Kungani iphepha le-graphite lihambisa ugesi?
Ngenxa yokuthi i-graphite iqukethe amashaji ahamba mahhala, izindleko zihamba ngokukhululeka ngemva kokufakwa kukagesi ukuze zenze okwamanje, ngakho-ke ingakwazi ukuqhuba ugesi. Isizathu sangempela sokuthi kungani igraphite ihambisa ugesi ukuthi ama-athomu ekhabhoni ayi-6 abelana ngama-electron angu-6 ukuze akhe ibhondi enkulu engu-∏66 nama-electron angu-6 nezikhungo ezingu-6. Kuringi yekhabhoni yongqimba olufanayo lwegraphite, wonke amaringi anamalungu angu-6 akha isistimu ehlanganisiwe engu-∏-∏. Ngamanye amazwi, kwiringi yekhabhoni yongqimba olufanayo lwegraphite, wonke ama-athomu ekhabhoni akha ibhondi enkulu ∏, futhi wonke ama-electron akule bhondi enkulu ∏ angageleza ngokukhululekile ongqimbeni, okuyisizathu esenza iphepha le-graphite likwazi ukuqhuba. ugesi.
I-graphite iyisakhiwo se-lamellar, futhi kukhona ama-electron amahhala angaboshiwe phakathi kwezingqimba. Ngemuva kokufakwa kukagesi, bangahamba ngendlela. Cishe zonke izinto ziqhuba ugesi, kuyindaba nje yokuphikiswa. Isakhiwo se-graphite sinquma ukuthi inokumelana okuncane kakhulu phakathi kwezakhi ze-carbon.
Umgomo we-conductive wephepha le-graphite:
I-Carbon iyi-athomu e-tetravalent. Ngakolunye uhlangothi, njengama-athomu ensimbi, ama-electron angaphandle alahleka kalula. Ikhabhoni inama-electron ambalwa angaphandle. Ifana kakhulu nezinsimbi, ngakho ine-conductivity ethile kagesi. , kuzokwenziwa ama-electron amahhala nezimbobo ezihambisanayo. Ngokuhambisana nama-electron angaphandle angalahleka kalula i-carbon, ngaphansi kwesenzo somehluko ongase ube khona, kuzoba nokunyakaza nokugcwalisa izimbobo. Dala ukugeleza kwama-electron. Lesi yisimiso sama-semiconductors.
Isikhathi sokuthumela: Mar-14-2022