Kutheni iphepha legraphite liqhuba umbane?
Ngenxa yokuba i-graphite iqulethe iintlawulo ezihamba simahla, iintlawulo zihamba ngokukhululekileyo emva kokufakelwa kombane ukuze zenze umsinga, ngoko unokuqhuba umbane. Esona sizathu sokuba igraphite iqhube umbane kukuba iiathom zekhabhoni ezi-6 zabelana ngee-electron ezi-6 ukwenza ibhondi enkulu ∏66 kunye neeelectron ezi-6 kunye namaziko ama-6. Kwiringi yekhabhoni yomaleko ofanayo wegraphite, onke amakhonkco anamalungu ama-6 enza inkqubo ∏-∏ conjugated. Ngamanye amazwi, kwiringi yekhabhoni yoluhlu olufanayo lwegraphite, zonke iiathom zekhabhoni zenza ibhondi enkulu ∏, kwaye zonke iielectron ezikolu bhondi ∏ ∏ zikhulu zinokuhamba ngokukhululekileyo kumaleko, seso sizathu sokuba iphepha legraphite likwazi ukuqhuba. umbane.
I-graphite yisakhiwo se-lamellar, kwaye kukho ii-electron zamahhala ezingadityaniswanga phakathi kweengqimba. Emva kokufakelwa kombane, banokuhamba ngendlela. Phantse zonke izinto ziqhuba umbane, yinto nje yokuxhathisa. Ubume begraphite bumisela ukuba ineyona nto incinci yokuxhathisa phakathi kwezinto zekhabhoni.
Umgaqo wokuqhuba wephepha legraphite:
Ikhabhoni yiathom ene-tetravalent. Kwelinye icala, njengee-athom zentsimbi, ezona electron zingaphandle zilahleka lula. Ikhabhoni ineelektroni ezimbalwa ezingaphandle. Ifana kakhulu neentsimbi, ngoko ke ine-conductivity ethile yombane. , ii-electron ezihambelanayo kunye nemingxuma ziya kuveliswa. Idityaniswe nee-electron zangaphandle ezinokuthi i-carbon ilahlekelwe lula, phantsi kwesenzo sokwahlukana okunokwenzeka, kuya kubakho intshukumo kwaye igcwalise imingxuma. Yenza ukuhamba kwee-electron. Lo ngumgaqo-siseko wee-semiconductors.
Ixesha lokuposa: Mar-14-2022