Chifukwa chiyani pepala la graphite limatulutsa magetsi?
Chifukwa graphite ili ndi zolipiritsa zaulere, zolipiritsa zimayenda momasuka pambuyo pamagetsi kuti apange zamakono, kotero zimatha kuyendetsa magetsi. Chifukwa chenicheni chomwe graphite imapangira magetsi ndikuti ma atomu 6 a kaboni amagawana ma elekitironi 6 kupanga cholumikizira chachikulu ∏66 chokhala ndi ma elekitironi 6 ndi malo 6. Mu mphete ya carbon ya graphite yomweyi, mphete zonse za 6 zimapanga ∏-∏ conjugated system. Mwa kuyankhula kwina, mu mphete ya kaboni ya gawo lomwelo la graphite, maatomu onse a kaboni amapanga chomangira chachikulu ∏, ndipo ma elekitironi onse omwe ali mu chomangira chachikuluchi amatha kuyenda momasuka mu wosanjikiza, chifukwa chake pepala la graphite limatha kuyendetsa. magetsi.
Graphite ndi kapangidwe ka lamellar, ndipo pali ma elekitironi aulere omwe samalumikizana pakati pa zigawozo. Pambuyo pa magetsi, amatha kuyenda molunjika. Pafupifupi zinthu zonse zimayendetsa magetsi, ndi nkhani ya resistivity. Mapangidwe a graphite amatsimikizira kuti ali ndi mphamvu yaying'ono kwambiri pakati pa zinthu za carbon.
Mfundo yoyendetsera pepala la graphite:
Carbon ndi atomu ya tetravalent. Kumbali imodzi, mofanana ndi maatomu achitsulo, ma elekitironi akunja amatayika mosavuta. Mpweya uli ndi ma elekitironi ochepa akunja. Ndizofanana kwambiri ndi zitsulo, choncho zimakhala ndi mphamvu zina zamagetsi. , ma elekitironi aulere ofanana ndi mabowo adzapangidwa. Kuphatikizidwa ndi ma elekitironi akunja omwe mpweya ukhoza kutaya mosavuta, pansi pa zomwe zingatheke kusiyana, padzakhala kuyenda ndikudzaza mabowo. Pangani kuyenda kwa ma elekitironi. Iyi ndiye mfundo ya semiconductors.
Nthawi yotumiza: Mar-14-2022