Ofufuza alosera za netiweki yatsopano ya kaboni, yofanana ndi graphene, koma yokhala ndi kapangidwe kake kovuta kwambiri, komwe kungayambitse mabatire abwino amagetsi. Graphene mwina ndi mtundu wodziwika bwino wa kaboni. Yagwiritsidwa ntchito ngati lamulo latsopano lamasewera aukadaulo wa batire ya lithiamu-ion, koma njira zatsopano zopangira zimatha kupanga mabatire ambiri ogwiritsa ntchito mphamvu zambiri.
Graphene imawoneka ngati netiweki ya maatomu a kaboni, komwe atomu iliyonse ya kaboni imalumikizidwa ndi maatomu atatu a kaboni oyandikana nawo kuti apange ma hexagon ang'onoang'ono. Komabe, ofufuzawo akuganiza kuti kuwonjezera pa kapangidwe ka uchi mwachindunji kameneka, mapangidwe ena amathanso kupangidwa.
Ichi ndi chinthu chatsopano chomwe chinapangidwa ndi gulu lochokera ku University of Marburg ku Germany ndi Aalto University ku Finland. Iwo anakoka maatomu a kaboni kupita mbali zatsopano. Netiweki yotchedwa biphenyl imapangidwa ndi ma hexagon, ma squares ndi ma octagons, omwe ndi grid yovuta kwambiri kuposa graphene. Ofufuzawo akuti, chifukwa chake, ili ndi zinthu zamagetsi zosiyana kwambiri, komanso mwanjira zina, zomwe zimafunidwa kwambiri.
Mwachitsanzo, ngakhale kuti graphene imayamikiridwa chifukwa cha luso lake monga semiconductor, netiweki yatsopano ya kaboni imachita zinthu ngati chitsulo. Ndipotu, ikakhala ndi maatomu 21 okha m'lifupi, mizere ya netiweki ya biphenyl ingagwiritsidwe ntchito ngati ulusi woyendetsa zida zamagetsi. Ananenanso kuti pamlingo uwu, graphene imachitabe zinthu ngati semiconductor.
Wolemba wamkulu anati: "Mtundu watsopano wa netiweki ya kaboni uwu ungagwiritsidwenso ntchito ngati chinthu chabwino kwambiri cha anode cha mabatire a lithiamu-ion. Poyerekeza ndi zipangizo zamakono zopangidwa ndi graphene, uli ndi mphamvu yosungira lithiamu yambiri."
Anode ya batire ya lithiamu-ion nthawi zambiri imapangidwa ndi graphite yofalikira pa foil yamkuwa. Ili ndi mphamvu zamagetsi zambiri, zomwe sizofunikira kokha pakuyika ma lithiamu ion pakati pa zigawo zake, komanso chifukwa imatha kupitiliza kutero kwa ma cycle ambiri. Izi zimapangitsa kuti ikhale batire yogwira ntchito bwino kwambiri, komanso batire yomwe ingakhalepo kwa nthawi yayitali popanda kuwonongeka.
Komabe, njira zina zogwira mtima komanso zazing'ono zochokera pa netiweki yatsopano ya kaboni iyi zingapangitse kuti malo osungira mphamvu za mabatire azikhala ovuta kwambiri. Izi zingapangitse magalimoto amagetsi ndi zida zina zomwe zimagwiritsa ntchito mabatire a lithiamu-ion kukhala ochepa komanso opepuka.
Komabe, monga graphene, kupeza momwe angapangire mtundu watsopanowu pamlingo waukulu ndi vuto lotsatira. Njira yopangira pano imadalira pamwamba pa golide wosalala kwambiri pomwe mamolekyu okhala ndi kaboni amapanga unyolo wa hexagonal wolumikizidwa poyamba. Zotsatira zake zimalumikiza unyolo uwu kuti upange mawonekedwe a sikweya ndi octagonal, zomwe zimapangitsa kuti zotsatira zake zikhale zosiyana ndi graphene.
Ofufuzawo anafotokoza kuti: “Lingaliro latsopano ndikugwiritsa ntchito zinthu zosinthira mamolekyu kuti apange biphenyl m'malo mwa graphene. Cholinga chake tsopano ndikupanga mapepala akuluakulu azinthu kuti zinthu zake zimveke bwino.”
Nthawi yotumizira: Januwale-06-2022
