Isakhiwo esincane (isakhiwo sekristalu) se-graphitized petroleum coke sinjani?

I. Izici Zesakhiwo Sekristalu

Isakhiwo Esinezingqimba: Isakhiwo sekristalu se-graphitized petroleum coke sakhiwe ngamanethiwekhi ahleliwe ama-athomu e-carbon ayisithupha. Lawa manethiwekhi ahleliwe ahlanganiswe ungqimba ngengqimba, akha isakhiwo esijwayelekile esinezingqimba. Lezi zingqimba zixhunywe ngamandla abuthakathaka e-van der Waals, anika i-graphite i-lubricity kanye ne-anisotropy.
Ama-Lattice Constants: Ngemva kokwelashwa kwe-graphitization, ama-lattice constants (a₀ kanye ne-c₀) e-petroleum coke asondela kulawo e-graphite yemvelo, okubonisa izinga eliphezulu lokufana kwezakhiwo zawo zekristalu. Lesi sici sesakhiwo senza i-graphitized petroleum coke ibonise ukuhanjiswa kukagesi nokushisa okuhle kakhulu.
Amapharamitha e-Microcrystalline: Ukusebenzisa i-X-ray diffraction, amapharamitha anjenge-interlayer spacing (d₀₀₂), i-average layer diameter (Lₐ), kanye ne-stacking height (Lc) yama-microcrystals ku-graphitized petroleum coke angabalwa. Lawa mapharamitha abonisa usayizi kanye nokuhleleka kwama-microcrystals futhi asebenza njengezinkomba ezibalulekile zokuhlola izinga le-graphitization.

II. Imiphumela Yenqubo Yokwenza I-Graphitization

Ukuguquka kusuka ku-Amorphous kuya ku-Crystalline State: Ngaphambi kokuguqulwa kwe-graphitization, isakhiwo se-carbon se-petroleum coke asiguquki, sibonakala ngesakhiwo sezinto "esingahlelekile, esihleliwe ibanga elide". Ngokwelashwa kwe-graphitization (ngokuvamile okwenziwa emazingeni okushisa aphezulu asukela ku-2500°C kuya ku-3000°C), i-carbon engaguquki kancane kancane iguquka ibe yisakhiwo se-graphite crystal esinezinhlangothi ezintathu esihleliwe.
Ukwanda Kosayizi We-Microcrystalite: Ngesikhathi se-graphitization, ubukhulu obujwayelekile (Lc) nobubanzi (Lₐ) bama-flakes e-carbon lattice buyanda, kuyilapho isikhala se-interlayer (d) sincipha. Lokhu kuphumela ekwandeni kosayizi we-microcrystalite kanye nesakhiwo sekristalu esiphelele kakhudlwana.
Ukwehla Kokumelana: Njengoba izinga lokuguqulwa kwe-graphitization likhula, ukuqina kwe-graphitized petroleum coke kwehla kakhulu. Lokhu kungenxa yokuthi, ngesikhathi sokuguqulwa kwe-graphitization, ukuhlelwa kwama-athomu e-carbon kuyahleleka kakhulu, okuvumela ama-electron ukuthi ahambe ngokukhululeka ngaphakathi kwezindiza zezendlalelo, ngaleyo ndlela kuthuthukisa ukuhanjiswa kukagesi.

III. Ubudlelwano Phakathi Kwesakhiwo Esincane Nezakhiwo

Ukuqhuba Ugesi: Isakhiwo sekristalu esinezingqimba se-graphitized petroleum coke senza ama-electron akwazi ukuhamba ngokukhululeka ngaphakathi kwezingqimba, okuholela ekuqhubeni kahle kukagesi. Lesi sici senza i-graphitized petroleum coke isetshenziswe kabanzi ezindaweni ezifana nezinto ze-electrode kanye nezithasiselo zokuqhuba.
Ukuqhuba Ukushisa: Ngenxa yamandla e-van der Waals axhumanisa izendlalelo, ukushisa kungadluliselwa ngokushesha ngaphakathi kwezendlalelo. Ngenxa yalokho, i-graphitized petroleum coke nayo ibonisa ukuqhubela okuhle kokushisa, okwenza ifaneleke ekukhiqizeni izinto zokusabalalisa ukushisa nezinye izinhlelo zokusebenza.
Izakhiwo Zomshini: Isakhiwo sekristalu se-graphitized petroleum coke siyinika amandla athile omshini. Kodwa-ke, uma kuqhathaniswa nezinto zensimbi, isakhiwo sayo esinezingqimba siphumela ekubophweni okubuthakathaka kwezingqimba, okuholela emandleni aphansi okuguquguquka nokucindezela. Lesi sici sokusebenza sinikeza i-graphitized petroleum coke inzuzo yokusetshenziswa ezimweni lapho idinga ukumelana nezingcindezi ezithile kodwa ingadingi amandla aphezulu.