Ibhethri polymer ibhetri

lithium polymer ibhethri

Ibhethri ye-lithium polymer iwuhlobo lwebhethri elishajekayo endaweni encane. Lawa mabhethri alungele amadivayisi eselula adinga ngaphezu kwama-watts angu-3 kodwa angaphansi kwama-watts angu-7, njengamakhompyutha aphathekayo nomakhalekhukhwini. Amabhethri e-lithium polymer aqanjwe ngengxube ye-lithium ion nama-polymers (into enama-molecule amakhulu) akha ukwakhiwa kwawo.

Ibhethri ye-lithium polymer yasungulwa futhi yadalwa abacwaningi ngasekupheleni kwawo-1980. Iprototype yokuqala yebhethri ye-lithium polymer yathuthukiswa ngo-1994 ukuze isetshenziswe ezimweni eziphuthumayo, futhi cishe eminyakeni eyi-10 ngemva kokudalwa kwayo, yasetshenziswa kumasathelayithi kanye nemikhumbi-mkhathi. Ibhethri ye-lithium polymer isetshenziswe kumakhalekhukhwini kusukela ngo-2004, okuyilapho u-Sony ekhiqiza khona umakhalekhukhwini wokuqala otholakala kwezohwebo usebenzisa ibhethri ye-lithium ion.

Amabhethri e-lithium polymer ahlukile kumabhethri e-lithium ion ngoba awanayo isihlukanisi phakathi kwama-electrode aqondile noma angalungile. Ama-polymer asetshenziswa ngaphakathi kwalawa mabhethri anokufana okufanayo nejeli, yingakho evame ukubizwa ngamaseli ejeli. Amabhethri e-lithium polymer nawo anenzuzo yokungabi namathuba amancane okuthola ukuvuza kwe-electrolyte uma kuqhathaniswa nezinye izinhlobo zamabhethri e-lithium ion ngoba asikho isihlukanisi esikhona.

Ingozi yokuvuza kwe-electrolyte yenzeka ngisho nangamanye amamodeli we-polymer engeyona i-lithium. Nakuba ibhethri libukeka lifana namanye amabhethri e-lithium ion, izinto ezisetshenziswa ngaphakathi kwalo zihlukile kulezo zamabhethri e-lithium ion endabuko. I-electrolyte ewuketshezi ehlanganisa amatheminali avumayo kanye nenegethivu ngaphakathi kwebhethri ye-lithium ion evamile yakhiwe i-potassium hydroxide noma i-lithium hydroxide, esabela negraphite ku-electrode ephozithivu ngesikhathi sokushaja.

Enye ingxenye yebhethri ye-lithium ion ewusizo i-graphite, okuthi ngokusabela kwamakhemikhali nge-electrolyte yakhe isisindo esiqinile esibizwa nge-carbon dioxide pentoxide, esebenza njengesivikeli. Ebhethri le-lithium polymer, nokho, i-electrolyte yakhiwa i-poly(ethylene oxide) ne-poly(vinylidene fluoride), ngakho-ke asikho isidingo segraphite nanoma yiluphi olunye uhlobo lwekhabhoni. Ama-polymers ayizinto ezingama-molecule amakhulu, angakwazi ukumelana nokushisa okuphezulu nokugqwala okuthile.

Ama-polymer asetshenziswa ngaphakathi kwamabhethri e-lithium polymer ahlinzeka ngezinto ezithuthukisa ukungaguquguquki okufana nejeli uma kuqhathaniswa nezinye izinhlobo zamabhethri e-lithium ion. I-electrolyte yenziwe nge-solvent ephilayo engakhiwa ngaphandle kwe-lithium, ngakho iba uhlobo lwebhethri olungabizi kakhulu.

Amabhethri e-lithium polymer asetshenziswa ezinhlelweni eziningi ngoba aguquguqukayo futhi angabekezelela amazinga okushisa aphezulu kunezinye izinhlobo zamabhethri e-lithium ion. Futhi zinesisindo esingaphansi kunesandulelayo, okuvumela umsebenzisi ukuthi abambe idivayisi yeselula isikhathi eside ngaphandle kokuphatheka kabi noma ubuhlungu ezihlakaleni nasezandleni.