahleka ngenxa yokubunjwa kwefilimu ye-SEI kwi-electrode engafanelekanga, kwaye umthamo uya kwanda kakhulu.
Inzuzo yale ndlela yekhemikhali yangaphambili ye-lithium kukuba inokwandisa inkqubo yokulungelelanisa kwaye iqinisekise ukuba umphumo wokubunjwa kwefilimu ye-SEI ifana nefuthe lokubunjwa kwebhetri epheleleyo. Nangona kunjalo, ezi nkqubo zimbini kunzima ukusebenza: i-electrode engalunganga preform kunye ne-positive electrode assembly. I-2, i-tap ye-lithium powder engafanelekanga inzima ukwenza i-lithium yongezelela kuphela nge-electrode engafanelekanga, ngoko ke abantu bacinga ngendlela yokutshiza i-lithium powder kwi-electrode engafanelekanga.
Okokuqala, ukulungiselela isinyithi esizinzileyo se-lithium powder particles. Uluhlu lwangaphakathi lwamaqhekeza luyi-lithium yensimbi, kunye noluhlu lwangaphandle luyi-ion ye-lithium kunye noluhlu olukhuselayo olune-electronic conductive elungileyo. Ngexesha lokulungiselela ukulungiswa kwangaphambili, i-lithium powder iqala ukuchithwa kwi-solvent ye-organic, kwaye emva koko i-dispersion ifafazwe kwi-plate ye-electrode engalunganga, kwaye i-solvent ye-organic eseleyo kwipleyiti ye-electrode engalunganga yomiswa ukuze ifumane ipleyiti engalunganga. .
Umsebenzi wokuhlanganisa olandelayo uhambelana nenkqubo eqhelekileyo. Ngethuba lokuguqulwa, i-lithium powder efafazwe kwi-electrode engafanelekanga iya kusetyenziselwa ukwenza ifilimu ye-SEI, ngaloo ndlela ikhulise ukugcinwa kwe-lithium ion kwi-electrode efanelekileyo, kwaye yongeza amandla ebhetri yonke. 3.
Indlela ye-electrode enemigangatho emithathu engalunganga ngenxa yokusikelwa umda kwezixhobo kunye nethekhnoloji, malunga neefektri zebhetri, ukuqhuba nje ukuguqulwa kwexabiso eliphezulu le-predason akuyona into ephambili. Ukuba unokugqiba i-pre-lithiuming ngendlela eqhelekileyo, iya kuyiphucula kakhulu indawo yonke. Le ndlela ilandelayo ye-electrode enemigangatho emithathu yenza ukuba ukusebenza komzi-mveliso webhetri kube lula.
Undoqo wendlela ye-electrode enemigangatho emithathu kukusetyenzwa kwefoyile yobhedu. Xa kuthelekiswa ne-foil yobhedu eqhelekileyo, i-foil yobhedu yendlela ye-electrode enemigangatho emithathu ifakwe kwi-lithium metal powder efunwayo. Ukuze kuthintelwe i-lithium powder ekuphenduleni ngomoya, umgca okhuselayo wongezwa kwi-lithium powder.
I-electrodes engafanelekanga isetyenziswe ngokuthe ngqo kwinqanaba elikhuselayo. Isikimu esipheleleyo sendibano ye-electrode yomaleko enye ngolu hlobo lulandelayo: Xa ibhetri ifakwe ebhetri, umaleko okhuselayo uya kunyibilika kwi-electrolyte, ukuze i-lithium yensimbi idibane ne-electrode engalunganga. I-Lithium ion ezidliwe yi-SEI yokubunjwa kwefilimu yongezwa nge-lithium metal powder.
Emva kokuba i-electrode ihlawuliswe, le ndlela iboniswa ngolu hlobo lulandelayo: Le ndlela ayifuni ngokungqongqo iimeko zokucutshungulwa kwefektri yebhetri, kodwa indawo yomgangatho okhuselekileyo wokukhusela kunzima kakhulu ukuvuthuza, ukujika kunye nokusika kungumngeni omkhulu, kwaye uphuhliso kunye nophuhliso lwezixhobo zophando electrode kwakhona nzima Guarantee. Ibhondi yentsimbi ye-lithium powder yezinto ze-electrode iye yaba kwaye yanyamalala. 4.
Indlela efanelekileyo yezinto ezityebileyo ze-lithium kufuneka ibe namava endlela izinto ezinzima ngayo kwilabhoratri eyandisiweyo. Iindleko zokuguqulwa kwezixhobo, iindleko zotyalo-mali oluninzi kwizinto eziphathekayo, kunye neendleko zokulawula iindleko zokucubungula, kunye nobuchwepheshe obutsha abunakunqanda le nzakala ebulalayo. Kwinkqubo yebhetri ye-lithium-ion, izixhobo sele zikhulile kakhulu.
Indlela ye-ion inokuqondwa ngokufutshane ukuba ithetha ukuba xa i-ion lithium ion iguqulwa ibe yi-ion ye-lithium, isixa se-ion ye-lithium yi-avareji yesixa se-lithium ion. Xa impembelelo ye-negative yokuqala ingaphantsi kwe-electrode efanelekileyo, i-ion ye-lithium inkulu kakhulu, ebangela ukuba indawo esebenzayo emva kokukhutshwa, engakwazi ukugcwalisa i-electrode ye-lithium ion emihle, okubangela inkunkuma yenkunkuma kwi-electrode efanelekileyo. Ukuba ixabiso elincinci le-lithium ecebileyo ye-lithium yongezwa kwi-electrode efanelekileyo, ayikwazi ukubonelela kuphela i-lithium ion ezininzi ukwenza ukuguqulwa kwefilimu ye-SEI, kodwa iphinde ithintele izinto ezityebileyo ze-lithium ukuba zifakwe kwi-lithium ion discharge. (kuba zonke izibonelelo Ion ukuguqula ukusetyenziswa kwamafutha e-lithium ion).
Indlela ekhankanywe ngasentla ye-lithiumdiation ibhetri epheleleyo, apho umphumo wokuqala we-electrode engafanelekanga ungaphantsi kwesiphumo sokuqala se-electrode efanelekileyo. Emva kwebhetri ye-lithium-pre-pre-pre-lithium, eyona nto iphezulu yokusebenza kakuhle inokufikelela kuphela kwinqanaba le-half-cell ye-positive material material. Nangona kunjalo, le ndlela ingasentla ayinamsebenzi kakhulu malunga nesiphumo sokuqala se-electrode efanelekileyo, ekubeni isiphumo sokuqala sebhetri yonke sinqunyelwe yintlawulo efanelekileyo, kwaye akukho ndawo eyaneleyo yokufaka i-lithium.
Nangona i-lithium yangaphandle yongezwa, ayikwazi ukufakwa kwi-electrode efanelekileyo, ngoko akukho mphumo.
Copyright © 2024 iFlowpower - Guangzhou Quanqiuhui Network Technique Co., Ltd.
