Ukuthuthukisa Ukusebenza Kwebhethri: Iqhaza Elibalulekile Lokwelashwa Kwe-Corona Ekunamatheleni Kwe-Electrode Coating
Ukuphushela okungapheli okuya ekufakeni ugesi, kusukela ezimotweni zikagesi (EVs) kuya kugridi-yesikali sokulondoloza amandla, kubeke izidingo ezingakaze zibonwe kubuchwepheshe bebhethri ye-lithium{1}}. Enhliziyweni yawo wonke-ibhethri elisebenza kahle lilele isinyathelo sokukhiqiza esibucayi kodwa esivame ukushaywe indiva: ukuqinisekisa ukunamathela okuphelele phakathi kwengubo yento esebenzayo ye-electrode kanye neqoqo layo lamanje le-foil yensimbi. Ukwehluleka lapha kungaholela ekulahlekelweni okuyinhlekelele kwekhono, amandla, nokuphila isikhathi eside. Kulapho kulapho ubuchwepheshe bokwelapha i-Corona buvela khona njengethuluzi elibalulekile, elinembayo lokuthuthukisa ukubopha okunamathelayo kanye nokuvula ukusebenza kwebhethri okuphezulu.
Inselele Yokunamathela Ekwenziweni Kwebhethri
I-electrode evamile yebhethri iqukethe i-slurry-ingxube yezinto ezisebenzayo (isb, i-Lithium Iron Phosphate noma i-NMO yama-cathodes, i-graphite yama-anode), izithasiselo ezisebenzayo, nama-binder{3}}ahlanganiswe ku-foil yensimbi encane (i-aluminium ye-cathode, ithusi ye-anode). Isibopho phakathi kwalolu daka kanye ne-foil i-foil kufanele ibe namandla kakhulu.
Ukunamathela okungalungile kuholela ku:
I-Delamination:I-coating ihlukana ne-foil ngesikhathi sokuhamba ngebhayisikili, okuholela ekwehleni okusheshayo komthamo.
Ukwenyuka Ukumelana Kwangaphakathi:Ukungathintani kahle kuphakamisa ukumelana nogesi, kunciphisa ukuphuma kwamandla futhi kubangele ukungasebenzi kahle kwamandla.
I-Cycle LifeCycle Life Reduction:Njengoba izinhlayiya zihlukana, azisebenzi ngamakhemikhali kagesi, zifinyeze impilo esebenzisekayo yebhethri.
Amaphutha Okukhiqiza:Ukuxhumana okunganele kungabangela ukuqhekeka noma ukuxebuka ngesikhathi se-calendering (ukucindezela) nezinqubo zokusika.
Imbangela eyinhloko yokunganamatheli kahle ngokuvamile iphansiamandla angaphezuluama-foil ensimbi ahlanzekile. Nakuba ingase ibukeke ibushelelezi, lawa mafoyili anezindawo ezingasebenzi ngamakhemikhali ezingemukeli ngokwemvelo udaka olumanzi, okuholela ezibopho zomzimba ezibuthakathaka.
Kuyini Ukwelashwa KweCorona?
Ukwelashwa kwe-Corona kuyindlela-esungulwe kahle, yokuguqula indawo ye-plasma yasemkhathini. Isebenzisa{2}}imvamisa, -ukukhishwa kukagesi okuphezulu kwe-voltage ukuze i-ionze umoya ozungeze i-electrode foil, idale ifu lezinhlobo ze-plasma ezisebenzayo{4}}okuhlanganisa i-ozone, ama-ion komoyampilo, nama-radicals amahhala.
Njengoba ucwecwe ludlula ngokuqondile phezu kwerola eliphansi ngaphansi kwesiteshi sokwelapha i-corona, lesi "siphepho sikagesi" esilawulwayo sihlasela i-foil, siqala izindlela ezimbili ezibalulekile:
1. Ukusebenza Kobuso:I-plasma iphula izibopho zamangqamuzana ebusweni be-foil, idale izindawo ezisebenza kakhulu.
2. UkusebenzaUkusebenza:Lawa masayithi asebenzayo enza ngokushesha amabhondi e-covalent anomphela nomoya-mpilo ovela emoyeni, ethula amaqembu asebenza endaweni epholile (afana namaqembu e-carbonyl, i-hydroxyl, ne-carboxyl) ngaphezulu.
Ukuthi Ukwelashwa Kwe-Corona Kuthuthukisa Kanjani I-Coating Bonding
Lokhu kuguqulwa kwendawo kuletha izinzuzo ezinamandla zokukhiqiza ama-electrode:
1. Amandla Aphezulu Akhuphuka Kakhulu:Ukwethulwa kwamaqembu e-polar kwenza-indawo engaphakathi engenalutho ibe ne-hydrophilic kakhulu futhi yamukeleke ngamandla. Lokhu kuvumela isincibilikisi{{2}esisekelwe noma esine-aqueous slurry ukuthi sisakazeke ngokulinganayo futhi simanzise indawo yonke, senze ukuthintana okusondelene kakhulu. Amandla aphezulu aphezulu yiwona mshayeli oyisisekelo wokunamathela okuqinile.
