Graphite Paper, ade foforo a carbon-ba a egyina so, na ɛyɛ abɔde mu graphite anaasɛ pyrolytic graphite (hopg) a ɛkyerɛ kwan kɛse denam exfoliation ne pressing nhyehyɛe titiriw bi so. Ɛka anyinam ahoɔden a ɛkɔ so yiye, ɔhyew a ɛkɔ mu, ne nnuru a ɛma ɛyɛ den a ɛwɔ graphite mu ne krataa a ɛyɛ hare, ɛyɛ teateaa, ne sɛnea ɛyɛ mmerɛw sɛ ɛbɛdannan no bom. Ɛnyɛ sɛ n’adebɔ no yɛ nkɔso kɛse wɔ nneɛma ho nyansahu mu nko, na mmom ɛkyerɛ sɛnea wɔde di dwuma kɛse wɔ nnwuma te sɛ ahoɔden, ɛlɛtrɔnik, ne nneɛma a atwa yɛn ho ahyia mu, ɛma mfiridwuma mu nneɛma foforo a wɔyɛ ne nyansahu mu ntease a ɛkɔ akyiri.
1. Nyansahu mu nkɔso wɔ nhyehyɛe ne adwumayɛ mu: nhyehyɛe a wɔayɛ no pɛpɛɛpɛ fi micro kosi macro .
Nyansahu mu ntease a ɛwɔ graphite krataa mu no da adi titiriw wɔ ne nkitahodi soronko a ɛda microstructure ne macroscopic su ahorow ntam no mu. Graphite nneɛma a wɔde di dwuma wɔ amanne kwan so no mu dodow no ara yɛ nea ɛdɔɔso anaasɛ ɛyɛ powder, na ɛma ɛyɛ den sɛ wɔde bedi dwuma tẽẽ wɔ nneɛma a ɛho hia sɛ ɛyɛ hare na ɛyɛ mmerɛw mu. Nanso, ɛdenam graphite microsheets a ɛwɔ ntam no a wɔhwɛ so no so (a mpɛn pii no ɛkora nhyehyɛe a ɛwɔ sp2 hybridized carbon layers bi so no so) no, graphite krataa no nya cross-scale construction fi abien-dimensional nanosheets so kɔ macroscopic optidium so. Ne kɛseɛ a ɛyɛ ne kɛseɛ no yɛ 0.05-1mm pɛ, na ne density bɛyɛ 2.1-2.3G/cm3 (a ɛbɛn graphite no nsusuiɛ denden). Nanso, ɛhoahoa ne ho sɛ ɛwɔ { 15}}plane thermal conductivity of 1000-3000 w/(m·k) (a wɔde toto graphene a ɛwɔ ntoatoaso biako ho), anyinam ahoɔden a ɛkɔ so no yɛ 105-10⁶ S/m (ɛkame ayɛ sɛ ɛko tia 800, ne nnuru a ɛma obi ho yɛ den a ɛyɛ papa (acid ne Alkali). Saa nkabom a emu yɛ hare, ɛma ahoɔden a ɛkɔ soro, na ɛyɛ den no di atetesɛm mu nneɛma a wɔde di gua a ɛwɔ hɔ no so nkonim, na ɛma wonya nneɛma titiriw fapem a wɔde bedi ɔhyew sohwɛ ho nsɛnnennen a ɛwɔ ahoɔden a wɔde fa mu no ho dwuma ne hia a ehia sɛ wɔde anyinam ahoɔden a ɛyɛ mmerɛw di dwuma wɔ ɛlɛtrɔnik mfiri ahorow mu.
