Indlela yokuthuthukisa ukuphepha kwamabhethri e-lithium

Inzuzo yezimoto ezintsha ezisebenza ngamandla ukuthi zinekhabhoni ephansi kakhulu futhi zinobungani nemvelo kunezimoto eziphehlwa ngophethiloli. Isebenzisa amafutha emoto angajwayelekile njengomthombo wamandla, njengamabhethri e-lithium, i-hydrogen fuel, njll. Ukusetshenziswa kwebhethri ye-lithium-ion kubanzi kakhulu, ngaphandle kwezimoto zamandla amasha, amafoni omakhalekhukhwini, ama-laptops, ama-tablet PC, amandla eselula, amabhayisikili kagesi. , amathuluzi kagesi, njll.

Kodwa-ke, ukuphepha kwamabhethri e-lithium-ion akufanele kuthathwe kancane. Izingozi eziningi zibonisa ukuthi lapho abantu beshajwa ngendlela engafanele, noma izinga lokushisa lendawo liphezulu kakhulu, kulula kakhulu ukuqalisa ukusha okuzenzakalelayo kwebhethri ye-lithium-ion, ukuqhuma, okuye kwaba indawo enkulu yobuhlungu ekuthuthukisweni kwamabhethri e-lithium-ion.

Nakuba izakhiwo zebhethri ye-lithium ngokwayo inquma isiphetho sayo "esivuthayo nesiqhumane", kodwa akunakwenzeka ngokuphelele ukunciphisa ingozi nokuphepha. Ngokuqhubeka okuqhubekayo kobuchwepheshe bebhethri, zombili izinkampani zamaselula nezinkampani zezimoto zamandla amasha, ngokusebenzisa uhlelo lokuphatha ibhethri olunengqondo kanye nesistimu yokulawula okushisayo, ibhethri lizokwazi ukuqinisekisa ukuphepha, futhi ngeke liqhume noma into ezenzakalelayo yokusha.

1.Thuthukisa ukuphepha kwe-electrolyte

Kukhona ukuphinda kusebenze okuphezulu phakathi kwe-electrolyte kanye nawo womabili ama-electrode aqondile noma angalungile, ikakhulukazi emazingeni okushisa aphezulu. Ukuthuthukisa ukuphepha kwamabhethri, ukwenza ngcono ukuphepha kwe-electrolyte kungenye yezindlela eziphumelela kakhulu. Ngokungeza izithasiselo ezisebenzayo, usebenzisa usawoti we-lithium omusha nokusebenzisa izincibilikisi ezintsha, izingozi zokuphepha ze-electrolyte zingaxazululwa ngempumelelo.

Ngokwemisebenzi ehlukene yezithasiselo, zingahlukaniswa zibe yizigaba ezilandelayo: izithasiselo zokuvikela ukuphepha, izithasiselo ezenza ifilimu, izithasiselo zokuvikela i-cathode, izithasiselo zokuqinisa usawoti we-lithium, izithasiselo zokukhushulwa kwe-lithium precipitation, izithasiselo zokulwa nokubola okuqoqiwe, izithasiselo ezithuthukisiwe zokumanzisa. , njll.

2. Thuthukisa ukuphepha kwezinto ze-electrode

I-lithium iron phosphate kanye nezinhlanganisela ze-ternary zibhekwa njengezindleko eziphansi, "ukuphepha okuhle kakhulu" izinto ze-cathode ezinamandla okusetshenziswa kakhulu embonini yezimoto zikagesi. Ngokwezinto ezibonakalayo ze-cathode, indlela evamile yokuthuthukisa ukuphepha kwayo ukuguqulwa kokugqoka, njengama-oxide ensimbi ebusweni bezinto ze-cathode, kungavimbela ukuthintana okuqondile phakathi kwezinto ze-cathode kanye ne-electrolyte, ukuvimbela ukuguqulwa kwesigaba sezinto ze-cathode, ukuthuthukisa ukwakheka kwayo. ukuzinza, ukunciphisa ukuphazamiseka kwama-cations ku-lattice, ukuze kuncishiswe ukukhiqizwa kokushisa okuhlangene.

Izinto ezingezinhle ze-electrode, njengoba ubuso bayo buvame ukuba yingxenye yebhethri ye-lithium-ion esengozini enkulu yokubola kwe-thermochemical kanye ne-exotherm, ukuthuthukisa ukuzinza okushisayo kwefilimu ye-SEI kuyindlela eyinhloko yokuthuthukisa ukuphepha kwezinto ezingezinhle ze-electrode. Ukuzinza okushisayo kwezinto ze-anode kungathuthukiswa nge-oxidation ebuthakathaka, i-metal and metal oxide deposition, i-polymer noma i-carbon cladding.

3. Thuthukisa idizayini yokuvikela ukuphepha kwebhethri

Ngaphezu kokuthuthukisa ukuphepha kwezinto zebhethri, izindlela eziningi zokuvikela ukuphepha ezisetshenziswa kumabhethri e-lithium-ion ezentengiselwano, njengokusetha ama-valve okuphepha kwebhethri, ama-fuse ancibilikayo ashisayo, izingxenye ezixhumayo ezinama-coefficients okushisa amahle ochungechungeni, kusetshenziswa ama-diaphragm avaliwe ngokushisa, ukulayisha isivikelo esikhethekile. amasekhethi, namasistimu okuphatha amabhethri azinikele, nawo ayindlela yokuthuthukisa ukuphepha.

Isikhathi sokuthumela: Feb-14-2023