Lisebelisoa tse ncha tsa electrode ea graphite li fihletse lintlafatso tse kholo thepa ea mechini, thepa ea mocheso, botsitso ba lik'hemik'hale le bokhoni ba ho sebetsa. Li emetsoe ke graphite e matlafalitsoeng ke carbon fiber le graphite ea isostatic, katleho ea tsona ea mantlha ea ts'ebetso le boleng ba ts'ebeliso ke tse latelang:
I. Graphite e Matlafalitsoeng ke Faeba ea Khabone: Ntlafatso e Fetohileng Matleng a Mechini
1. Matla le ho phahama ha Modulus
Ka ho kenya tekanyo e nyane ea graphene (0.075 wt%) ka har'a likhoele tsa khabone tsa PAN, matla a tsona a ho thaepa a fihla ho 1916 MPa, 'me modulus ea Young e fihla ho 233 GPa, e emelang keketseho ea 225% le 184%, ka ho latellana, ha e bapisoa le likhoele tsa khabone tsa PAN tse hloekileng. Katleho ena e hlaha ka lebaka la ntlafatso ea graphene ea sebopeho se senyenyane sa khabone:
- Phokotso ea masoba a ka hare: Ho eketsoa ha graphene ho fokotsa boholo ba masoba a ka hare le masoba ka har'a likhoele haholo, hoo e batlang e felisa li-micropores tsa axial maemong a holimo (0.1 wt%), ka hona ho fokotsa lintlha tsa mahloba a khatello.
- Sebopeho sa graphite se laetsoeng: Raman spectroscopy e senola hore maqephe a nano a graphene a pota-potiloe ke sebopeho sa graphite se entsoeng nakong ea carbonization ea PAN, e leng se fellang ka lekhoakhoa la graphite le felletseng haholoanyane le nang le liphoso tse fokolang le tataiso e ntlafalitsoeng ea kristale.
2. Maemo a Atolositsoeng a Kopo
- Sefofane: Metswako ya graphite e matlafaditsweng ka khabone, e nang le boima ba 60% feela ba motsoako wa aluminium le bokgoni ba ho bopjwa e le karolo e le nngwe (ho fokotsa tshebediso ya difaene), e sebediswa haholo dikarolong tsa sebopeho sa sefofane (mohlala, tshebediso ya 50% ya thepa e kopaneng ho Boeing B-787), dibopeho tsa dikoloi tse qalang, le dikarolong tsa sathelaete.
- Tlhahiso ea maemo a holimo: Ho hanyetsa ha tsona ho ntša metsi ho li etsa hore e be tsa bohlokoa bakeng sa li-nozzle tsa enjene ea rokete, meaho ea mantlha ea reactor ea nyutlelie, le libaka tse ling tse feteletseng.
II. Graphite e sa fetoheng: Liphetho tse Felletseng ho pholletsa le Thepa e 'Mele
1. Thepa ea Mekaniki: Litšepe tse Fetang Tse Tloaelehileng
- Matla a phahameng le isotropy: Ka ho hatella ka isostatic, matla a eona a ho thapolla a feta 1000 MPa (a feta litšepe tse tloaelehileng haholo), ka karolelano ea isotropy ea 1.0–1.1, e felisang liphoso tsa anisotropic tsa graphite e tloaelehileng.
- E na le boima bo phahameng le ho hanyetsa ho tsofala: Ka boima ba eona ba 1.95 g/cm³, matla a ho kobeha a fetang 80 MPa, le matla a ho hatella a tlohang ho 200–260 MPa, e loketse ho etsa li-brake pad, litiiso le li-bearing tse sebetsang hantle.
2. Thepa ea Thermal: Botsitso Tlas'a Maemo a Feteletseng
- Ho hanyetsa mocheso o phahameng le ho hanyetsa ho thothomela ha mocheso: Libakeng tse se nang letho, matla a eona a mechini a fihla sehlohlolong ho 2500°C, ka ntlha ea ho qhibiliha ea 3650°C le ntlha ea ho belisa ea 4827°C. Coefficient ea eona e tlase ea katoloso ea mocheso e fokotsa liphetoho tsa boholo, e leng se etsang hore e be e loketseng li-electrode tsa ho itsamaisa tsa rokete, li-nozzle le likarolo tse ling tsa mocheso o phahameng.
- Ho tsamaisa mocheso ka lebelo le phahameng: Ho tsamaisa mocheso ka lebelo le phahameng ho nolofalletsa ho qhalana ha mocheso ka potlako, ho ntlafatsa bokgoni ba disebediswa, jwalo ka dikarolong tsa tshimo ya mocheso wa ontong ya mofuta wa CZ (di-crucible, di-heater).
3. Botsitso ba Lik'hemik'hale: Khanyetso ea ho Sila le Khanyetso ea Oxidation
E lula e tsitsitse ka har'a li-acid tse matla, li-alkali le li-solvent tsa tlhaho, e hanela khoholeho e tsoang litšepeng tse qhibilihisitsoeng le khalase, e leng se etsang hore e lokele lijana tsa lik'hemik'hale, meaho ea mantlha ea reactor ea nyutlelie le libaka tse ling tse senyang.
4. Ho sebetsa hantle: Ho tenyetseha le ho nepahala
E ka etsoa ka mochini ka sebopeho sefe kapa sefe ho fihlela litlhoko tse rarahaneng tsa moralo, joalo ka li-electrode bakeng sa ho lahla motlakase le liforomo tsa graphite bakeng sa ho lahla tšepe ka mokhoa o tsoelang pele.
III. Litaelo tsa Ntlafatso ea Liindasteri le tsa Bokamoso tsa Lisebelisoa tse Ncha tsa Graphite Electrode
1. Tswelopele ya Ntlafatso ya Diindasteri
- Graphite e sa fetoheng: Karolo ea eona ea 'maraka oa lefats'e e ntse e eketseha, ka keketseho ea bokhoni Indonesia le Morocco e matlafatsang boemo ba eona ba indasteri.
- Graphite e matlafalitsoeng ke faeba ea khabone: E amohetsoe ka katleho ke bareki ba pele ba libeteri ba machabeng 'me e etella pele nts'etsopele ea maemo a pele a machaba lefatšeng,Tlhaloso e qaqileng e se nang letho bakeng sa Lisebelisoa tsa Anode tsa Nano-Silicon bakeng sa Libetri tsa Lithium-Ion.
2. Lintlafatso tsa Theknoloji tsa Nakong e Tlang
- Ntlafatso ea thepa e tala: Ho fokotsa boholo ba likaroloana tse kopaneng (mohlala, ka phetoho ea phofo ea coke ea bobeli ho 2–5 μm) ho ntlafatsa litšobotsi tsa mechini.
- Ntlafatso ea theknoloji ea Graphitization: Theknoloji ea graphitization ea microwave e fokotsa tšebeliso ea matla ka 30% mme e khutsufatsa lipotoloho tsa tlhahiso, e leng se nolofalletsang ho amoheloa ka bongata.
- Boqapi ba sebopeho: Mohlala, di-anode tsa grafiti tse nang le mahlakore a mabedi di fihlella bokgoni ba ho tjhaja ka potlako ba metsotso e 6, 60% ha di ntse di boloka matla a ≥230 Wh/kg ka kabo ya mahlakore a mabedi ya boholo ba dikarolwana le masoba.
Nako ea poso: Phupu-31-2025