2. Nneɛma foforo a wɔyɛ wɔ ahoɔden ho adwuma mu: Ɔhyew a wɔde di dwuma ne ahoɔden a wɔkora so yiye a wɔbɛma atu mpɔn .
Wɔ nkɔso a ɛrekɔ so ntɛmntɛm wɔ ahoɔden mfiridwuma mu no akyi no, graphite krataa no bo titiriw no da adi titiriw wɔ ɔhyew ho nhyehyɛe mu. Ɛnam sɛ wɔagye nneɛma a ɛkorɔn-power density (te sɛ 5G base station chips ne ahoɔden kar batere foforo) atom kɛse nti, adwumayɛ a ɛrekɔ fam ne ahobammɔ ho nsɛm a ɛba mpo a ɛnam mpɔtam hɔ ɔhyew a ɛboro so so aba no abɛyɛ ade titiriw a ɛma nneɛma kɔ so yiye. Graphite krataa, a ne ultra-akɔ soro-plane thermal conductivity no, yɛ ɔhyew no yiye wɔ ɔkwan a wɔde asi n’ani so so (sɛ nhwɛso no, thermal conductivity a ɛwɔ ɔkwan a ɛne interlayer no hyia no so no yɛ bɛyɛ 10 W/(m·k), bere a ebetumi adu mpem pii wɔ in{7}}plane akwankyerɛ no mu). Eyi ma wɔde di dwuma kɛse wɔ battery thermal diffusion layers (te sɛ graphite heat dissipation film a ɛwɔ Tesla 4680 battery mu) ne sɛ ɔhyew a wɔsɛe no substrates ma LED chips. Nhwehwɛmu data kyerɛ sɛ sɛ wode graphite paper buffer layer ka lithium battery modules ho a, ebetumi atew ɔhyew a ɛsen biara bere a ɛrebɔ ne nea ɛrefi mu no so 15-20℃na atrɛw kyinhyia no nkwa nna mu bɛboro 30%.
Graphite krataa nso di dwuma titiriw wɔ mfiri a wɔde siesie ahoɔden mu. Sɛ́ electrode ade a ɛyɛ mmerɛw ma supercapacitors no, ne conductivity a ɛkɔ soro no ma interfacial resistance so tew (ɛboro 50% a ɛba fam sen atetesɛm activated carbon electrodes). Ne layered structure no ma fast two-dimensional diffusion pathways ma ions (te sɛ Li- ne na9), a ɛma afiri no tumi kura bɛboro 90% wɔ ne mfiase capacitance mpo bere a bent. Nea ɛho hia kɛse no, graphite krataa betumi ayɛ ade a ɛboa ma ɛyɛ den-State electrolyte membranes. Surface functionalization (te sɛ sulfonic acid akuw a wɔde ba) betumi ama lithium ions a ɛwɔ lithium dade batere mu no ayɛ pɛ, asiw dendrite nyin, na ɛnam so ama batere no ahobammɔ atu mpɔn.
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Esiane sɛ ɛlɛtrɔnik mfiri a ɛyɛ mmerɛw (te sɛ sensor ahorow a wɔhyɛ ne screen touchscreens a wotumi bobɔw) reyɛ ntɛmntɛm nti, atetesɛm mu nneɛma a ɛma nsu yɛ adwuma a ɛyɛ den (te sɛ dade sini ne indium tin oxide (ITO)) ntumi nni saa ahwehwɛde ahorow yi ho dwuma esiane sɛ ɛyɛ mmerɛw na ɛnyɛ nea ɛyɛ mmerɛw nti. Graphite Paper’s dual properties of flexibility and conductivity ma ɛyɛ ɔkwan pa a wɔfa so yɛ adwuma: ebetumi agyina bends bɛboro 10-o ano (a curvature radius a ennu 1mm) a enni conductivity a ɛyera, na wobetumi ayɛ no sɛnea ɛte biara denam machining a ɛnyɛ den so (te sɛ twitwa ne punching). Sɛ nhwɛso no, wɔ strain sensor ahorow a ɛyɛ mmerɛw mu no, wɔde graphite krataa no ne elastic polymers afrafra, na ɛde ne nkate no di dwuma wɔ nsakrae a ɛba anyinam ahoɔden a ɛko tia mu no mu denam nhyɛso (a ɛwɔ nkate mu nsusuwii (GF) a ɛyɛ 5–10), a ɛma wotumi yɛ kɛse-precision monitoring of minute deformations (te sɛ nnipa ntini ne nkwaa ne nkwaa a ɛkɔ nipadua no mu). Wɔ ɛlɛtrɔnik honam ani hwɛbea mu no, graphite krataa-gyinaso sensor ahorow no tumi yɛ adwuma pintinn wɔ ɔhyew a ɛtrɛw a ɛyɛ -20℃kosi 150℃, de mfiridwuma mu mmoa titiriw ma wɔ nsa a wɔde ka wɔn ho wɔ biomimetic robɔt mu.
