Vim li cas daim ntawv graphite ua hluav taws xob?
Vim tias Graphite muaj cov nqi txav chaw dawb, cov nqi txav mus los xis hluav taws xob kom tsim tau tam sim no, yog li nws tuaj yeem ua hluav taws xob tam sim no, yog li nws tuaj yeem ua hluav taws xob tam sim no, yog li nws tuaj yeem ua hluav taws xob tam sim no, yog li nws tuaj yeem ua hluav taws xob tam sim no, yog li nws tuaj yeem ua hluav taws xob tam sim no Qhov tseeb vim li cas graphite coj hluav taws xob yog tias 6 carbon atoms qhia tawm 6 lub tshuab hluav taws xob los ua tus loj π66 khi nrog 6 eleces. Nyob rau hauv cov pa roj carbon nplhaib ntawm tib txheej ntawm graphite, tag nrho 6-tus tswv cuab ua ib qho kev kaw lus π-π conjugated system. Hauv lwm lo lus, hauv cov pa roj carbon monoxide ntawm tib lub graphite, txhua lub tshuab hluav taws xob ua rau muaj qhov laj thawj loj loj hauv ib qho, thiab txhua yam vim li cas graphite ntawv tuaj yeem ua hluav taws xob.
Graphite yog ib tus qauv Lamellar, thiab muaj cov hluav taws xob dawb uas tsis sib khi ntawm cov khaubncaws sab nraud povtseg. Tom qab hluav taws xob, lawv tuaj yeem txav tawm ntawm kev tawm. Txhua yam tshuaj ua hluav taws xob, nws tsuas yog muaj teeb meem ntawm resistivity. Cov qauv ntawm graphite txiav txim siab tias nws muaj qhov me me tiv taus ntawm cov roj carbon.
Cov ntsiab cai ntawm cov ntawv ntawm graphite daim ntawv:
Carbon yog tetravalent Atom. Ntawm ib sab tes, ib yam li cov matal atoms, cov tshuab hluav taws xob outermost tau yooj yim ploj. Cov pa roj muaj tsawg dua roj. Nws yog qhov zoo heev rau cov hlau, yog li nws muaj qee yam hluav taws xob. , Ntsuas cov hluav taws xob dawb thiab lub qhov yuav tsim tawm. Coupled nrog lub txheej txheem txheej txheem sab nraud uas cov pa roj carbon tau yooj yim poob, hauv qab kev ua ntawm lub peev xwm sib txawv, yuav muaj kev txav mus los thiab sau lub qhov. Tsim kom muaj kev ntws ntawm cov tshuab hluav taws xob. Nov yog lub hauv paus ntsiab lus ntawm semiconductors.
Lub Sijhawm Post: Mar-14-2022