Ukuhlaziywa okuqondile kokuqhuma kwebhethri ye-lithium ion

著者：Iflowpower – Dodavatel přenosných elektráren

Isimiso sebhethri ye-lithium ion Ibhethri ye-lithium ion yakhiwe nge-electrode ephozithivu, i-anode, i-diaphragm, ne-electrolyte. Isendlalelo se-electrode ephozithivu nenegethivu igoqeka ngokuqinile ndawonye, ​​futhi ungqimba nongqimba kuyahlukaniswa kusivikeli, futhi okuhle nokubi kucwiliswa ku-electrolyte. Amabhethri angama-cylindrical namabhethri ayisikwele asetshenziswe njengebhethri yesakhiwo sebhethri ye-lithium ion esakhiwe izinhlanganisela ezimbili ezihlukene ze-lithium-insertic, ngokulandelana.

Impahla ye-electrode eqondile iyi-tightly transition metal oxide, i-metal oxide, i-metal sulfide, nokunye okunjalo. ezohwebo Izinto ze-electrode ezinhle ezivame ukusetshenziswa kumabhethri e-lithium-ion zisetshenziswa kakhulu yi-anode material yama-transition metal oxides. Izinto ze-anode ziyizinto eziqinile ze-inorganic non-metallic, izinhlanganisela zensimbi-non-metallic, ama-oxide ensimbi, nokunye okunjalo.

i-lithium iron phosphate positive and negative material I-electrode electrode material yakheka ku-conductive material inquma i-voltage kanye nomthamo we-electrolyte yebhethri njengengxenye eqinile yebhethri ye-lithium ion, futhi idlala isifiso sokudluliswa kwamanje ngesikhathi sokushajwa nokuphuma kwebhethri. Ukuze kuvinjwe izinto ze-electrode ezinhle nezingezinhle ezicwiliswa ku-electrolyte kusisombululo se-electrolytic, impahla ye-electrode enhle nengalungile ihlukaniswa nempahla ye-electrode enhle nebi ecwiliswa ku-electrolyte. I-LI ithathwa ku-electrode enhle, futhi i-electrode engalungile ifakwe ku-electrode engalungile, i-electrode enhle isesimweni se-lithium, inkokhiso yesinxephezelo yama-electron inikezwa yisifunda sangaphandle ukuze kuqinisekiswe ibhalansi yenkokhelo.

Ukukhishwa kuhlobene nokukhishwa, futhi i-Li ikhishwa ku-electrode engalungile futhi ishumekwe ezintweni ze-cathode nge-electrolyte. Ngaphansi kwezimo ezivamile zokushaja nokukhipha, ama-ion e-lithium ayashunyekwa futhi asuswe phakathi kwezinto zekhabhoni enezingqimba nezakhiwo ezinezingqimba, ngokuvamile ezidala izinguquko kuphela esikhaleni sesendlalelo sezinto ngaphandle kokulimaza isakhiwo sazo sekristalu. Phakathi nenqubo yokushaja nokukhipha, isakhiwo samakhemikhali sezinto ezingezinhle ze-electrode empeleni azishintshile.

Isibalo sokusabela kwe-ion siya ngokuya singenzeki ukungeza izinyathelo zokuphepha ngaphakathi kwebhethri, njengoba iphishekela umthamo ophakeme wokwandisa impilo yebhethri. Kusukela ngo-1991 ekudayiseni ibhethri ye-lithium-ion kuya kulokhu okushadiwe, umthamo wamandla wamabhethri e-lithium-ion wengeze indlela yokuqhuma kwebhethri ye-lithium-ion izikhathi ezine noma ezinhlanu. Ngakho-ke siyaqonda ukuthi kusebenza kanjani, ukuze siqonde ukuthi okwangempela okubangele ukuqhuma kwebhethri ye-Lithium ion .

Ukushaja nokukhishwa kwebhethri ye-lithium branch crystal ukukhula ukudluliswa kokubuyisela kwe-lithium ion. Ngesikhathi sokushaja, ama-ion e-lithium ancishiswa abe yinsimbi ye-lithium eshumekwe ku-electrode engemihle. Ngokuvamile, i-lithium ingashumeka esakhiweni se-interlayer, esingase sikhule ebusweni be-electrode ngenxa yokungaqiniseki kokukhula, futhi ungqimba lokukhula lunesakhiwo esigwaziwe esifanayo negatsha, esingalimaza i-diaphragm yebhethri, okuholela ekujikelezeni okufushane ngaphakathi kwebhethri.

Nokuqhuma kwebhethri. Uma ibhethri likhubazekile, izinhlayiya zensimbi zixhuma i-electrode engalungile ngongqimba lwebhethri oluvikelayo, lushintshe indlela yamanje, okwenza okokusebenza kwangaphakathi kwehle, ukuze ukusabela kwamakhemikhali kulahlekelwe ukulawula, ukukhulula ukushisa okwengeziwe, ukuthungela ibhethri yephakheji Ukushaja ibhethri lethu lamanje kunesistimu yokuvikela, i-voltage yebhethri ye-feedback, enesexwayiso phezu kokushaja, okungase kubangele ukushajwa kwebhethri, ukulimaza ibhethri le-lithium , ukuvikela ibhethri kusistimu yebhethri. impahla ye-cathode Iyaqhubeka ikhishwa futhi ishumekwe ezintweni ezingezinhle ze-electrode. Uma i-lithium ephezulu eshumekwe ku-electrode eyi-carbon negative ifinyelelwa, i-lithium eyeqile izofaka ezintweni ezingezinhle ze-electrode ngendlela yensimbi ye-lithium, inciphise kakhulu ukusebenza kokuqina kwebhethri.

Ngisho nokuqhuma kuhlobene nebhethri ye-lithium-ion, akukhona nje ukuthi umthamo webhethri uwukuthuthuka, kodwa ukusebenza kokuphepha akunakunakwa. Namuhla, abanye abakhiqizi bamabhethri banezinga eliphezulu lokuphepha, ngisho nokubona amabhethri. Siyaqonda ukuthi uma uzipho lungena ebhethrini, luzoxhuma ngqo ku-negative, okuzodala ukujikeleza okufushane kwangaphakathi.

I-electrolyte ye-gel kanye ne-polymer electrolyte nazo zisekucwaningweni okwengeziwe, ikakhulukazi ukuthuthukiswa kwe-polymer electrolyte, akukho uketshezi lwe-organic electrolyte volatilization ebhethri, okuthuthukisa kakhulu ukuphepha kwebhethri.