Seoul Tech yateguye ingamba nshya zo gusharija bateri vuba cyane kugira ngo hirindwe ko Lithium yangiza ubuzima

Iterambere ryihuse ry’imodoka zikoresha amashanyarazi n’ibikoresho by’ikoranabuhanga bikoresha ingufu nyinshi ryatumye hakenerwa bateri za lithium ion zikoresha ingufu nyinshi cyane. Nyamara, bateri za lithium ion zikoreshwa ubu zihura n’ikibazo cyo kwangirika gukomeye kw’amashanyarazi mu gihe cyo gusharija vuba kandi bishobora no gutuma habaho kwangirika gukomeye, ibyo bikaba byateza ibibazo by’umutekano. Ibi ahanini bituruka ku kudahuza kw’amashanyarazi ku gice cya anode electrolyte, bigatera imiterere mibi ya lithium y’icyuma ku buso bwa bateri no kudakomera neza k’ubushyuhe.
Mu myaka ya vuba aha, ibikoresho bya anode ifite voltage nyinshi byabaye amahitamo meza cyane yo kubuza litiyumu gucukurwa cyane no gushyiraho imiterere ya electrolyte interphase (SEI) itajegajega. Nubwo bimeze gutyo, ibikoresho bigezweho biracyari mu kaga bitewe n’imikorere idashimishije ya ioni ndetse no kudahinduka kw’ubushyuhe, ibyo bigatuma ingufu zisohoka kandi zigatuma zitizewe mu gihe kirekire.

Nk’uko byatangajwe n’itangazamakuru ryo mu mahanga, kugira ngo bikemure ibi bibazo, itsinda ry’abashakashatsi riyobowe na Porofeseri wungirije Dongwook Han muri Kaminuza Nkuru y’Ubumenyi n’Ikoranabuhanga ya Seoul ryakoze ibikoresho bya lithium titanium phosphate anode bita stoichiometric (OS) bifite imiterere ya NASICON. Ibi bikoresho bizwi cyane kubera imiterere idasanzwe n’ubushyuhe. Imiterere yabyo ishobora gutuma habaho impinduka mu buryo bwikora munsi y’ubuso bw’uduce tw’ibikoresho bikora kugira ngo bice mu buryo bubuza ibintu gukora neza kandi bigere ku musaruro uhamye wo kwihutisha.
Ibyavuye mu bushakashatsi bifitanye isano byasohotse mu kinyamakuru Advanced Functional Materials.

Guhindura Ubuso mu Gutwara Iyoni Yihuta

Lithium titanium phosphate (LTP) ifite imiterere ya sodium super ionic conductor (NASICON), ifite ubushobozi bwo kuguma mu miterere no mu bushyuhe ndetse n'imiyoboro ya lithium ion yihuta. Kugira ngo bagere ku bushobozi bwayo bwose, abashakashatsi bafashe ingamba zo gushushanya ibintu bitari stoichiometric maze bongera nkana igipimo cya fosifore (P) na titanium (Ti). Iyo miterere idafite titanium ikora uturere twa titanium phosphate (TPO) hafi y'ubuso bw'uduce twa LTP.
Utu duce dukungahaye kuri TPO dukora nk'imiyoboro ya kinetic ikora neza cyane, bigabanya imbogamizi z'ingufu zo gutwara litiyumu kuri anode electrolyte interface kandi byubaka inzira zo kohereza ioni vuba hafi y'ubuso bw'uduce. Byongeye kandi, imigozi ya P-O-P yoroshye cyane muri TPO itanga ubworoherane mu miterere yayo kugira ngo ihuze n'ihindagurika ry'ingano mu gihe cyo kwihutisha gusharija no kurinda imiterere ya NASICON kwangirika bidasubirwaho.

Imikorere ihamye mu bihe byo gusharija vuba

Bityo, mu bizamini by’ubushobozi bw’umuvuduko, ikimenyetso cy’ingenzi gipima ubushobozi bwo gusharija vuba, anode ya OS-LTP-carbon (OS-LTP/C) yagumanye 86% by’ubushobozi bwayo bwa mbere munsi y’igipimo cyo gusharija cya 10C, mu gihe ubushobozi bwa anode ya LTP/C isanzwe bwagabanutse cyane.
Iyi porogaramu kandi itanga ubushobozi bwo gusiganwa neza nyuma y’amasaha arenga 250. Imiterere y’uturemangingo twuzuye igaragaza imikorere myiza kandi ijyanye neza na cathode zifite voltage nyinshi.

Inzira yagutse igana kuri bateri zitekanye

Han yagize ati: “Uburyo bwacu butanga uburyo bushya bwo gushushanya bateri zisharishwa vuba, kandi bushobora gukoreshwa cyane mu buryo bwinshi bwo kubika ingufu mu gihe kizaza harimo na bateri zikomeye.” “Ubu buryo bwo gushushanya bushobora gutuma imodoka zikoresha amashanyarazi zirushaho kuba ingirakamaro mu kugabanya igihe cyo gusharishwa, kunoza umutekano no gutanga inkunga ku miyoboro y’amashanyarazi ikoreshwa mu kongera ingufu.”
Mu gusoza, iyi ngamba yo gushushanya idakoresha ikoranabuhanga risanzwe rikemura imwe mu mbogamizi zikomeye bateri zishobora kongera gukoreshwa zihura nazo kandi itanga uburyo bwiza bwo kubika ingufu ziteguye gukoreshwa mu bucuruzi.