4. Mfaso a ebetumi aba wɔ nneɛma a atwa yɛn ho ahyia ne nyansahu a ɛtra hɔ daa mu .
Nyansahu mu ntease a ɛwɔ graphite krataa mu no nso trɛw kɔ nneɛma a atwa yɛn ho ahyia ho banbɔ mu. Nea wɔde yɛ no, graphite, yɛ carbon ade pii a ɛwɔ Asase no abon mu (wiase nyinaa abɔde mu graphite a wɔakora so boro tɔn ɔpepem 300). Bio nso, ɔkwan a wɔfa so yɛ no ma wotumi san de graphite electrode ahorow a wɔsɛe no (te sɛ nea efi dade a wɔde yɛ mu) di dwuma bio, na wonya nneɛma a wɔde di dwuma bio, a ɛne nnyinasosɛm ahorow a ɛfa green chemistry ho no hyia. Bio nso, graphite krataa no porous structure (ne porosity betumi ayɛ nsakrae denam controlled oxidation-reduction process) ma ɛyɛ yiye sɛ ɛda adsorption adwumayɛ a ɛkyɛn so adi ma efĩ te sɛ heavy metal ions ne organic dyes. Nsɔhwɛ ahorow ada no adi sɛ amino-a ɛyɛ adwuma wɔ graphite krataa so betumi anya adsorption tumi a ɛyɛ 280 mg/g ama PB2⁺, a ɛboro carbon a wɔayɛ no adwuma no de so kɛse (bɛyɛ 100 mg/g). Wɔ bere tenten mu no, sɛ́ carbon-dwumadi nneɛma a egyina ananmusifo so no, Graphite Paper de nneɛma ho nhyehyɛe foforo ma "carbon-To-carbon" mfiridwuma (te sɛ carbon dioxide adsorption ne nsakrae) a wɔde asi wɔn ani so sɛ wobenya carbon neutrality.
Nyansahu mu ntease a ɛwɔ graphite krataa mu no nyɛ ne dwumadi a ɛyɛ nwonwa no nko na mmom ne dwumadi sɛ "bridge material," a ɛde nhwehwɛmu atitiriw ne mfiridwuma mu nneɛma a wɔde di dwuma no ba awiei: efi nneɛma a wɔde yɛ nneɛma abien-afã horow a wɔboaboa ano no a wɔda no adi wɔ microscale so kosi ahoɔden, ɛlɛtrɔnik, ne nneɛma a atwa yɛn ho ahyia ho mfiridwuma ho nimdeɛ so wɔ macroscale no so. Ɛnam ahosiesie akwan a ɛyɛ papa (te sɛ direct growth of large-beae graphite paper a wɔde nnuru a ɛyɛ hyew a ɛkɔ fam (CVD) di dwuma) ne nkɔso foforo wɔ dwumadi nhyehyɛe mu (te sɛ ɛlɛtrɔnik nhyehyɛe a wɔsakra no denam doping a wɔde di dwuma wɔ nitrogen anaa boron atom ahorow mu) no, wɔhwɛ kwan sɛ graphite krataa bɛkɔ so atrɛw nea wɔde di dwuma no ahye mu na abɛyɛ nnwuma atitiriw a wɔde gyina so no mu biako a wɔde boa adwuma no.