2. I-Mechanical Interlocking ethuthukisiwe:ukukhiya:Ngezinga elincane kakhulu, ukwelashwa kwe-corona kuqinisa i-foil, kudala i-nano-ukuhwalala. Le ndawo eyengeziwe ihlinzeka "ngamaphoyinti okunamathisela" engeziwe ukuze ama-polymers ahlanganisayo ku-slurry abambelele kuwo, okuqinisa kakhulu amandla esibopho semishini.
3. Ukuhambisana Kwekhemikhali Okuthuthukisiwe:Amaqembu asebenza endaweni epholile asebenza njengebhuloho lamakhemikhali, enza amabhondi esibili aqinile (amandla e-van der Waals) kanye namabhondi angaba namandla okusebenzisana nesistimu yokuhlanganisa odongeni. Lokhu kwakha isixhumi esibonakalayo esihlangene kunesendlalelo esilula somshini.
4. I-Superior Coating Uniformity: Ngokumanzisa okuhle kakhulu, i-slurry igeleza ngokungaguquki kubo bonke ububanzi be-foil, isusa amaphutha njengama-pinnholes, ama-agglomerations, noma umphumela owesabekayo "wokumanzisa{0}". Lokhu kufana kubalulekile ekusabalaliseni okungaguquki kwamanje nokusebenza kwebhethri.
Izinzuzo Eziyinhloko Zabakhiqizi Bebhethri
Ukuhlanganisa umuthi we-corona emugqeni wokuhlanganisa i-electrode kunikeza ukukhiqizwa okubambekayo kanye nezinzuzo zomkhiqizo:
I-Boosted Energy Density:Ukunamathela okuqinile kuvumela ukusetshenziswa kwezingubo eziwugqinsi ngaphandle kwengozi ye-delamination, okwandisa ngokuqondile ubuningi bezinto ezisebenzayo kanjalo nomthamo weseli (mAh/g).
Impilo Yomjikelezo Enwetshiwe:Ngokuvimbela ukulahleka kokusebenza okusebenzayo kanye nokugcina ukumelana okuphansi kwangaphakathi, amabhethri agcina umthamo wawo -imijikelezo yokushajwa eminingi eyengeziwe.
Amandla Athuthukisiwe Wokushaja{0}}Isakhiwo se-electrode esiqinile esinokumelana okuncane sibalulekile ekuphatheni imisinga ephezulu ehilelekile ekushajweni okusheshayo ngaphandle kokuwohloka.
Isivuno Esengeziwe Sokukhiqiza:Ukwehliswa kwezinsalela ezivela ekulimaleni kokumboza kanye nokuvumelana kwenqubo okuthuthukisiwe kuholela ekusebenzeni kahle kokukhiqiza okuphezulu kanye nezindleko eziphansi.
I-Eco{{0}Inqubo Yobungani:Ukwelashwa kwe-Corona kuyinqubo eyomile, encibilikayo-esebenzisa ugesi nomoya kuphela, ehambisana nezimiso eziluhlaza zomkhakha wamabhethri.
Ukuhlanganisa Nokulawula Inqubo
Izilaphe ze-corona zesimanje zakhelwe ukuhlanganiswa okungenamthungo ku-roll eqhubekayo-kuya{1}}imigqa yokuhlanganisa i-electrode roll. Amapharamitha angukhiye afana namandla, imvamisa, negebe lika-electrode alawulwa ngokunembile ukuze kuqinisekiswe ukwelashwa okufanayo kubo bonke ububanzi bewebhu ngaphandle kokulimaza ucwecwe oluthambile. Ukungashisi- kwemvelo yenqubo futhi kusho ukuthi akukho ukushisa{5}}okubangelwa ukuwohloka kwe-foil noma{6}}okufakwe ngaphambili.
Isiphetho
Emncintiswaneni ophakeme wamabhethri angcono, aphephile, futhi amade-ahlala isikhathi eside, ukwenza ngokugcwele zonke izigaba zenqubo yokukhiqiza kubaluleke kakhulu. Ukwelapha i-Corona akusona nje isithuthukisi ozikhethela sona; kuwubuchwepheshe obuyisisekelo bobuchwepheshe bokufinyelela amazinga obuqotho be-electrode edingwa{2}}izinhlelo zokusebenza zesizukulwane esilandelayo. Ngokuguqula ngokuyisisekelo izakhiwo ezingaphezulu zabaqoqi bamanje, kwakha isibopho esinganqamuki nesembozo esisebenzayo, sivula indlela yamabhethri aletha amandla aphezulu, ukubekezela okukhulu, nokwethembeka okungantengantengi.