Ibhetri yeLithium polymer

Ibhetri ye-lithium polymer

Ibhetri ye-lithium yepolymer luhlobo lwebhetri etshajwayo kwifom encinci. Ezi bhetri zilungele izixhobo eziphathwayo ezifuna ngaphezulu kwe-3 watts kodwa ngaphantsi kwe-7 watts, ezifana neelaptops kunye neeselfowuni. Iibhetri ze-lithium zepolymer zathiywa umxube we-lithium ion kunye neepolymers (into eneemolekyuli ezinkulu) ezenza ulwakhiwo lwazo.

Ibhetri ye-lithium polymer yaqanjwa kwaye yenziwa ngabaphandi ngasekupheleni kweminyaka yoo-1980. Iprototype yokuqala yebhetri ye-lithium polymer yaphuhliswa kwi-1994 yokusetyenziswa kwezonyango ngokukhawuleza, kwaye malunga neminyaka eyi-10 emva kokudalwa kwayo, yayisetyenziswa kwiisathelayithi kunye ne-spacecraft. Ibhetri ye-lithium polymer isetyenziswe kwiifowuni eziphathwayo ukususela ngo-2004, apho u-Sony wavelisa ifowuni yokuqala ekhoyo yorhwebo esebenzisa ibhetri ye-lithium ion.

Iibhetri ze-lithium ze-polymer zihluke kwiibhetri ze-lithium ion kuba azinayo isahluli phakathi kwee-electrodes ezilungileyo kunye nezibi. Iipolymers ezisetyenziswa ngaphakathi kwezi bhetri zinokufana okufanayo nejeli, yiyo loo nto zibizwa ngokuba ziiseli zejeli. Iibhetri ze-lithium ze-polymer nazo zinenzuzo yokungabi namathuba okufumana ukuvuza kwe-electrolyte xa kuthelekiswa nezinye iintlobo zeebhetri ze-lithium ion kuba akukho sahluli sikhoyo.

Umngcipheko wokuvuza kwe-electrolyte nakweminye imifuziselo yepolymer engeyiyo lithium. Ngelixa ibhetri ifana nokubonakala kwezinye iibhetri ze-lithium ion, izinto ezisetyenziswa ngaphakathi kuyo zihluke kwiibhetri ze-lithium ion zendabuko. I-electrolyte engamanzi edibanisa iitheminali ezilungileyo kunye nezingalunganga ngaphakathi kwebhetri ye-lithium ion eqhelekileyo yenziwe nge-potassium hydroxide okanye i-lithium hydroxide, ehambelana negraphite kwi-electrode efanelekileyo ngexesha lokutshaja.

Elinye icandelo lebhetri ye-lithium ion eluncedo yigraphite, ethi ngokusabela kweekhemikhali kunye ne-electrolyte yenza ubunzima obunzima obubizwa ngokuba yi-carbon dioxide pentoxide, esebenza njengesigqubuthelo. Kwibhetri ye-lithium polymer, nangona kunjalo, i-electrolyte yenziwe nge-poly (ethylene oxide) kunye ne-poly (vinylidene fluoride), ngoko akukho mfuneko yegraphite okanye nayiphi na enye indlela yekhabhoni. Iipolymers zizinto eziziimolekyuli ezinkulu, ezinokuxhathisa ukushisa okuphezulu kunye nokubola okuthile.

Iipolymers ezisetyenziswe ngaphakathi kweebhetri ze-lithium polymer zibonelela ngezinto eziphuhlisa i-gel-efana ne-gel xa kuthelekiswa nezinye iintlobo zeebhetri ze-lithium ion. I-electrolyte yenziwe nge-solvent ye-organic enokuveliswa ngaphandle kwe-lithium, ngoko iba yinto ebiza kakhulu ibhetri.

Iibhetri ze-lithium ze-polymer zisetyenziswa kwizicelo ezininzi kuba ziguquguquka kwaye zikwazi ukunyamezela amaqondo aphezulu aphezulu kunezinye iintlobo zeebhetri ze-lithium ion. Banobunzima obungaphantsi kunabo bangaphambili, obuvumela umsebenzisi ukuba abambe isixhobo esiphathwayo ixesha elide ngaphandle kokuva ubunzima okanye iintlungu ezihlahleni nasezandleni zabo.