Graphite hauv Hydrogen Systems thiab Roj Cells
Hydrogen zog nyob ntawm cov ntaub ntawv uas nyob rau hauv conductive thiab chemically ruaj khov nyob rau hauv ib tug xav tau ib puag ncig. Hauv cov khoom siv hluav taws xob hloov pauv cov roj hluav taws xob, cov graphite-raws li cov khoom siv feem ntau yog siv rau cov phaj bipolar, roj diffusion txheej thiab lwm yam khoom siv hluav taws xob. Lawv qhov zoo yog ncaj qha: cov hluav taws xob zoo rau kev hloov pauv tam sim no, kev tiv thaiv corrosion nyob rau hauv acidic, ntub pawg ib puag ncig, muaj zog txhua yam, thiab lub neej ua haujlwm ntev.
Porous carbon cov ntaub ntawv kuj tau kawm rau hydrogen cia, qhov chaw siab saum npoo thiab tuneable pore qauv txhawb physisorption thiab tuaj yeem pab txhawb rau cov khoom siv sib zog.
Graphite li Anode hauv Lithium-Ion roj teeb
Graphite tseem yog cov khoom siv anode tseem ceeb hauv kev lag luam lithium- ion cells. Nws cov txheej txheem siv lead ua tso cai rau lithium ions tau ntxig thiab muab rho tawm tau zoo thaum lub sijhawm them thiab tawm, uas muab lub peev xwm thim rov qab ua ke nrog lub voj voog zoo heev. Piv nrog rau lwm cov khoom siv anode, graphite kuj tau txais txiaj ntsig los ntawm cov cuab yeej tsim khoom lag luam, cov saw hlau txhim khu kev qha thiab cov nqi sib tw.
Tsis zoo electrode graphite rau lithium{0}} ion hlwb feem ntau tau teev tseg thiab sim tiv thaiv GB / T 24533, uas suav nrog cov khoom xws li particle loj faib, thaj chaw tshwj xeeb, kais ntom ntom, noo noo thiab electrochemical kev ua tau zoo.
Hluav taws xob tsheb- lub zog siab ceev thiab lub neej voj voog ntev nyob rau hauv kev them nqi ib nrab.
Daim phiaj thiab muaj zog cia- muaj peev xwm ruaj khov tshaj li ntau txhiab lub voj voog thiab qhov kev laus uas xav tau.
Cov khoom siv hluav taws xob- qhov sib npaug ntawm lub zog ntim hauv cov hlwb nyias.
Supercapacitors, Solar Cells thiab Cua Fais Fab
Tshaj li cov roj teeb thiab roj hlwb, graphite thiab carbon cov ntaub ntawv tshwm sim thoob plaws lub zog tshiab. Supercapacitor electrodes cia siab rau tib qho kev sib xyaw ua ke, thaj chaw saum npoo thiab lub voj voog ruaj khov tau piav qhia saum toj no. Nyob rau hauv photovoltaics, cov pa roj carbon txheej ua hauj lwm raws li rov qab electrodes nyob rau hauv perovskite hlwb thiab raws li counter electrodes nyob rau hauv dye-sensitised hlwb, hloov precious hlau nyob rau hauv tus nqi qis thaum uas tseem tau tshaj luam ntawv thiab txheej txheej txheem.
Nyob rau hauv cov cua turbine generators, carbon thiab graphite Cheebtsam yog siv rau conductive txhuam, npleem -ring contact cov ntaub ntawv thiab tam sim no hloov qhov chaw, qhov twg conductivity, hnav tsis kam thiab ruaj khov ua hauj lwm nyob rau hauv tas mus li zog txhim kho cov cuab yeej kev ntseeg tau thiab kev pab lub neej.
| Daim ntawv thov | Lub luag haujlwm ntawm graphite | Lub ntsiab kom zoo dua |
|---|---|---|
| Lithium -Ion roj teeb | Anode active khoom | High reversible muaj peev xwm thiab lub voj voog stability |
| Hydrogen roj cell | Bipolar daim hlau thiab roj diffusion txheej | Conductivity nrog corrosion kuj |
| Supercapacitor | Electrode khoom thiab conductive additive | Siab zog ceev thiab lub neej ntev |
| Hnub ci cell | Rov qab electrode thiab counter electrode | Tus nqi qis nrog kev ruaj ntseg tshuaj zoo |
| Cua zog | Conductive thiab hnav cov khoom | Txhim khu kev hloov tam sim no |
Qhov twg graphite cov ntaub ntawv tab tom mus
Kev txhim kho ua haujlwm ntawm graphite rau kev siv hluav taws xob tshiab tsom mus rau peb cov lus qhia. Kev hloov kho saum npoo lub hom phiaj txhawm rau txhim kho hluav taws xob kev ua tau zoo, tshuaj lom neeg ruaj khov thiab kev sib raug zoo nrog cov electrolytes thiab cov ntawv khi. Kev ua kom zoo ntawm cov qauv ua raws cov qauv graphite siab, cov pa roj carbon monoxide siab thiab siab -kev ua tau zoo nrog cov peev txheej zoo dua. Composite txoj kev loj hlob sib xyaw ua ke graphite nrog cov ntaub ntawv ntxiv los txhawb lub zog ua haujlwm, ua haujlwm ntev thiab kev nyab xeeb tib lub sijhawm.
