Ochita kafukufuku adaneneratu za mpweya watsopano wa carbon, wofanana ndi graphene, koma ndi microstructure yovuta kwambiri, yomwe ingapangitse mabatire abwino a galimoto yamagetsi.Graphene ndiye mosakayikira mtundu wodziwika bwino kwambiri wa kaboni.Zapangidwa ngati lamulo latsopano lamasewera laukadaulo wa batri la lithiamu-ion, koma njira zatsopano zopangira zimatha kupanga mabatire owonjezera mphamvu.
Graphene imatha kuwonedwa ngati maukonde a maatomu a kaboni, pomwe atomu iliyonse ya kaboni imalumikizidwa ndi ma atomu atatu oyandikana ndi kaboni kuti apange timagawo ting'onoting'ono tating'onoting'ono.Komabe, ofufuzawo akuganiza kuti kuwonjezera pa kapangidwe ka zisa zachindunjizi, zida zina zitha kupangidwanso.
Izi ndi zatsopano zomwe zapangidwa ndi gulu lochokera ku yunivesite ya Marburg ku Germany ndi yunivesite ya Aalto ku Finland.Ananyengerera maatomu a kaboni kunjira zatsopano.Maukonde otchedwa biphenyl network amapangidwa ndi ma hexagon, mabwalo ndi ma octagons, omwe ndi gridi yovuta kwambiri kuposa graphene.Ofufuzawo amanena kuti, choncho, ali ndi zosiyana kwambiri, ndipo mwazinthu zina, zofunika kwambiri zamagetsi zamagetsi.
Mwachitsanzo, ngakhale kuti graphene ndi yamtengo wapatali chifukwa cha luso lake monga semiconductor, mpweya watsopano wa carbon umakhala ngati chitsulo.M'malo mwake, pomwe ma atomu 21 okha m'lifupi, mikwingwirima ya netiweki ya biphenyl imatha kugwiritsidwa ntchito ngati ulusi wowongolera pazida zamagetsi.Iwo adanenanso kuti pamlingo uwu, graphene akadali ngati semiconductor.
Wolemba wamkulu adati: "Mtundu watsopanowu wa netiweki ya kaboni ungagwiritsidwenso ntchito ngati zinthu zabwino kwambiri za anode zamabatire a lithiamu-ion.Poyerekeza ndi zida zaposachedwa za graphene, ili ndi mphamvu yayikulu yosungira lithiamu. ”
Anode ya batri ya lithiamu-ion nthawi zambiri imakhala ndi graphite yofalikira pazithunzi zamkuwa.Lili ndi ma conductivity apamwamba amagetsi, zomwe sizofunikira kuti zikhazikike mosinthika ma ion a lithiamu pakati pa zigawo zake, komanso chifukwa zimatha kupitiriza kutero kwa maulendo ambirimbiri.Izi zimapangitsa kukhala batire yogwira mtima kwambiri, komanso batire yomwe imatha kukhala kwa nthawi yayitali popanda kuwonongeka.
Komabe, njira zina zogwirira ntchito komanso zing'onozing'ono zochokera ku carbon network yatsopanoyi zingapangitse kusungirako mphamvu kwa batri kukhala kovuta kwambiri.Izi zitha kupanga magalimoto amagetsi ndi zida zina zomwe zimagwiritsa ntchito mabatire a lithiamu-ion kukhala ochepa komanso opepuka.
Komabe, monga graphene, kudziwa momwe mungapangire mtundu watsopanowu pamlingo waukulu ndiye vuto lotsatira.Njira yamakono yolumikizira imadalira golide wosalala kwambiri pomwe mamolekyu okhala ndi kaboni poyambilira amapanga maunyolo olumikizana ndi hexagonal.Zochita zotsatila zimalumikiza maunyolowa kuti apange masikweya ndi ma octagonal, zomwe zimapangitsa kuti chomalizacho chikhale chosiyana ndi graphene.
Ofufuzawo anafotokoza kuti: “Lingaliro latsopanoli ndi kugwiritsa ntchito kalambulabwalo wa mamolekyu osinthidwa kuti apange biphenyl m’malo mwa graphene.Cholinga chake ndi kupanga mapepala akuluakulu kuti amvetsetse bwino zinthu zake.”
Nthawi yotumiza: Jan-06-2022