Kev txhim kho lub zog huv thiab rov ua dua tshiab yog lub tswv yim tseem ceeb rau peb lub teb chaws txoj kev loj hlob ntawm kev noj qab haus huv thiab kev lag luam.Nyob rau hauv txhua theem ntawm lub zog tshiab thev naus laus zis, electrochemical zog cia muaj txoj haujlwm tseem ceeb heev, thiab nws tseem yog qhov teeb meem kub hauv kev tshawb fawb txog tam sim no.Raws li ib hom tshiab ntawm ob-dimensional qauv conductive cov ntaub ntawv, daim ntawv thov ntawm graphene muaj ib qho tseem ceeb thiab kev loj hlob muaj peev xwm nyob rau hauv daim teb no.
Graphene kuj yog ib qho kev txhawj xeeb tshaj plaws ntawm cov ntaub ntawv tshiab.Nws cov qauv yog tsim los ntawm ob symmetrical, nested sub-lattices.Doping nrog heterogeneous atoms yog ib txoj hauv kev tseem ceeb los rhuav tshem cov qauv symmetric thiab hloov kho nws lub cev.Nitrogen atoms muaj qhov loj me ze ntawm cov pa roj carbon atoms thiab yooj yim rau doped rau hauv cov lattice ntawm graphene.Yog li ntawd, nitrogen doping plays lub luag haujlwm tseem ceeb hauv kev tshawb fawb ntawm graphene cov ntaub ntawv.Kev hloov pauv nrog doping tuaj yeem siv los hloov cov khoom hluav taws xob ntawm graphene thaum lub sijhawm kev loj hlob.
Graphene doped nrog nitrogentuaj yeem qhib qhov sib txawv ntawm lub zog thiab kho cov khoom siv hluav taws xob, hloov cov qauv hluav taws xob, thiab ua kom cov neeg nqa khoom dawb ceev, yog li txhim kho cov conductivity thiab stability ntawm graphene.Tsis tas li ntawd, kev qhia txog nitrogen-muaj atomic qauv rau hauv cov kab sib chaws ntawm graphene tuaj yeem ua rau cov chaw nquag adsorbed ntawm graphene nto, yog li txhim kho kev sib cuam tshuam ntawm cov hlau hais thiab graphene.Yog li ntawd, daim ntawv thov ntawm nitrogen-doped graphene rau lub zog cia khoom muaj ntau superior electrochemical kev ua tau zoo, thiab yuav tsum tau ib tug high-kev kawm electrode khoom.Cov kev tshawb fawb uas twb muaj lawm kuj qhia tau hais tias nitrogen-doped graphene tuaj yeem txhim kho cov yam ntxwv muaj peev xwm, muaj peev xwm ceev thiab tso tawm thiab lub neej voj voog ntawm cov khoom siv hluav taws xob, thiab muaj peev xwm siv tau loj heev hauv thaj chaw ntawm lub zog cia.
Nitrogen-doped graphene yog ib txoj hauv kev tseem ceeb kom paub txog kev ua haujlwm ntawm graphene, thiab nws ua lub luag haujlwm tseem ceeb hauv kev nthuav dav daim ntawv thov.N-doped graphene tuaj yeem txhim kho tus yam ntxwv muaj peev xwm, kev them nqi sai thiab kev tso tawm thiab lub neej voj voog ntawm cov khoom siv hluav taws xob, thiab muaj peev xwm siv tau loj hauv cov khoom siv hluav taws xob xws li supercapacitors, lithium ion, lithium sulfur thiab lithium cua roj teeb.
Yog tias koj txaus siab rau lwm cov haujlwm ua haujlwm graphene, thov tsis txhob yig tiv tauj peb.Kev pabcuam kho kom haum ntxiv yog muab los ntawm Hongwu Nano.
Post lub sij hawm: Jun-01-2021