Rau cov tuam txhab, cov qauv no txhais ua nruj me ntsis ntawm purity, qhov loj me thiab qhov chaw saum npoo, vim tias cov cuab yeej ua haujlwm tau raug txwv los ntawm electrode-electrolyte interface es tsis yog los ntawm cov khoom siv ib leeg. Synthetic graphite yog tsim los ntawm graphitisation ntawm qhov kub siab tshaj 2,500 degree, thiab kev tswj ntawm cov txheej txheem yog dab tsi ua rau crystallinity zoo ib yam, tsis tshua muaj tshauv thiab rov ua dua hluav taws xob cwj pwm ua tau.
Yuav Ua Li Cas Xaiv Graphite rau Txoj Haujlwm Tshiab Zog
Kev xaiv pib los ntawm lub cuab yeej, tsis yog los ntawm cov ntaub ntawv cov ntaub ntawv. Lub roj teeb anode tau teev nyob ib ncig ntawm lub peev xwm thim rov qab thiab ua ntej - voj voog efficiency; ib lub phaj bipolar nyob ib ncig ntawm roj nruj, corrosion tam sim no thiab los ntawm - dav hlau conductivity; ib tug supercapacitor electrode nyob ib ncig ntawm qhov chaw, conductivity thiab tshauv cov ntsiab lus. Nyob rau hauv txhua rooj plaub, tus neeg yuav khoom yuav tsum pom zoo rau txoj kev sim nrog tus neeg muag khoom, tuav qhov tseem ceeb ntawm qhov kev tswj hwm, thiab txheeb xyuas lawv cov batch los ntawm batch.
Cov khoom lag luam graphite electrode rau lub cub tawg thiab cov txheej txheem siv tau ib txwm xa mus rau GB / T 3072, nrog qhov ntev thiab kev tsim qauv xa mus rau IEC 60239, thiab tib qhov kev qhuab qhia ntawm cov khoom tau hais tseg ntxiv rau kev kuaj xyuas siv rau cov qib tsim rau kev siv hluav taws xob.
Cov lus nug nquag
Q: Vim li cas graphite nyiam lithium -ion anode khoom?
Nws cov txheej txheem txheej tso cai rau kev nkag tau zoo thiab rho tawm ntawm lithium ions, muab lub peev xwm rov qab tau zoo, zoo lub voj voog ruaj khov thiab paub tab, tus nqi -cov khoom sib tw.
Q: Dab tsi ua rau graphite haum rau roj cell bipolar daim hlau?
Nws ua ke cov hluav taws xob conductivity nrog corrosion kuj nyob rau hauv acidic thiab ntub pawg ib puag ncig, thiab nws muaj peev xwm yuav molded los yog machined rau hauv daim hlau nrog integrated roj raws.
Q: Puas tuaj yeem siv graphite rau hydrogen cia?
Cov ntaub ntawv ntxeem tau carbon yog nquag tshawb fawb rau hydrogen adsorption. Lawv qhov chaw siab saum npoo thiab cov qauv pore muaj peev xwm ua tau zoo, txawm tias cov thev naus laus zis tseem tab tom tsim.
Q: graphite pab lub hnub ci li cas?
Cov pa roj carbon monoxide ua raws li cov hluav taws xob rov qab hauv cov hlwb perovskite thiab ua cov khoom hluav taws xob hauv cov xim dye-sensitised hlwb, muab cov conductivity thiab tshuaj stability ntawm tus nqi qis dua cov hlau muaj txiaj ntsig.
Q: Qhov twg yog graphite siv hauv cov khoom siv cua tshuab?
Conductive txhuam, plam-ntiv nplhaib tiv tauj thiab tam sim no hloov chaw cia siab rau graphite rau conductivity, hnav tsis kam thiab ua haujlwm ruaj khov hauv kev txav mus los.
Q: Yam khoom twg yuav tsum tau kho nyob rau hauv kev yuav khoom specification?
Particle size distribution, specific surface area, tap density, ash and sulfur content, moisture and electrical resistivity are the usual parameters, each tied to an agreed test method.