Boemo bo tiilengli-betri tsa lithium tse nang le mocheso o tlasebonts'a ts'ebetso e tlase ea electrochemical ka mocheso o tlase.Ho tjhaja betri ea lithium-ion ka mocheso o tlase ho tla hlahisa mocheso karabelong ea lik'hemik'hale tsa li-electrode tse ntle le tse mpe, e leng se tla fella ka ho futhumala ha li-electrode.Ka lebaka la ho se tsitse ha li-electrode tse ntle le tse mpe ka mocheso o tlaase, ho bonolo ho etsa hore electrolyte e arabela ka ho hlahisa li-bubble tsa moea le precipitation ea lithium, kahoo e senya ts'ebetso ea electrochemical.Ka hona, mocheso o tlase ke mokhoa o ke keng oa qojoa ts'ebetsong ea botsofali ea betri.
Thempereichara ea ho tjhaja betri ea lithium-ion e tlase haholo ka mocheso o tlase, e tla baka kotsi ho li-electrode tse ntle le tse mpe.Ha mocheso oa ho tjhaja betri o le tlase ho feta mocheso oa kamore, electrode e ntle ea betri e arabela ebe e senyeha ka mocheso, 'me khase le mocheso o hlahisoang li bokellana ka khase e entsoeng ka electrode e ntle, e leng se etsang hore sele e atolohe.Haeba mocheso o le tlase haholo nakong ea ho qhala, lipalo li tla fetoha tse sa tsitsang.E le ho boloka ts'ebetso ea electrode e mpe le electrode e ntle, betri e tlameha ho qosoa ka ho tsoelang pele, ka hona, lisebelisoa tse sebetsang tsa electrode tse ntle li lokela ho bolokoa sebakeng se itseng ka hohle kamoo ho ka khonehang ha ho tjhaja.
Bokhoni ba betri bo senyeha ka potlako nakong ea mocheso o tlase oa baesekele 'me bo na le tšusumetso e kholo bophelong ba betri.Ho tjhaja mocheso o tlase ho lebisa phetohong e feteletseng ea molumo ho li-electrode tse ntle le tse mpe, e leng se lebisang ho thehoeng ha lithium dendrites mme ka hona ho ama ts'ebetso ea betri.Tahlehelo ea matla le phokotso ea matla nakong ea potoloho ea ho tjhaja/ho qhala e boetse ke ntlha e kholo e amang bophelo ba betri, mme ho bola ha LiCoSiO 2 cathode le LiCoSiO 2 cathode ka mocheso o phahameng ho hlahisa khase le li-bubble hammoho le electrolyte e tiileng, e amang bophelo ba betri.Boitšoaro ba li-electrode tse ntle le tse mpe tse nang le electrolyte mochesong o tlase li hlahisa li-bubble tse hlokisang botsitso le li-electrode tse mpe nakong ea potoloho ea betri, kahoo e baka hore matla a betri a bole kapele.
Katoloso ea bophelo ba potoloho e ipapisitse le boemo ba betri e khaotsoeng le khatello ea lithium ion nakong ea ho tjhaja.Matla a phahameng a lithium ion a tla thibela ts'ebetso ea baesekele ea betri, athe khatello e tlase ea lithium e tla thibela ts'ebetso ea baesekele ea betri.Ha ho tjhaja ka mocheso o tlase ho tla etsa hore electrolyte e sebetsane ka mabifi, ka hona e ama karabelo e ntle le e mpe ea eleketrode, e tla etsa hore ho be le tšebelisano lipakeng tsa lintho tse sebetsang tse ntle le tse mpe, ka hona ho etsa hore eleketrode e mpe e sebetse le ho hlahisa khase e ngata. metsi, kahoo ho eketsa mocheso oa betri.Ha motsoako oa lithium ion o le tlase ho 0.05%, bophelo ba potoloho ke makhetlo a 2 feela / letsatsi;ha motlakase oa betri o phahame ho feta 0.2 A / C, tsamaiso ea potoloho e ka boloka linako tse 8-10 / letsatsi, ha lithium dendrite concentrations e ka tlaase ho 0.05%, tsamaiso ea potoloho e ka boloka linako tse 6-7 / letsatsi. .
Ka mocheso o tlase, tahlehelo ea metsi e tla etsahala ka electrode e mpe le diaphragm ea betri ea Li-ion, e tla lebisa ho fokotseha ha ts'ebetso ea potoloho le matla a ho tjhaja betri;polarization ea thepa e ntle ea elektrode e tla boela e bake brittle deformation ea lintho tse mpe tsa electrode, e leng se etsang hore ho be le ho se tsitse ha lattice le ts'ebetso ea ho fetisa tefiso;ho fetoha mouoane, ho feto-fetoha ha moea, ho senyeha ha metsi, emulsification le pula ea elektrolyte le tsona li tla lebisa ho fokotseha ha ts'ebetso ea potoloho ea betri.Libetri tsa LFP, lisebelisoa tse sebetsang holim'a betri li fokotseha butle-butle ha palo ea tefiso le ho tsoa e ntse e eketseha, 'me ho fokotseha ha thepa e sebetsang ho tla lebisa ho fokotseha ha matla a betri;nakong ea ts'ebetso ea ho tjhaja le ho ntša, ha palo ea tefiso le ho tsoa e ntse e eketseha, lisebelisoa tse sebetsang ho sebopeho li kopana hape ka sebopeho se tiileng le se ka tšeptjoang sa betri, se etsang hore betri e tšoarelle le ho sireletseha.
Nako ea poso: Nov-15-2022