Expanded graphite yog ib hom xoob thiab ntxeem tau zoo li cov khoom siv tau los ntawm ntuj flake graphite los ntawm intercalation, ntxuav, ziab thiab kub-kub expansion. Nws yog ib qho xoob thiab ntxeem tau granular tshiab cov khoom siv carbon. Vim yog qhov ntxig ntawm tus neeg sawv cev intercalation, graphite lub cev muaj cov yam ntxwv ntawm kev ua haujlwm kub thiab hluav taws xob, thiab siv dav hauv kev sib khi, kev tiv thaiv ib puag ncig, nplaim hluav taws thiab cov khoom siv hluav taws xob thiab lwm yam. Cov nram qab no editor ntawm Furuite Graphite qhia cov qauv thiab nto morphology ntawm nthuav graphite:
Nyob rau hauv xyoo tas los no, tib neeg tau them nyiaj ntau dua rau ib puag ncig kev ua qias tuaj, thiab cov khoom siv graphite npaj los ntawm cov txheej txheem electrochemical muaj qhov zoo ntawm cov pa phem me me, cov ntsiab lus tsis muaj leej faj thiab tus nqi qis. Yog tias cov electrolyte tsis muaj kuab paug, nws tuaj yeem rov qab siv tau, yog li nws tau nyiam ntau yam. Kev sib xyaw ntawm phosphoric acid thiab sulfuric acid tau siv los ua electrolyte kom txo cov concentration ntawm cov kua qaub, thiab ntxiv ntawm phosphoric acid kuj nce oxidation tsis kam ntawm nthuav graphite. Kev npaj nthuav dav graphite muaj cov nplaim hluav taws zoo thaum siv los ua thermal rwb thaiv tsev thiab cov khoom siv hluav taws xob.
Lub micro-morphology ntawm flake graphite, expandable graphite thiab nthuav graphite tau kuaj thiab soj ntsuam los ntawm SEM. Nyob rau hauv qhov kub thiab txias, cov interlayer tebchaw nyob rau hauv lub expandable graphite yuav decompose los tsim gaseous tshuaj, thiab cov roj expansion yuav ua rau ib tug muaj zog tsav quab yuam kom nthuav cov graphite raws li cov kev taw qhia ntawm lub C axis los tsim cov expansion graphite nyob rau hauv ib tug worm zoo. Yog li ntawd, vim qhov nthuav dav, thaj chaw tshwj xeeb ntawm cov graphite nthuav dav tau nce, muaj ntau lub cev zoo li qhov pores ntawm lamellae, cov qauv lamellar tseem tshuav, van der Waals quab yuam ntawm cov khaubncaws sab nraud povtseg, intercalation compounds yog tag nrho. nthuav dav, thiab qhov sib nrug ntawm cov graphite txheej yog nce.
Post lub sij hawm: Mar-10-2023