Graphene layer te chu a chungah an inzawm khawm chuan graphite an siam thin. Graphite millimeter khatah hian graphene layer maktaduai 3 vel a awm a. Paper-a pencil light stroke chuan trace a hnutchhiah a, chu chu layer tlemte chauh emaw, graphene layer khat emaw pawh ni thei a ni. Two-dimensional structure ṭha tak a neih avangin thil thar tam takah functional additive angin a thawk a ni.
Graphene chungchang sawi dawn chuan sawi lar ber chu rinhlelh rual lohvin kum 2010-a Nobel Prize in Physics a ni a, scientist pahnih chuan graphene chungchanga groundbreaking research an neih avangin an insem a ni. Tun hnaiah Fudan University chuan an zirchiangtute chuan National University of Singapore atanga lo kalte nen tangkawpin graphene siam dan thar, high{3}}efficiency graphene siam dan an siam tih an puang a, a core technology chu awlsam takin industrial production atan a scale up theih a ni.
Hriat tur pawimawh tak chu research team hian paper tihchhuah hmasak a, chuta tang chuan enterprise te nena thawhhona tha tak neih thin dan kalphung nen a inkalh tak zet a ni. Kum 2013 khan result thar an nei a, kum 2014 khan patent an file a, kum 2015 khan patent hi domestic enterprise-ah an transfer a, an thil hmuhchhuahte chu online-ah inNature Communications chungchangon January 8. Fudan University-a Department of Macromolecular Science leh State Key Laboratory of Molecular Engineering of Polymers-a team hruaitu zinga mi Lu Hongbin chuan nui chungin, "Thil ṭha hi nghah tlak a ni; hun engemaw chen hnuah a puitlin hnuah a ṭha zawk fo ṭhin," a ti.
Atomic‐resolution transmission electron microscopy image (a), Raman spectrum (b), X‐ray photoelectron spectroscopy spectrum (c), leh large‐scale atomic force microscopy image (d) hmanga siam chhuah graphene te graphene thickness distribution (e) leh lateral size statistics (f) te plot te a ni.
Thlalak hi Dong Lei kutchhuak a ni
Mi tlemte chauhvin graphene hi Nobel Prize list-a hming mai a ni lo - nitin nunah a inzawm tlat tawh tih an hre chiang hle. Khawvelah hian a pianphungah a awm a, mahse single-layer graphene isolated chu thil awlsam a ni lo. Layer khat hnu layer khata stacked graphene hian graphite a siam a, graphite millimeter 1-ah graphene layer maktaduai 3 vel a awm a ni. Paper-a pencil chhinchhiahna chu graphene layer engemaw zat emaw, layer khat chauh emaw pawh a ni thei. 2D structure tha tak a neih avangin thil thar chi hrang hrangah functional additive angin a thawk a:
· Special polymer coatings-a dah belh a nih chuan, barrier property ṭha tak tak hmangin service life a ti rei a;
· Battery-a conductive agent atana hman a nih avangin a 2D structure hian electron transport chak zawk a siam a, charging speed nasa takin a ti sang a;
· Fiber leh electric heating device-a dah tel a nih avangin a electrical leh thermal conductivity danglam tak hian product performance nasa takin a tisang a ni.
A hlutna nasa tak ngaihtuah chuan inbuatsaihna tha zawk chu zirna leh industry tan pawh inelna thil tum a lo ni ta a ni. University of Manchester-a scientist pahnih - Andre Geim leh Konstantin Novoselov - te chuan graphite flakes te tak te zual zel hmuh theihna kawng awlsam tak mak tak mai an hmuchhuak a. Highly oriented pyrolytic graphite atanga flakes te chu an phelh a, a sir lehlamah special adhesive tape-ah an dah a, tape chu an phelh a, flakes te chu an thenfai bawk. Chutianga tih leh chuan sheet te zawk leh thim zawk a siam a, a tawpah chuan carbon atom layer pakhat chauh atanga siam flake a lo awm ta a ni: graphene. Chumi hnuah chuan inbuatsaihna thar tam tak a lo chhuak a, kum nga chhunga siam chhuah a nih hnuah industrial-scale-a graphene siamchhuahna chu a thlen theih phah ta a ni.
Professor Lu Hongbin chuan graphene hi "khawvela tha ber" tih thupui pathum a pe a:
· Material hriat lar ber, 0.335 nanometers chauh a thuk;
· Thil chak ber, thir aiin a let 100-a chak zawk;
·Thermal conductor tha ber, silver aiin a let 10 aia sang.
Hei bakah hian graphene hian electron mobility sang tak a nei a, silicon aiin order hnih zetin a sang zawk bawk. Strategic emerging material pawimawh tak a nih angin he novel 2D material hian smart equipment, aerospace, energy storage, environmental remediation, leh thil dang tam takah hman theihna nasa tak a nei a ni.
Mahse, graphene quality sang -scale-a efficient, large-scale siam chhuah theihna chu hun rei tak chhung chu a hmanna zau tak khaptu key bottleneck a ni.
Graphene hi a pianphungah a awm a, a buatsaih dan tha ber chu natural flake graphite chu liquid solvent bik pakhatah graphene-ah exfoliate a ni. Phên dangin sawi ila, graphene hi hydrophobic a nih avangin exfoliation laiin liquid-ah surfactant tam tak dah a ngai a, chuti lo chuan inthen theih a ni lo tluk a ni. Thil tih dan pangngaiah chuan graphene ton 1 siam chhuah nan potassium permanganate ang chi oxidant ton 3 a ngai tlangpui a, chu chu exfoliation leh reduction hmain graphene oxide-ah a chantir thin. Hetiang hian oxidation, reduction leh cleaning atanga tui bawlhhlawh tam tak a siam chhuak a, chutih rualin graphene thil danglam bik thenkhat pawh a tichhe bawk.
Engtin nge research team hian heng harsatnate hi an hneh theih?Anni chuan unstable dispersion strategy an hmang a, graphene surface-ah ionizable oxygen-containing functional groups tlemte tak tak an dah a, ultra-high concentration-ah rapid, high{1}}yield exfoliation an siam thei a ni. Exfoliated product 90% aia tam chu single-layer graphene a ni a, lattice defects tlemte chauh a awm a, hei hian large-scale application atan storage leh transportation issues te chu a hlawhtling takin a chinfel sak a ni. Chubakah, he method hmanga siam aqueous graphene slurry hian rheological property tha tak a nei a, direct-in graphene aerogels chi hrang hrang 3D-print-na atan hman theih a ni a, hei hian energy storage, environmental treatment, multifunctional composites, leh a chhehvela graphene hmanna tur kawng thar a hawng thei a ni.
