Ukukhumbula ngokuqondile imbangela yokuqhuma kwebhethri ye-lithium ion

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Dobavljač prijenosnih elektrana

Isimiso sebhethri ye-lithium ion Ibhethri ye-lithium ion ibalulekile kusukela ku-electrode ephozithivu, i-electrode eyinegethivu, i-diaphragm, ne-electrolyte. Isendlalelo se-electrode ephozithivu nenegethivu igoqwe ngokuqinile ndawonye, ​​futhi ungqimba luhlukaniswa nongqimba, futhi oluphozithivu nenegethivu lucwiliswa ku-electrolyte. Amabhethri angama-cylindrical namabhethri ayisikwele asetshenziswe njengebhethri yesakhiwo sebhethri ye-lithium ion, esakhiwe izinhlanganisela ezimbili ezihlukene ze-lithium-insert, enhle nebi.

I-node material ibalulekile kuma-transition metal oxides, metal oxides, metal sulfide, nokunye okunjalo. Izinto ze-Commercial Positive electrode ezivame ukusetshenziswa kumabhethri e-lithium-ion ziyizinto ezisetshenziswa kakhulu ze-anode ze-transition metal oxides ezibalulekile izinto ezingezona ezensimbi, izinhlanganisela zensimbi-non-metallic, ama-oxide ensimbi, nokunye okunjalo. I-lithium iron phosphate iboshwe Izinto ze-electrode electrode kwakheka ezintweni ezihambisayo inquma i-voltage namandla e-electrolyte yebhethri njengengxenye ebalulekile yebhethri ye-lithium ion, futhi idlala ukusetshenziswa okubalulekile kokudluliselwa kwamanje ngesikhathi sokushajwa nokukhipha ibhethri.

Ukuze kuvinjwe izinto ezibonakalayo ze-electrode ezinhle nezingezinhle ezicwiliswe ku-electrolyte ngenxa yomunye nomunye, i-diaphragm ye-electrolytic enhle nebi iyahlukaniswa. Ibhethri lesibili le-lithium ion empeleni ibhethri elimpofu ekugxilweni kwe-ion ye-lithium . ukushaja 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 manje iphishekela umthamo ophakeme wokwandisa impilo yebhethri. Kusukela ngo-1991, ibhethri le-lithium-ion lithengiswa kuze kube manje, umthamo wamandla wamabhethri e-lithium-ion ungeze indlela yokuqhuma kwebhethri ye-lithium-ion izikhathi ezine noma ezinhlanu. Ngakho siyaqonda ukuthi isebenza kanjani, ukuze siqonde ukuthi yini ebangelwa i-lithium ions.

Ukuqhuma kwebhethri . 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 kunesici ebhethrini, izinhlayiya zensimbi zixhuma i-electrode ephozithivu ngongqimba lwebhethri, ziguqule isiqondiso sebhethri, ziguqule indlela yamanje, zibangele ukuthi izinto zangaphakathi ziwohloke, zivumele ukusabela kwamakhemikhali, zikhiphe ukushisa okwengeziwe, zithungele ibhethri yephakheji Ukushaja ibhethri lethu lamanje kunesistimu yokuvikela ebuyisela amandla kagesi webhethri ukuvimbela ukushajwa ngokweqile, okungase kubangele ukushajwa, ukonakala kwesistimu yebhethri kushaja noma ukushaja ibhethri. Qhubeka ukukhishwa futhi ushumekwe ezintweni ezingezinhle ze-electrode.

Uma i-lithium ephezulu eshumekwe ku-electrode eyi-carbon negative, i-lithium eyeqile izofaka ezintweni ezingezinhle ze-electrode ngendlela yensimbi ye-lithium, kunciphise kakhulu ukusebenza kokuqina kwebhethri. Ngisho nokuqhuma kuhlobene nebhethri ye-lithium-ion, akukhona nje ukuthi umthamo webhethri uwukuthuthuka, kodwa ukusebenza kokuphepha akunakunakwa. Manje abanye abakhiqizi bebhethri banezinga eliphezulu lokuvikeleka, ngisho nokubona amabhethri.

Siyaqonda ukuthi uma isipikili singena ebhethrini, sizoxhuma ngqo ku-negative, okuzodala ama-circuits angaphakathi afushane. 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.